{"id":6088,"date":"2026-05-18T16:12:19","date_gmt":"2026-05-18T16:12:19","guid":{"rendered":"https:\/\/www.simplywise.com\/blog\/?p=6088"},"modified":"2026-05-18T16:12:19","modified_gmt":"2026-05-18T16:12:19","slug":"how-to-estimate-roofing-job","status":"publish","type":"post","link":"https:\/\/www.simplywise.com\/blog\/how-to-estimate-roofing-job\/","title":{"rendered":"How to Estimate a Roofing Job: Contractor Guide 2026"},"content":{"rendered":"<p><script>\ndocument.addEventListener('DOMContentLoaded', function() {\n  var sels = ['.entry-header','.page-header','article > h1:first-child','.entry-footer'];\n  sels.forEach(function(s){document.querySelectorAll(s).forEach(function(el){el.style.display='none';});});\n  var el = document.querySelector('.sw-a');\n  while (el && el !== document.body) {\n    el.style.maxWidth='100%'; el.style.width='100%'; el.style.padding='0'; el.style.margin='0';\n    el.style.float='none'; el.style.flex='0 0 100%';\n    el = el.parentElement;\n  }\n  document.body.style.marginTop='0'; document.body.style.paddingTop='0';\n});\n<\/script>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800&#038;display=swap\" rel=\"stylesheet\">\n<!-- 02 Article Template. 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*\/\n.sw-a__eyebrow,.sw-l__eyebrow,.eyebrow{color:#1d4ed8!important;}\n<\/style>\n<p><script>\n(function(){\n  try{\n    var b=document.body;\n    if(b && b.classList){b.classList.add('single-post');}\n  }catch(e){}\n})();\n<\/script><\/p>\n<article class=\"sw-a\">\n<section class=\"sw-a__hero\">\n<div class=\"sw-a__inner\">\n<p class=\"sw-a__breadcrumb\">Blog &nbsp;&rsaquo;&nbsp; Estimating Guides<\/p>\n<p>    <span class=\"sw-a__eyebrow\">Roofing &middot; Estimating Guide<\/span><\/p>\n<h1>How to Estimate a Roofing Job: Contractor Guide 2026<\/h1>\n<p class=\"sw-a__subtitle\">A step-by-step roofing estimate workflow used by professional contractors. Sourced from the National Roofing Contractors Association, OSHA, IBHS FORTIFIED, and the Bureau of Labor Statistics.<\/p>\n<div class=\"sw-a__meta\">\n      <span>SimplyWise<\/span><br \/>\n      <span class=\"sw-a__dot\"><\/span><br \/>\n      <span>Updated May 4, 2026<\/span><br \/>\n      <span class=\"sw-a__dot\"><\/span><br \/>\n      <span>18 min read<\/span>\n    <\/div>\n<figure class=\"sw-a__hero-figure\">\n      <img decoding=\"async\" src=\"https:\/\/images.unsplash.com\/photo-1635424709870-cdc6e64f0e20?w=1400&#038;h=700&#038;fit=crop&#038;q=80&#038;auto=format\" alt=\"Roofing contractor estimating a residential asphalt shingle roof from a ladder\" loading=\"eager\"><br \/>\n    <\/figure>\n<\/p><\/div>\n<\/section>\n<section class=\"sw-a__tldr\">\n<div class=\"sw-a__tldr-box\">\n<div class=\"sw-a__tldr-label\">Roofing estimate workflow at a glance<\/div>\n<div class=\"sw-a__tldr-body\">\n<ol>\n<li>Measure the roof in squares (1 square = 100 sq ft) using a satellite report, drone, or on-roof tape.<\/li>\n<li>Adjust for pitch (4\/12 vs 8\/12 vs 12\/12 changes labor materially) and complexity (hips, valleys, dormers).<\/li>\n<li>Pick the material (asphalt 3-tab, architectural, metal, cedar, slate) and price the bundle plus accessories.<\/li>\n<li>Price tear-off and disposal separately (squares of removal, dumpster, magnet sweep).<\/li>\n<li>Calculate labor using crew composition, hours per square, and a burdened roofer wage.<\/li>\n<li>Add the items contractors miss: flashing, skylights, fascia, ridge vent, rotted decking allowance.<\/li>\n<li>Apply 15 to 25 percent gross margin, sales tax, and permit fees to land at the customer-facing price.<\/li>\n<li>Build the estimate document with itemized line items, manufacturer warranty info, and payment terms.<\/li>\n<\/ol><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"sw-a__body\">\n<div class=\"sw-a__inner\">\n<h2>What this how to estimate a roofing job guide covers<\/h2>\n<p>Learning <strong>how to estimate a roofing job<\/strong> the way professional contractors estimate it is the difference between a 20 percent gross margin and a 0 percent margin on residential reroofs. This 2026 guide walks through how to estimate a roofing job step by step, from measuring the roof in squares to applying markup and writing the customer-facing scope. Furthermore, every range, percentage, and technical claim below traces to a named primary source: the <a href=\"https:\/\/www.nrca.net\/\" target=\"_blank\" rel=\"noopener\">National Roofing Contractors Association (NRCA)<\/a>, <a href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1926\/1926.501\" target=\"_blank\" rel=\"noopener\">OSHA 29 CFR 1926.501<\/a>, the <a href=\"https:\/\/ibhs.org\/fortified\/fortified-roof\/\" target=\"_blank\" rel=\"noopener\">Insurance Institute for Business &amp; Home Safety FORTIFIED Roof program<\/a>, and the <a href=\"https:\/\/www.bls.gov\/ooh\/construction-and-extraction\/roofers.htm\" target=\"_blank\" rel=\"noopener\">Bureau of Labor Statistics Occupational Outlook Handbook<\/a> entry for roofers. As a result, you can verify any claim before you put it in front of a homeowner.<\/p>\n<p>In short, a clean roofing estimate has eight elements: an accurate square count, a pitch and complexity adjustment, a sourced material bundle, a tear-off and disposal price, a labor calculation that respects fall-protection setup time, a list of the add-ons most contractors forget, a markup that holds margin, and a written document the homeowner can sign. SimplyWise built this how to estimate a roofing job guide for residential roofers and general contractors who run roof work in-house. Therefore, the steps below assume single-family residential reroofs from 15 to 40 squares as the default scope. New construction, commercial low-slope, and large multifamily follow similar structure but use different productivity benchmarks and overhead rules. The framework is the same.<\/p>\n<h2>Why most roofing estimates fail<\/h2>\n<p>Most roofing estimates fail for one of four reasons: under-measurement of the roof, missed accessory layers (drip edge, ice and water shield, ridge vent), labor underestimation on cut-up roofs (hips, valleys, dormers), or skipping the on-roof inspection that surfaces hidden flashing failures and rotted decking. As a result, the estimate looks competitive on paper but loses money once the crew is on site. Understanding how to estimate a roofing job means understanding the failure modes first. Each of these failures has a defense built into the workflow below.<\/p>\n<h3>Under-measurement of squares<\/h3>\n<p>The most common failure mode is measuring the roof footprint instead of the roof surface. Specifically, a 1,500 square foot footprint with an 8\/12 pitch is not 15 squares of roofing material. The pitch multiplier (about 1.20 at 8\/12) pushes the actual surface above 18 squares before any waste factor. Consequently, contractors who measure from the satellite footprint without applying the pitch multiplier come up short on shingles, underlayment, and labor hours. The fix is to use a measurement service that reports actual roof surface area (EagleView, RoofSnap, Hover) or to apply the pitch multiplier manually when measuring from a footprint.<\/p>\n<h3>Forgetting accessory layers<\/h3>\n<p>Drip edge, ice and water shield (in cold-climate jurisdictions or by code), starter strip, ridge vent, and ridge cap are not optional. However, they are easy to omit from a quick estimate because they are not the dominant material cost. Together they can represent 15 to 25 percent of the material bill on a typical reroof. Therefore, omitting them on the quote means the contractor either eats the cost or has an awkward change-order conversation with the homeowner. The fix is a standard accessory checklist that runs on every estimate before the price prints.<\/p>\n<h3>Underestimating labor on cut-up roofs<\/h3>\n<p>A simple gable roof with two planes installs at very different productivity than a cut-up hip roof with three dormers, two valleys, and a chimney saddle. Specifically, the NRCA Roofing Manual notes that complex hip-and-valley roofs increase installation labor materially over simple gables of the same square count. As a result, contractors who use a flat hours-per-square figure across all jobs lose money on the complex ones and over-quote the simple ones. The fix is a complexity multiplier applied to the base labor figure based on hip, valley, and dormer count.<\/p>\n<h3>Skipping the on-roof inspection<\/h3>\n<p>The cleanest tear-off in the world cannot fix a deck that has been wet for ten years. Estimating a roofing job from a satellite report alone misses rotted plywood, soft sheathing around chimney bases, failed step flashing on sidewalls, and inadequate attic ventilation. Each of those is a per-event cost that has to land on the estimate as either a line item or an explicit allowance. Furthermore, skipping the on-roof inspection also skips the opportunity to discover storm-damage indicators that change the funding source from homeowner to insurance carrier. Therefore, every estimate above a certain price floor (usually anything north of a small repair) should include a physical inspection.<\/p>\n<h2>Step 1: Measure the roof in squares<\/h2>\n<p>Every roofing estimate starts with an accurate square count. A <strong>roofing square<\/strong> is a unit of roof surface area equal to <strong>100 square feet<\/strong> (a 10 foot by 10 foot patch). Material packaging, labor productivity benchmarks, and disposal pricing all run on squares as the base unit. Therefore, a clean square count is the single most important number on the estimate. Three measurement paths produce defensible numbers in 2026: a satellite or aerial measurement report, a drone flyover, or an on-roof manual measurement with a tape and a pitch gauge. Each has trade-offs in cost, time, and accuracy. Pick one as your default and use the others as cross-checks on complex jobs.<\/p>\n<h3>What is a roofing square<\/h3>\n<p>One roofing square equals 100 square feet of roof surface. Furthermore, asphalt shingle bundles are sold in fractions of a square. Specifically, three bundles of standard architectural shingles cover one square. As a result, every line item on the materials side ladders up from this base unit. Underlayment is sold in 4-square or 10-square rolls. Ice and water shield is sold by linear feet at a known coverage. Ridge vent runs in linear feet. As a result, the square count drives all of the secondary math. Get it wrong and every downstream number is wrong by the same percentage.<\/p>\n<h3>Three ways to measure<\/h3>\n<p>The fastest path is a third-party aerial measurement report. <a href=\"https:\/\/www.eagleview.com\/\" target=\"_blank\" rel=\"noopener\">EagleView<\/a> uses 1-inch GSD aerial imagery (which EagleView describes as 140 times higher resolution than satellite) to produce roof reports with squares, pitch, hip and valley linear footage, ridge length, eaves, and rakes. RoofSnap and Hover offer similar products. Reports typically arrive within hours and run between $13 and $35 per report depending on tier. Therefore, the report becomes the official measurement of record, attached to the estimate file.<\/p>\n<p>The second path is a drone flyover. Specifically, a small consumer drone with a downward camera captures imagery the contractor processes through a photogrammetry app. As a result, drones make sense for high-volume operations that want first-party measurement and want to inspect the roof condition simultaneously. However, drone operations require Part 107 certification for commercial use under FAA rules. As a result, most small contractors stick with subscription aerial reports and skip the drone overhead.<\/p>\n<p>The third path is on-roof manual measurement. Specifically, the contractor climbs the roof with a 100 foot tape, a pitch gauge, and a notepad. As a result, the manual path is the slowest but it is also the cheapest and it forces the contractor to do the on-roof inspection at the same time as the measurement. The trade-off is time. A simple gable roof takes 20 minutes. A cut-up hip roof can take 90 minutes. Therefore, on-roof measurement is the right path for jobs that already require an inspection visit anyway.<\/p>\n<h3>Apply a waste factor<\/h3>\n<p>The square count from any measurement method is the surface area. However, the order quantity must include a waste factor for cuts, hip and ridge cap, starter strip, and breakage. The standard waste factor on simple gable roofs is <strong>10 to 12 percent<\/strong>. Furthermore, complex hip-and-valley roofs use <strong>15 to 20 percent<\/strong>. As a result, a 25-square measured roof on a complex hip layout orders at 28.75 to 30 squares of material. The waste factor is also where contractors recoup the cost of starter strip and ridge cap, which are cut from full shingles in many installation systems.<\/p>\n<h2>Step 2: Adjust for pitch and complexity<\/h2>\n<p>The same 25-square roof installs at very different speeds depending on pitch and complexity. Specifically, a 4\/12 walkable roof installs roughly 30 to 40 percent faster than a 12\/12 steep roof of the same square count. Furthermore, a simple two-plane gable installs faster than a hip roof with the same square count and the same pitch because the hip roof has more cuts, more flashing penetrations, and more ridge cap. Therefore, the labor portion of the estimate has to apply both a pitch multiplier and a complexity multiplier on top of the base hours-per-square figure. This step is where most contractors learning how to estimate a roofing job lose money on cut-up jobs.<\/p>\n<h3>Reading roof pitch<\/h3>\n<p>Roof pitch is expressed as rise over run in 12-inch units. Specifically, a 4\/12 pitch rises 4 inches for every 12 inches of horizontal run. As a result, the steeper the pitch, the larger the actual roof surface for a given footprint and the slower the installation. Common residential pitches break into three working categories: <strong>walkable<\/strong> (3\/12 to 6\/12), <strong>steep<\/strong> (7\/12 to 9\/12), and <strong>very steep<\/strong> (10\/12 and above, where staging and roof jacks become mandatory).<\/p>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Pitch<\/th>\n<th scope=\"col\">Surface multiplier<\/th>\n<th scope=\"col\">Labor productivity<\/th>\n<th scope=\"col\">Equipment notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2\/12 to 3\/12<\/td>\n<td>~1.03<\/td>\n<td>Slowest in this group only because of underlayment requirements (low-slope rules apply)<\/td>\n<td>Self-adhered underlayment often required by code<\/td>\n<\/tr>\n<tr>\n<td>4\/12<\/td>\n<td>1.05<\/td>\n<td>Walkable, fastest installation<\/td>\n<td>No roof jacks needed<\/td>\n<\/tr>\n<tr>\n<td>6\/12<\/td>\n<td>1.12<\/td>\n<td>Walkable with care<\/td>\n<td>Roof jacks recommended on long runs<\/td>\n<\/tr>\n<tr>\n<td>8\/12<\/td>\n<td>1.20<\/td>\n<td>Roof jacks required<\/td>\n<td>OSHA 1926.501(b)(11) steep-roof fall protection rules apply<\/td>\n<\/tr>\n<tr>\n<td>10\/12<\/td>\n<td>1.30<\/td>\n<td>Significantly slower<\/td>\n<td>Roof jacks plus PFAS or guardrails<\/td>\n<\/tr>\n<tr>\n<td>12\/12 and above<\/td>\n<td>1.42 and up<\/td>\n<td>Slowest, most expensive<\/td>\n<td>Full staging often required<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The surface multiplier converts the roof footprint to actual roof surface. Specifically, a 1,500 square foot footprint at 8\/12 yields 1,800 square feet (18 squares) of roof surface. Therefore, the multiplier matters before any waste factor. The labor productivity column is qualitative because <a href=\"https:\/\/www.nrca.net\/\" target=\"_blank\" rel=\"noopener\">NRCA<\/a> productivity benchmarks vary by crew, region, and material. As a result, every contractor should track their own productivity data over time to refine these defaults.<\/p>\n<h3>Hips, valleys, dormers, chimneys<\/h3>\n<p>Pitch is half the labor story. The other half is roof complexity. Specifically, every hip and ridge requires hip-and-ridge cap shingles cut from full shingles. Every valley requires either a closed-cut valley with extra material and care, or an open metal W-valley with metal flashing. Furthermore, every dormer requires its own flashing system at sidewall, head, and apron. As a result, complexity dominates labor cost on cut-up roofs. Skylights, plumbing vents, and chimney chases each carry a per-penetration labor allowance because flashing is the slowest part of any roof installation.<\/p>\n<p>A practical complexity multiplier looks like: simple gable (1.0x), gable with a few penetrations (1.05x), simple hip roof (1.10x), hip with one or two dormers (1.15x to 1.25x), and complex hip with multiple valleys, dormers, and a chimney (1.30x or higher). Therefore, a contractor who books a complex hip job at simple-gable productivity is leaking 30 percent of the labor cost back into the bid.<\/p>\n<h2>Step 3: Choose roofing material and price the bundle<\/h2>\n<p>Material selection drives both the price the homeowner sees and the warranty the homeowner receives. The dominant residential roofing categories in 2026 are <strong>asphalt 3-tab<\/strong>, <strong>asphalt architectural (laminated)<\/strong>, <strong>designer or premium asphalt<\/strong>, <strong>standing-seam metal<\/strong>, <strong>exposed-fastener metal<\/strong>, <strong>cedar shake or shingle<\/strong>, <strong>slate<\/strong>, and <strong>synthetic composite<\/strong> (synthetic slate, synthetic cedar, polymer composite). Each category has its own price band, installation labor profile, and warranty structure. Knowing how to estimate a roofing job means knowing the spec sheet for the categories you actually install.<\/p>\n<h3>Asphalt 3-tab vs architectural vs designer<\/h3>\n<p>Asphalt shingles are the dominant residential roof covering in the United States. Furthermore, the category breaks into three tiers. <strong>3-tab<\/strong> shingles are the legacy budget product with a flat, single-layer profile and a shorter wind warranty. As a result, 3-tab use has fallen as the architectural product became affordable. <strong>Architectural<\/strong> (also called dimensional or laminated) shingles are the dominant 2026 product. Specifically, architectural shingles use a laminated two-layer construction with a heavier weight and a longer wind warranty. Major manufacturers (<a href=\"https:\/\/www.gaf.com\/\" target=\"_blank\" rel=\"noopener\">GAF<\/a>, Owens Corning, CertainTeed) all sell architectural lines as their core product. <strong>Designer<\/strong> shingles are the premium tier with shaped profiles, heavier weights, and the longest wind warranties.<\/p>\n<h3>Standing-seam and exposed-fastener metal<\/h3>\n<p>Metal roofing has grown as a premium residential category. Specifically, <strong>standing-seam<\/strong> metal uses concealed clips and raised seams between panels, which gives the longest service life and the cleanest appearance. As a result, standing-seam is the metal choice on most premium residential reroofs. <strong>Exposed-fastener<\/strong> metal (often called R-panel or Pro-Panel) is the budget metal choice. Furthermore, exposed-fastener panels install faster but carry more long-term maintenance because the fasteners eventually need replacement. Both categories install at substantially higher material cost than asphalt but carry longer service lives.<\/p>\n<h3>Cedar shake, slate, and synthetic<\/h3>\n<p>Cedar shake, real slate, and synthetic composite roofs are premium products with installation labor profiles very different from asphalt. Specifically, cedar shake requires craft-skill installation from installers who have done the product before. Real slate is heavy enough that the structure may need engineering review before reroofing in slate. As a result, synthetic composite has grown as a substitute that mimics slate or shake aesthetics without the structural and installation complications. Each premium category has a labor multiplier that has to be applied separately from the asphalt productivity defaults.<\/p>\n<h3>Underlayment, ice and water shield, drip edge, ridge vent<\/h3>\n<p>The accessory layers are mandatory on a code-compliant roof. Synthetic underlayment has displaced 15-pound felt as the default underlayment in most jurisdictions. Specifically, synthetic underlayment is lighter, tear-resistant, and faster to install. <strong>Ice and water shield<\/strong> is a self-adhered bitumen membrane required at eaves in cold-climate jurisdictions to protect against ice dam backflow. The exact requirement traces to your local building code, typically based on the <a href=\"https:\/\/www.iccsafe.org\/products-and-services\/i-codes\/2024-i-codes\/irc\/\" target=\"_blank\" rel=\"noopener\">International Residential Code<\/a> Chapter 9. <strong>Drip edge<\/strong> is metal flashing at eaves and rakes. As a result, it directs water off the deck. <strong>Ridge vent<\/strong> is the exhaust side of the attic ventilation system and runs in linear feet along the ridge. Therefore, every estimate includes line items for each accessory layer, sourced to the actual product specs the crew will install.<\/p>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Material<\/th>\n<th scope=\"col\">Typical price band per square (material only)<\/th>\n<th scope=\"col\">Service life<\/th>\n<th scope=\"col\">Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Asphalt 3-tab<\/td>\n<td>~$90 to $110<\/td>\n<td>15 to 20 years<\/td>\n<td>Budget tier; declining market share<\/td>\n<\/tr>\n<tr>\n<td>Asphalt architectural<\/td>\n<td>~$100 to $135<\/td>\n<td>25 to 30 years<\/td>\n<td>Dominant 2026 category<\/td>\n<\/tr>\n<tr>\n<td>Designer asphalt<\/td>\n<td>~$160 to $260<\/td>\n<td>30 to 40 years<\/td>\n<td>Premium asphalt tier<\/td>\n<\/tr>\n<tr>\n<td>Standing-seam metal<\/td>\n<td>~$300 to $700<\/td>\n<td>40 to 70 years<\/td>\n<td>Premium metal category<\/td>\n<\/tr>\n<tr>\n<td>Exposed-fastener metal<\/td>\n<td>~$130 to $260<\/td>\n<td>25 to 40 years<\/td>\n<td>Budget metal; fastener maintenance<\/td>\n<\/tr>\n<tr>\n<td>Cedar shake<\/td>\n<td>~$400 to $700<\/td>\n<td>20 to 40 years<\/td>\n<td>Craft-skill installation<\/td>\n<\/tr>\n<tr>\n<td>Slate (natural)<\/td>\n<td>$800 and up<\/td>\n<td>75 to 100 years<\/td>\n<td>Structural review often required<\/td>\n<\/tr>\n<tr>\n<td>Synthetic composite (slate or shake look)<\/td>\n<td>~$300 to $600<\/td>\n<td>40 to 50 years<\/td>\n<td>Lighter than real slate<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Material price bands above reflect contractor pricing at supplier counters and vary by region, manufacturer, and order volume. Furthermore, the bands do not include accessories (underlayment, ice and water shield, drip edge, fasteners, ridge vent) which add roughly $40 to $80 per square on top of the shingle bundle. As a result, every estimate should price the accessory bundle as a separate line, not as a hidden markup on the shingle line.<\/p>\n<h2>Step 4: Price the tear-off and disposal<\/h2>\n<p>Tear-off is its own line item, separate from installation. Specifically, the labor to strip an existing roof, sweep the deck, and load the dumpster runs roughly half to two-thirds of the labor to install the new roof on the same square count. Furthermore, single-layer tear-off is faster than two-layer tear-off because the second layer fights the first. As a result, a roof with two existing layers of asphalt costs more to tear off than a single-layer roof of the same square count. Pricing the tear-off as its own line keeps the estimate honest and gives the homeowner a clean comparison between contractors.<\/p>\n<h3>Squares of removal<\/h3>\n<p>Tear-off productivity is benchmarked against squares of existing roof removed per labor hour. Specifically, a single-layer 25-square tear-off at average pitch finishes faster than a two-layer 25-square tear-off at the same pitch. The ratio is roughly 1.5x to 1.8x for double layer versus single. As a result, contractors who quote tear-off at a flat rate per square without checking the layer count lose money on every two-layer job. The fix is a quick on-roof check with a flat bar to count layers before the estimate prints.<\/p>\n<h3>Dumpster fees and disposal<\/h3>\n<p>A 25-square asphalt tear-off generates roughly 5 to 7 tons of debris. Therefore, the dumpster has to be sized correctly. A 20-yard dumpster typically handles a 20 to 30 square asphalt tear-off. A 30-yard handles 30 to 45 squares. Specifically, dumpster fees in 2026 fall in the $350 to $650 range nationally for a 20-yard, with regional variation higher in dense urban markets. Furthermore, some markets charge an additional disposal tipping fee at the landfill, separate from the dumpster rental.<\/p>\n<h3>Tarping, magnet sweep, debris hauling<\/h3>\n<p>The tear-off price should also include a magnet sweep of the property line at the end of each work day to recover dropped nails. As a result, an estimate that only quotes the dumpster and the labor to load it has missed the magnet sweep, the tarping cost when the day ends mid-tear-off, and any debris hauling for non-shingle waste (rotted decking, old flashing, ridge vent removed). Therefore, a complete tear-off line includes labor, dumpster, sweep, tarping, and miscellaneous hauling as one bundled price.<\/p>\n<h2>Step 5: Calculate labor cost<\/h2>\n<p>Labor is the cost line that varies most between contractors and the cost line where contractors who do not understand how to estimate a roofing job lose money fastest. Specifically, labor cost depends on the burdened wage of the crew, the hours per square the crew installs at on this material and pitch, the crew composition (foreman plus installers plus ground), and the fall-protection setup time required by <a href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1926\/1926.501\" target=\"_blank\" rel=\"noopener\">OSHA 29 CFR 1926.501<\/a>. Get any of those wrong and the labor line is wrong by 20 to 40 percent. The framework below gives a defensible labor calculation that respects all four inputs.<\/p>\n<h3>Hours per square by pitch and material<\/h3>\n<p>Base productivity for an experienced 4-person crew installing architectural asphalt on a simple 6\/12 gable runs roughly 1.5 to 2.5 labor hours per square (where 1 labor hour equals 1 person working 1 hour). Furthermore, the same crew on a 10\/12 cut-up hip with dormers may install at 3.5 to 5 labor hours per square. As a result, the hours-per-square figure is not one number; it is a range that gets narrowed by pitch and complexity multipliers. Tear-off labor adds another 0.75 to 1.5 labor hours per square on top of the install figure.<\/p>\n<h3>BLS roofer wage data<\/h3>\n<p>The <a href=\"https:\/\/www.bls.gov\/ooh\/construction-and-extraction\/roofers.htm\" target=\"_blank\" rel=\"noopener\">Bureau of Labor Statistics Occupational Outlook Handbook<\/a> tracks roofers under occupation code 47-2181. Specifically, BLS publishes national and state-level wage data updated annually through the Occupational Employment and Wage Statistics (OEWS) program. As a result, the burdened roofer wage for estimating purposes runs higher than the BLS-published median wage because burden adds workers&#8217; compensation, FICA, unemployment, and benefits on top of the base wage. Workers&#8217; comp alone often runs 15 to 30 percent of base wage in the roofing trade, which is higher than most construction trades because of fall risk. Therefore, contractors should build labor cost off the burdened wage, not the take-home wage.<\/p>\n<h3>Crew composition<\/h3>\n<p>A typical residential roofing crew is 4 people: a foreman who runs the job and handles flashing details, two installers who run the bulk shingle installation, and a ground person who handles loading, tear-off support, and cleanup. Furthermore, the foreman wage is higher than the installer wage. As a result, the labor cost calculation is not a single hourly rate times hours; it is a weighted average across the crew. Specifically, a $40 burdened foreman, two $30 burdened installers, and one $25 burdened ground person yields a crew-hour cost of $125. Therefore, the crew-hour cost is the right input for the labor portion of the estimate, not the rate of any single position.<\/p>\n<h3>Fall protection setup time<\/h3>\n<p>OSHA 1926.501 requires fall protection on any roof at 6 feet or more above lower levels. Specifically, subsection (b)(11) requires that &#8220;each employee on a steep roof with unprotected sides and edges 6 feet (1.8 m) or more above lower levels shall be protected from falling by guardrail systems with toeboards, safety net systems, or personal fall arrest systems.&#8221; Furthermore, subsection (b)(10) covers low-slope roofs and accepts a wider menu of protection methods. As a result, fall-protection setup time, which most contractors do not bill for explicitly, is real labor that has to land somewhere on the estimate. Specifically, anchor installation, harness checks, and the morning safety briefing add roughly 30 to 60 minutes of crew time per day to every steep-roof job. Therefore, a multi-day reroof carries multiple days of setup time, not just one.<\/p>\n<div class=\"sw-a__callout\"><strong>OSHA tip for estimators:<\/strong> Fall-protection setup time is not optional. It is paid labor. Build it into the labor line so it does not erode margin. Workers&#8217; comp insurance for roofers reflects the consequences when contractors skip it.<\/div>\n<h2>Step 6: Add the items contractors miss<\/h2>\n<p>The items that get missed on roofing estimates are the same items that show up on every change order. Specifically, flashing replacement, skylight reseal, soffit and fascia repair, gutter coordination, attic ventilation upgrades, and rotted decking provisions are the dominant change-order categories. As a result, contractors who learn how to estimate a roofing job thoroughly add these as either explicit line items or as named allowances. Furthermore, naming the allowance on the estimate (&#8220;Up to 8 sheets of decking replacement included; additional sheets billed at $X each&#8221;) is the cleanest way to keep the relationship intact when the work expands.<\/p>\n<h3>Flashing replacement<\/h3>\n<p>Step flashing at sidewalls, counter flashing at chimneys, apron flashing at horizontal walls, and skylight flashing kits all wear out on roughly the same cycle as the shingles above them. Therefore, an estimate that reuses old flashing on a new roof is buying a callback. Specifically, NRCA Roofing Manual guidance recommends replacing flashing on every reroof rather than reusing it. As a result, the estimate should include a flashing line that covers chimney rebuilds (counter flashing reset into mortar), sidewall step flashing, and any saddle or cricket assemblies. Pricing for flashing varies materially by complexity. Simple sidewall step flashing may run $5 to $12 per linear foot installed. Chimney work runs higher.<\/p>\n<h3>Skylight reseal or replacement<\/h3>\n<p>Skylights are the single biggest leak source on residential roofs. Furthermore, a reroof that does not address the skylight is a reroof that will leak through the skylight within a few seasons. As a result, the estimate should explicitly state whether each skylight is being resealed (new flashing kit, new boot) or replaced (full unit swap). Therefore, the price difference between reseal and replace is significant: a Velux fixed deck-mount skylight in a typical residential size runs in the high three figures for the unit alone, plus installation labor. Replacement is the right call when the skylight is older than 15 years or showing condensation between glass panes.<\/p>\n<h3>Soffit, fascia, and gutter coordination<\/h3>\n<p>Roofing work coordinates with soffit, fascia, and gutter work because they share the same edge. Specifically, removing gutters during tear-off and reinstalling them after the new drip edge goes on is a common workflow. As a result, the estimate should clarify whether gutters are being removed and reinstalled (gutter labor on the estimate), replaced (full gutter line), or left in place (with a note about the limitation that creates). Furthermore, fascia replacement at rotted spots is a separate line, billed by linear foot, because the carpentry crew may be different from the roofing crew.<\/p>\n<h3>Attic ventilation upgrades<\/h3>\n<p>Many older homes have inadequate attic ventilation, which shortens shingle service life and triggers ice damming in cold climates. Therefore, the reroof is the right window to upgrade ventilation. Specifically, ridge vent paired with continuous soffit vent is the dominant residential ventilation system in 2026. As a result, the estimate should price ridge vent in linear feet and soffit vent improvements (cutting in soffit vents that do not exist, upsizing those that do) as a separate line. Furthermore, attic insulation work is a related upsell that some contractors include and some refer out.<\/p>\n<h3>Rotted decking provision<\/h3>\n<p>Rotted plywood or sheathing is the single most common surprise on reroofs. As a result, every estimate should include either a per-sheet allowance (&#8220;Up to 4 sheets of 7\/16 OSB replacement included; additional sheets billed at $95 per sheet supplied and installed&#8221;) or an explicit &#8220;decking replacement billed time and materials&#8221; clause. Therefore, the homeowner is not surprised when the crew finds rot. Furthermore, the allowance approach is cleaner than the time-and-materials approach because it gives the homeowner a worst-case dollar visibility.<\/p>\n<h2>Step 7: Apply markup and overhead<\/h2>\n<p>Markup is where the contractor recoups overhead and earns gross margin. Specifically, residential roofing operates on gross margins that typically fall in the 15 to 25 percent range, with the better-run operations holding the upper end of that band. Furthermore, the markup is applied on top of the direct cost (materials plus labor plus tear-off plus add-ons) to land at the customer-facing price. As a result, a contractor who skips the markup, or who applies a flat percent without thinking through overhead, is running on margin so thin that one bad job wipes out a quarter. Knowing how to estimate a roofing job means knowing the markup math the same way a CFO knows the income statement.<\/p>\n<h3>Gross margin targets for residential roofing<\/h3>\n<p>The 15 to 25 percent gross margin band reflects published industry survey data and informal contractor benchmarks tracked by trade associations. Specifically, the lower end of the band (15 percent) is typical of high-volume operations that compete on price and run thin overhead. Furthermore, the upper end (25 percent) reflects premium operations that compete on warranty, service, and installation quality. As a result, a new contractor learning how to estimate a roofing job should target the upper end of the band on every estimate, then negotiate down only when there is a specific reason. Bidding from the bottom of the band leaves nothing on the table for the customer to negotiate against.<\/p>\n<h3>Overhead allocation<\/h3>\n<p>Overhead is the indirect cost of running the business: office rent, software subscriptions, vehicle costs, insurance premiums (general liability, workers&#8217; comp, commercial auto), sales commissions, marketing, and the owner&#8217;s salary if the owner is not on the tools. Specifically, overhead allocation expresses overhead as a percentage of revenue. As a result, a contractor with $80,000 of annual overhead and $400,000 of annual revenue carries a 20 percent overhead burden, which has to be priced into every estimate before gross margin. Therefore, the markup math runs: direct cost divided by (1 minus overhead percent minus margin percent) equals customer-facing price.<\/p>\n<h3>Sales tax and permit fees<\/h3>\n<p>Sales tax treatment varies by state. Specifically, some states tax materials only, some tax materials and labor together, and some treat residential roof work as a real-property service that is not directly taxable but where the contractor pays sales tax at supplier purchase. As a result, sales tax has to land on the estimate either as an explicit line or as a baked-in cost that the markup recovers. Furthermore, permit fees vary by jurisdiction. Most residential reroofs require a permit. Permit fees range from $50 in the smallest jurisdictions to several hundred dollars in dense urban markets.<\/p>\n<h3>Storm-damage and insurance-paid jobs<\/h3>\n<p>Storm-damage reroofs and insurance-paid jobs follow different markup rules. Specifically, the carrier issues a claim payment based on Xactimate or similar pricing software, and the contractor&#8217;s role is to scope the work, agree on the claim amount with the adjuster, and complete the work within that envelope. As a result, the gross-margin calculation on insurance work depends on the pricing the carrier accepts, not on the contractor&#8217;s preferred markup. Furthermore, supplements (additional line items submitted to the carrier mid-job) are a normal part of the insurance workflow when the crew uncovers damage the adjuster did not see. Therefore, insurance work is its own subdiscipline within residential roofing estimation.<\/p>\n<h2>Step 8: Build the estimate document<\/h2>\n<p>The estimate document is the customer-facing artifact. Specifically, it has to be clear enough that the homeowner understands what they are buying and detailed enough that there is no ambiguity if a dispute arises later. As a result, the document follows a standard structure: scope of work, line-item pricing, manufacturer warranty information, contractor warranty terms, payment schedule, and exclusions or assumptions. Furthermore, the document is also the legal record of the agreement once the homeowner signs. Therefore, every line on the estimate should be defensible: every dollar traces to either material cost, labor cost, tear-off, add-on, overhead, margin, sales tax, or permit.<\/p>\n<h3>Itemized line items with clear scope<\/h3>\n<p>The line-item structure of a clean residential roofing estimate looks like: tear-off (squares + dumpster), decking provision (allowance or T&amp;M clause), underlayment (synthetic or felt, square feet), ice and water shield (linear feet at eaves and valleys), drip edge (linear feet of eaves and rakes), starter strip (linear feet of eaves and rakes), shingles (squares of architectural at named manufacturer), hip and ridge (linear feet at named manufacturer), ridge vent (linear feet), flashing (chimney, sidewall, skylight, vent boots), labor (lump sum for installation), permit, and sales tax. Therefore, the homeowner sees what they are paying for and the contractor has receipts when a question comes up.<\/p>\n<h3>Manufacturer warranty information<\/h3>\n<p>The manufacturer warranty is a key part of the value proposition. Specifically, GAF Master Elite, Owens Corning Platinum, and CertainTeed SELECT ShingleMaster are credentialed installer programs that unlock upgraded warranty terms when the installer is in the program. As a result, an estimate from a credentialed installer can include the upgraded warranty as a value differentiator. Furthermore, the basic manufacturer warranty (lifetime limited, wind warranty, algae warranty) applies even from non-credentialed installers, so the estimate should still describe the basic warranty terms.<\/p>\n<h3>Contractor warranty terms<\/h3>\n<p>The contractor&#8217;s own workmanship warranty is separate from the manufacturer warranty. Specifically, residential roofing workmanship warranties typically run 5 to 10 years. As a result, the estimate document should state the workmanship warranty term explicitly. Furthermore, the workmanship warranty terms should clarify what is covered (installation defects causing leaks) and what is not covered (storm damage, ice damming on a roof without the homeowner adopting recommended ventilation, third-party damage).<\/p>\n<h3>Payment schedule and deposit terms<\/h3>\n<p>Most residential roofing operations collect a deposit at signing, an interim payment when materials are delivered to the site, and final payment on completion. Specifically, the deposit-interim-final structure aligns the cash flow with the cost incurred. Furthermore, some states regulate maximum residential deposit amounts. As a result, the estimate should state the payment schedule explicitly so the homeowner is not surprised by the timing of payment requests.<\/p>\n<h3>Exclusions and assumptions<\/h3>\n<p>The exclusions section prevents disputes. Specifically, common exclusions include: existing structural defects, attic insulation or ventilation work outside the named scope, gutter replacement, satellite dish removal and reinstallation, lead capping on plumbing vents (if not separately quoted), and any work uncovered after tear-off begins. Therefore, the homeowner reads the exclusions, asks questions, and the contractor either includes the items or confirms they are out of scope.<\/p>\n<h2>Speed up the estimate workflow with SimplyWise Cost Estimator<\/h2>\n<p>Building a roofing estimate the traditional way runs 45 to 90 minutes per house. Specifically, the contractor measures (or pulls a satellite report), applies pitch and complexity multipliers, prices the material bundle from supplier counters, calculates labor against the crew composition, layers in overhead and margin, and writes the document. As a result, contractors who run high estimate volume have to choose between thoroughness (which costs time) and speed (which costs accuracy). The SimplyWise Cost Estimator collapses that trade-off.<\/p>\n<p><a href=\"https:\/\/www.simplywise.com\/cost-estimator\/\" target=\"_blank\" rel=\"noopener\">SimplyWise Cost Estimator<\/a> uses photo-to-estimate intelligence to turn a job site photo or a satellite roof image into a sourced material list and labor breakdown in seconds. Furthermore, the SimplyWise AI Estimation Engine handles the math that contractors learning how to estimate a roofing job have to internalize: pitch multipliers, waste factors, accessory layers, tear-off labor, fall-protection setup time, and burden-loaded labor cost. As a result, a 25-square architectural reroof estimate that takes 60 minutes manually drops to a few minutes with the photo-to-estimate workflow. The contractor still reviews and adjusts before the document goes to the homeowner. The math is just done first.<\/p>\n<p>SimplyWise Cost Estimator is <strong>free to try<\/strong>. A contractor can build their next handful of roofing estimates with the photo-to-estimate workflow before deciding whether to subscribe. Try it on your next site visit and compare the output against your own estimate. The math should match within a tight margin, and the time saved scales linearly with estimate volume.<\/p>\n<h2>How long does a roofing estimate take and what should it include?<\/h2>\n<p>A traditional manual roofing estimate runs 45 to 90 minutes per house: 15 to 30 minutes for measurement, 15 to 30 minutes for material pricing and labor calculation, and 15 to 30 minutes for document assembly. Furthermore, the photo-to-estimate workflow with SimplyWise Cost Estimator collapses the math portion to seconds, leaving only the on-site inspection and the document review on the contractor&#8217;s plate. As a result, a high-volume residential roofing operation can run 4 to 8 estimates a day instead of 2 to 3, which compounds into materially higher booking volume across a season.<\/p>\n<h3>Cost breakdown for a typical 25-square architectural asphalt reroof<\/h3>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Cost line<\/th>\n<th scope=\"col\">Typical 2026 range<\/th>\n<th scope=\"col\">Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tear-off (single layer, 25 squares)<\/td>\n<td>~$75 to $125 per square<\/td>\n<td>Includes labor, dumpster, magnet sweep<\/td>\n<\/tr>\n<tr>\n<td>Architectural shingles (25 squares + 12% waste)<\/td>\n<td>~$2,800 to $3,800<\/td>\n<td>Material at supplier counter<\/td>\n<\/tr>\n<tr>\n<td>Synthetic underlayment<\/td>\n<td>~$200 to $400<\/td>\n<td>~10 squares of coverage<\/td>\n<\/tr>\n<tr>\n<td>Ice and water shield (eaves + valleys)<\/td>\n<td>~$300 to $700<\/td>\n<td>Where required by code<\/td>\n<\/tr>\n<tr>\n<td>Drip edge (linear feet of eaves and rakes)<\/td>\n<td>~$150 to $300<\/td>\n<td>Metal flashing<\/td>\n<\/tr>\n<tr>\n<td>Ridge vent (linear feet of ridge)<\/td>\n<td>~$200 to $500<\/td>\n<td>With ridge cap shingles<\/td>\n<\/tr>\n<tr>\n<td>Flashing replacement (sidewalls, vent boots)<\/td>\n<td>~$300 to $800<\/td>\n<td>Excludes major chimney work<\/td>\n<\/tr>\n<tr>\n<td>Labor (install, 25 squares simple gable, 6\/12)<\/td>\n<td>~$1,500 to $3,000<\/td>\n<td>Burden-loaded crew labor<\/td>\n<\/tr>\n<tr>\n<td>Permit fee<\/td>\n<td>$50 to $500<\/td>\n<td>Varies by jurisdiction<\/td>\n<\/tr>\n<tr>\n<td>Decking allowance (4 sheets included)<\/td>\n<td>~$300 to $500<\/td>\n<td>Disclosed allowance<\/td>\n<\/tr>\n<tr>\n<td>Subtotal direct cost<\/td>\n<td>~$7,500 to $13,500<\/td>\n<td>Before overhead and margin<\/td>\n<\/tr>\n<tr>\n<td>Overhead and gross margin (combined ~30 to 40 percent)<\/td>\n<td>~$2,500 to $5,500<\/td>\n<td>Held by the contractor<\/td>\n<\/tr>\n<tr>\n<td>Customer-facing total<\/td>\n<td>~$10,000 to $19,000<\/td>\n<td>Range reflects regional and complexity variation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The ranges above reflect 2026 supplier pricing and labor costs for a simple 25-square architectural asphalt reroof on a 6\/12 gable in a typical metro market. Therefore, the actual customer-facing price varies by market, by complexity, and by material upgrade. A 25-square cut-up hip roof on a 10\/12 pitch with three dormers runs materially higher on labor and waste, which pushes the customer-facing price toward the upper end of the band or above it.<\/p>\n<\/p><\/div>\n<\/section>\n<section class=\"sw-a__pull\">\n<blockquote><p>\n    A clean roofing estimate is the difference between a 20 percent gross margin and a 0 percent margin. The numbers do not lie. The crew either had what they needed delivered to the curb on day one, or the job lost money before the first shingle hit the roof.\n  <\/p><\/blockquote>\n<p>  <cite>SimplyWise Editorial<\/cite><br \/>\n<\/section>\n<section class=\"sw-a__faq\">\n<h2>Frequently asked questions about how to estimate a roofing job<\/h2>\n<div class=\"sw-a__faq-list\">\n<h3 class=\"sw-a__faq-cat\">Roofing estimate workflow<\/h3>\n<details>\n<summary>How do you estimate a roofing job step by step?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>To estimate a roofing job step by step: measure the roof in squares (1 square = 100 sq ft) using a satellite report, drone, or on-roof tape; apply a pitch multiplier (about 1.05 at 4\/12, 1.20 at 8\/12, 1.30+ at 10\/12); add a 10 to 20 percent waste factor; price the material bundle at supplier rates; price tear-off and disposal as a separate line; calculate labor against burdened crew-hour cost and hours-per-square productivity; add the items contractors miss (flashing, skylight, decking allowance, ventilation); apply 15 to 25 percent gross margin plus overhead; finally, layer in sales tax and permit fees and write the document.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>How long does a roofing estimate take?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>A traditional manual roofing estimate takes 45 to 90 minutes per house, broken down as 15 to 30 minutes for measurement, 15 to 30 minutes for material pricing and labor calculation, and 15 to 30 minutes for document assembly. The photo-to-estimate workflow with SimplyWise Cost Estimator collapses the math portion to seconds, leaving only the on-site inspection and the document review on the contractor&#8217;s plate. High-volume operations using photo-to-estimate intelligence can run 4 to 8 estimates a day instead of 2 to 3.<\/p>\n<\/p><\/div>\n<\/details>\n<h3 class=\"sw-a__faq-cat\">Document and pricing<\/h3>\n<details>\n<summary>What goes in a roofing quote?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>A complete roofing quote includes: scope of work, itemized line items (tear-off, decking allowance, underlayment, ice and water shield, drip edge, starter strip, shingles, hip and ridge, ridge vent, flashing, labor, permit, sales tax), manufacturer warranty information (GAF, Owens Corning, CertainTeed terms), contractor workmanship warranty (typically 5 to 10 years), payment schedule (deposit at signing, interim at material delivery, final at completion), and exclusions or assumptions. The line-item structure prevents disputes and gives the homeowner a clean comparison against competing quotes.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>How do you price a roof tear-off?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>Roof tear-off pricing runs on three components: labor to strip the existing roof and load the dumpster (benchmarked against squares per labor hour), dumpster fees ($350 to $650 nationally for a 20-yard, sized for 20 to 30 squares of single-layer asphalt), and cleanup including magnet sweep and tarping. Single-layer tear-off is roughly 1.5 to 1.8 times faster than double-layer tear-off, so always check layer count before quoting. A 25-square asphalt tear-off generates 5 to 7 tons of debris, which sets the dumpster sizing and disposal cost.<\/p>\n<\/p><\/div>\n<\/details>\n<h3 class=\"sw-a__faq-cat\">Pitch, complexity, and labor<\/h3>\n<details>\n<summary>What waste factor should I use on a complex hip roof?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>Use a 15 to 20 percent waste factor on a complex hip-and-valley roof. Simple two-plane gable roofs use 10 to 12 percent. The waste factor accounts for cuts at hips, ridges, valleys, and dormers, plus the starter strip and ridge cap shingles cut from full shingles in many installation systems. Cut-up roofs with multiple penetrations (skylights, chimneys, dormers, plumbing vents) push toward 20 percent. Steep pitches (10\/12 and above) with cut-up complexity occasionally justify 22 percent on quotes you intend to win without an awkward materials shortfall mid-job.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>How much labor cost per roofing square?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>Labor cost per square depends on burdened crew-hour cost and hours per square. An experienced 4-person crew on a simple 6\/12 architectural asphalt gable installs at roughly 1.5 to 2.5 labor hours per square. Tear-off adds 0.75 to 1.5 hours per square. At a $125 burdened crew-hour cost (foreman plus two installers plus ground), install labor runs roughly $190 to $315 per square, plus tear-off labor of $95 to $190 per square. Steep pitches (10\/12+) and cut-up hip roofs push productivity toward 3.5 to 5 hours per square, materially raising the labor line.<\/p>\n<\/p><\/div>\n<\/details><\/div>\n<\/section>\n<section class=\"sw-a__finalcta\">\n  <span class=\"sw-a__eyebrow\">Estimate faster<\/span><\/p>\n<h2>Estimate the next roof in seconds, not hours.<\/h2>\n<p>Stop spending 60 minutes per house on math. SimplyWise Cost Estimator turns a job site photo into a sourced material list and labor breakdown in seconds. Built for residential roofers who want to bid more jobs and hold margin. Free to try.<\/p>\n<div class=\"sw-a__cta-buttons\">\n    <a class=\"sw-a__btn\" href=\"https:\/\/swcostestimator.app.link\/ce-ai\" target=\"_blank\" rel=\"noopener\">Try SimplyWise Cost Estimator, free<\/a><br \/>\n    <a class=\"sw-a__btn sw-a__btn--ghost\" href=\"\/blog\/best-estimating-app-roofing-contractors\/\">See the best roofing estimating apps<\/a>\n  <\/div>\n<\/section>\n<\/article>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Article\",\n  \"headline\": \"How to Estimate a Roofing Job: Contractor Guide 2026\",\n  \"description\": \"How to estimate a roofing job step by step: measure squares, pick materials, price labor, add tear-off and markup. Sourced 2026 contractor guide.\",\n  \"author\": {\"@type\": \"Organization\", \"name\": \"SimplyWise\"},\n  \"publisher\": {\"@type\": \"Organization\", \"name\": \"SimplyWise\", \"logo\": {\"@type\": \"ImageObject\", \"url\": \"https:\/\/simplywise.com\/logo.png\"}},\n  \"datePublished\": \"2026-05-04\",\n  \"dateModified\": \"2026-05-04\",\n  \"image\": \"https:\/\/images.unsplash.com\/photo-1635424709870-cdc6e64f0e20?w=1400&h=700&fit=crop&q=80&auto=format\"\n}\n<\/script><\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"HowTo\",\n  \"name\": \"How to Estimate a Roofing Job\",\n  \"description\": \"Step-by-step roofing estimate workflow used by professional residential roofing contractors.\",\n  \"totalTime\": \"PT60M\",\n  \"supply\": [\n    {\"@type\": \"HowToSupply\", \"name\": \"Satellite or aerial roof report (EagleView, RoofSnap, Hover) or 100-foot tape and pitch gauge\"},\n    {\"@type\": \"HowToSupply\", \"name\": \"Material price list from supplier counter\"},\n    {\"@type\": \"HowToSupply\", \"name\": \"Crew composition and burdened labor cost\"}\n  ],\n  \"step\": [\n    {\"@type\": \"HowToStep\", \"position\": 1, \"name\": \"Measure the roof in squares\", \"text\": \"Measure the roof surface in squares (1 square = 100 square feet) using a satellite or aerial measurement report, a drone flyover, or an on-roof manual measurement with a tape and pitch gauge.\"},\n    {\"@type\": \"HowToStep\", \"position\": 2, \"name\": \"Adjust for pitch and complexity\", \"text\": \"Apply a pitch multiplier (about 1.05 at 4\/12, 1.20 at 8\/12, 1.30+ at 10\/12) to convert footprint to surface area, then apply a complexity multiplier (1.0 simple gable to 1.30+ complex hip with dormers).\"},\n    {\"@type\": \"HowToStep\", \"position\": 3, \"name\": \"Choose roofing material and price the bundle\", \"text\": \"Select the material category (asphalt 3-tab, architectural, designer, metal, cedar, slate, synthetic) and price the bundle plus accessories (underlayment, ice and water shield, drip edge, starter strip, ridge vent).\"},\n    {\"@type\": \"HowToStep\", \"position\": 4, \"name\": \"Price the tear-off and disposal\", \"text\": \"Price tear-off as a separate line including labor, dumpster fees ($350 to $650 for a 20-yard nationally in 2026), magnet sweep, and tarping. Verify single-layer vs double-layer count before quoting.\"},\n    {\"@type\": \"HowToStep\", \"position\": 5, \"name\": \"Calculate labor cost\", \"text\": \"Calculate labor against burdened crew-hour cost (foreman plus installers plus ground) and hours per square (1.5 to 2.5 for simple 6\/12 architectural asphalt; 3.5 to 5 for cut-up hip at 10\/12+). Include OSHA fall-protection setup time.\"},\n    {\"@type\": \"HowToStep\", \"position\": 6, \"name\": \"Add the items contractors miss\", \"text\": \"Add line items for flashing replacement (chimney, sidewall, vent boots), skylight reseal or replace, soffit and fascia coordination, attic ventilation upgrade, and rotted decking allowance.\"},\n    {\"@type\": \"HowToStep\", \"position\": 7, \"name\": \"Apply markup and overhead\", \"text\": \"Apply 15 to 25 percent gross margin plus overhead allocation on top of the direct cost subtotal. Add sales tax (varies by state) and permit fees ($50 to $500 by jurisdiction). Insurance-paid storm jobs follow Xactimate-driven pricing instead.\"},\n    {\"@type\": \"HowToStep\", \"position\": 8, \"name\": \"Build the estimate document\", \"text\": \"Write the customer-facing estimate document with itemized line items, scope of work, manufacturer warranty info (GAF, Owens Corning, CertainTeed), contractor workmanship warranty (5 to 10 years), payment schedule (deposit, interim, final), and exclusions or assumptions.\"}\n  ]\n}\n<\/script><\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"How do you estimate a roofing job step by step?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Measure the roof in squares (1 square = 100 sq ft) using a satellite report, drone, or on-roof tape; apply a pitch multiplier (about 1.05 at 4\/12, 1.20 at 8\/12, 1.30+ at 10\/12); add a 10 to 20 percent waste factor; price the material bundle; price tear-off as a separate line; calculate labor against burdened crew-hour cost and hours-per-square productivity; add flashing, skylight, decking allowance, and ventilation line items; apply 15 to 25 percent gross margin plus overhead; layer in sales tax and permit; write the document.\"}},\n    {\"@type\": \"Question\", \"name\": \"How long does a roofing estimate take?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A traditional manual roofing estimate takes 45 to 90 minutes per house: 15 to 30 minutes for measurement, 15 to 30 minutes for material pricing and labor calculation, and 15 to 30 minutes for document assembly. The photo-to-estimate workflow with SimplyWise Cost Estimator collapses the math portion to seconds, leaving only the on-site inspection and the document review on the contractor's plate.\"}},\n    {\"@type\": \"Question\", \"name\": \"What goes in a roofing quote?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Scope of work, itemized line items (tear-off, decking allowance, underlayment, ice and water shield, drip edge, starter strip, shingles, hip and ridge, ridge vent, flashing, labor, permit, sales tax), manufacturer warranty information (GAF, Owens Corning, CertainTeed), contractor workmanship warranty (typically 5 to 10 years), payment schedule (deposit at signing, interim at material delivery, final at completion), and exclusions or assumptions.\"}},\n    {\"@type\": \"Question\", \"name\": \"How do you price a roof tear-off?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Tear-off pricing runs on labor (squares per labor hour), dumpster fees ($350 to $650 nationally for a 20-yard, sized for 20 to 30 squares of single-layer asphalt), and cleanup (magnet sweep, tarping). Single-layer tear-off runs 1.5 to 1.8 times faster than double-layer, so always verify layer count. A 25-square asphalt tear-off generates 5 to 7 tons of debris.\"}},\n    {\"@type\": \"Question\", \"name\": \"What waste factor should I use on a complex hip roof?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use 15 to 20 percent waste factor on a complex hip-and-valley roof. Simple two-plane gable roofs use 10 to 12 percent. The waste factor accounts for cuts at hips, ridges, valleys, and dormers, plus starter strip and ridge cap shingles cut from full shingles. Cut-up roofs with multiple penetrations push toward 20 percent or 22 percent.\"}},\n    {\"@type\": \"Question\", \"name\": \"How much labor cost per roofing square?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"An experienced 4-person crew on a simple 6\/12 architectural asphalt gable installs at 1.5 to 2.5 labor hours per square; tear-off adds 0.75 to 1.5 hours per square. At a $125 burdened crew-hour cost, install labor runs roughly $190 to $315 per square plus tear-off labor of $95 to $190 per square. Steep pitches (10\/12+) and cut-up hips push productivity toward 3.5 to 5 hours per square.\"}}\n  ]\n}\n<\/script><\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"BreadcrumbList\",\n  \"itemListElement\": [\n    {\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/www.simplywise.com\/\"},\n    {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Blog\", \"item\": \"https:\/\/www.simplywise.com\/blog\/\"},\n    {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Estimating Guides\", \"item\": \"https:\/\/www.simplywise.com\/blog\/category\/estimating-guides\/\"},\n    {\"@type\": \"ListItem\", \"position\": 4, \"name\": \"How to Estimate a Roofing Job\", \"item\": \"https:\/\/www.simplywise.com\/blog\/how-to-estimate-roofing-job\/\"}\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Draft stub for How to Estimate a Roofing Job (Contractor Guide) \u2014 see Notion Content Calendar for context.<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6088","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Estimate a Roofing Job: Contractor Guide 2026<\/title>\n<meta name=\"description\" content=\"How to estimate a roofing job step by step: measure squares, pick materials, price labor, add tear-off and markup. 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