{"id":9571,"date":"2026-09-21T09:00:00","date_gmt":"2026-09-21T09:00:00","guid":{"rendered":"https:\/\/www.simplywise.com\/blog\/?p=9571"},"modified":"2026-09-21T16:12:23","modified_gmt":"2026-09-21T16:12:23","slug":"foundation-waterproofing-cost","status":"publish","type":"post","link":"https:\/\/www.simplywise.com\/blog\/foundation-waterproofing-cost\/","title":{"rendered":"Foundation Waterproofing Cost: Exterior Membrane and Drain"},"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 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4px;}@media(max-width:600px){.swc{padding:20px 16px 14px;border-radius:16px;}.swc__grid{gap:10px;}.swc__num{font-size:38px;}.swc__preset{padding:12px 0;}.swc__presets{flex-wrap:wrap;}.swc__custom{flex:1 1 100%;}}<\/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=\"pm\">\n<header class=\"pm__hero\">\n<div class=\"pm__inner\">\n<nav class=\"pm__crumb\">Blog &nbsp;&rsaquo;&nbsp; How to Estimate<\/nav>\n<p><span class=\"pm__eyebrow\">Contractor Calculator &middot; Foundations<\/span><\/p>\n<h1>Foundation Waterproofing Cost: Exterior Membrane, Coating, and Drain<\/h1>\n<p class=\"pm__dek\">The outside job, priced the way you buy it. Set the wall run, the treated height, and the treatment. Area, material, and cost update as you type.<\/p>\n<p class=\"pm__dek-cta\">Pricing the dig? <a href=\"https:\/\/swcostestimator.app.link\/ce-ai\" rel=\"noopener\" target=\"_blank\">Estimate it from a photo<\/a> in about six seconds.<\/p>\n<div class=\"pm__rating\"><span class=\"pm__stars\">&#9733;&#9733;&#9733;&#9733;&#9733;<\/span> <b>4.8<\/b> <span class=\"pm__rating-sub\">on the App Store<\/span><\/div>\n<div class=\"pm__meta\">\n<span>SimplyWise<\/span><br \/>\n<i><\/i><br \/>\n<span>Updated September 21, 2026<\/span><br \/>\n<i><\/i><br \/>\n<span>5 min read<\/span>\n<\/div>\n<div class=\"swc\" id=\"swcalc\">\n<span class=\"swc__kicker\">Free Exterior Foundation Waterproofing Calculator<\/span><\/p>\n<div class=\"swc__title\">Wall area, material to buy, and what it costs<\/div>\n<div class=\"swc__field\"><label for=\"swc-lf\">Treatment<\/label><\/p>\n<div class=\"swc__presets\" id=\"swc-tr\"><button type=\"button\" class=\"swc__preset\" data-t=\"coat\">Dampproof coating<\/button><button type=\"button\" class=\"swc__preset is-on\" data-t=\"memb\">Waterproof membrane<\/button><button type=\"button\" class=\"swc__preset\" data-t=\"mat\">Membrane plus mat<\/button><\/div>\n<p><span class=\"swc__hint\" id=\"swc-trhint\">A 60 mil peel and stick sheet, 200 sq ft a roll.<\/span><\/div>\n<div class=\"swc__grid\">\n<div class=\"swc__field\"><label for=\"swc-lf\">Wall run (linear feet)<\/label><input id=\"swc-lf\" type=\"number\" inputmode=\"decimal\" min=\"1\" max=\"5000\" step=\"1\" value=\"140\"><\/div>\n<div class=\"swc__field\"><label for=\"swc-ht\">Treated wall height (ft)<\/label><input id=\"swc-ht\" type=\"number\" inputmode=\"decimal\" min=\"1\" max=\"14\" step=\"0.1\" value=\"8\"><\/div>\n<\/div>\n<div class=\"swc__grid\">\n<div class=\"swc__field\"><label for=\"swc-hrs\">Crew hours<\/label><input id=\"swc-hrs\" type=\"number\" inputmode=\"decimal\" min=\"0\" max=\"2000\" step=\"1\" value=\"40\"><\/div>\n<div class=\"swc__field\"><label for=\"swc-rate\">Crew rate, dollars an hour<\/label><input id=\"swc-rate\" type=\"number\" inputmode=\"decimal\" min=\"0\" max=\"500\" step=\"0.01\" value=\"22.66\"><\/div>\n<\/div>\n<p><span class=\"swc__hint\">The rate starts at the May 2025 median wage for Construction Laborers. A wage, not a billed rate.<\/span><\/p>\n<div class=\"swc__out\" aria-live=\"polite\">\n<div class=\"swc__big\"><span class=\"swc__num\" id=\"swc-area\">1,120<\/span><span class=\"swc__unit\">sq ft of wall to treat<\/span><\/div>\n<div class=\"swc__row\"><span>Material to buy<\/span><b id=\"swc-buy\">6 rolls at 200 sq ft<\/b><\/div>\n<div class=\"swc__row\"><span>Materials<\/span><b id=\"swc-mat\">$924 to $1,101<\/b><\/div>\n<div class=\"swc__row\"><span>Labor<\/span><b id=\"swc-lab\">$906<\/b><\/div>\n<div class=\"swc__row swc__row--cost\"><span>Materials plus labor<\/span><b id=\"swc-tot\">$1,830 to $2,007<\/b><\/div>\n<p class=\"swc__note\" id=\"swc-note\">Membrane price is two listings for one named 200 sq ft roll, both read September 11, 2026. Rolls are before laps.<\/p>\n<\/div>\n<\/div>\n<p><script>\n(function(){\n  \/\/ SOURCED CONSTANTS, one block. Every figure read live 2026-09-11.\n  \/\/ MEMBRANE, Polyguard 650 Sheet Membrane, 60 mil, 48 in x 50 ft roll = 200 sq ft.\n  \/\/   M_LO 154.00: BestMaterials LLC product page, \"Polyguard 650 Below Grade\n  \/\/     Peel\/Stick Waterproofing Membrane. 48 inch X 50 feet Roll. Price\/Roll.\"\n  \/\/   M_HI 183.38: polyguard.com store, \"650 Sheet Membrane 48\\\" x 50' 1 ROLL\/CTN\",\n  \/\/     SKU 650L48, price on the same Product node as the name.\n  \/\/ DRAINAGE MAT, Polyguard Polyflow 15, 4 ft x 50 ft roll = 200 sq ft.\n  \/\/   D_LO 172.82: EMI Supply, \"Polyguard Polyflow 15 Drainage Mat 4' x 50'\".\n  \/\/   D_HI 235.87: polyguard.com store, \"Polyflow 15\", SKU PG.PF.15, per roll.\n  \/\/ COATING, Black Jack Foundation and Roof Coating, product code 6025-9-30,\n  \/\/   5 gal pail, UPC 027134602559.\n  \/\/   COAT_LO 350 and COAT_HI 500 sq ft per coat per pail, and COATS 2:\n  \/\/     Gardner-Gibson technical data sheet H-18 for 6025, \"This 5 gallon pail\n  \/\/     covers 350 to 500 sq. ft., per coat ... Two coats are recommended.\"\n  \/\/   PAIL_LO 57.99: Elitsac product page, same MPN 6025-9-30 and UPC.\n  \/\/   PAIL_HI 62.99: Brinkmann's Blue Point product page, same MPN and UPC.\n  \/\/ WAGE 22.66: BLS OEWS May 2025, occupation 47-2061 Construction Laborers,\n  \/\/   national hourly median, series OEUN000000000000047206108. It is the\n  \/\/   default for a field the user overwrites, not a billed rate.\n  \/\/ NOT PRICED: no publisher states an installed price per foot of wall for\n  \/\/   exterior foundation waterproofing, and none is invented here.\n  var M_LO=154.00, M_HI=183.38, D_LO=172.82, D_HI=235.87, ROLL=200;\n  var PAIL_LO=57.99, PAIL_HI=62.99, COAT_LO=350, COAT_HI=500, COATS=2;\n  var DATED=' read September 11, 2026.';\n  function pl(n,s){return n+' '+s+(n===1?'':'s');}\n  var HINT={\n    coat:'Bituminous dampproofing, two coats per the maker sheet.',\n    memb:'A 60 mil peel and stick sheet, 200 sq ft a roll.',\n    mat:'Sheet membrane plus a dimple mat, both 200 sq ft a roll.'\n  };\n  var NOTE={\n    coat:'Coating price is two sellers listing one named 5 gallon pail, both'+DATED+' The low listing was out of stock that day. Coverage is the maker sheet.',\n    memb:'Membrane price is two listings for one named 200 sq ft roll, both read September 11, 2026. Rolls are before laps.',\n    mat:'Membrane and mat are two listings each for one named 200 sq ft roll, all'+DATED+' Rolls are before laps.'\n  };\n  var tr='memb';\n  function $(i){return document.getElementById(i);}\n  function c6(x){return Math.ceil(Number(x.toFixed(6)));}\n  function f6(x){return Math.floor(Number(x.toFixed(6)));}\n  function money(n){return '$'+n.toLocaleString('en-US');}\n  function val(el,lo,hi){var v=parseFloat(el.value);if(!isFinite(v)||v<lo||v>hi){return null;}return v;}\n  function neutral(){\n    $('swc-area').textContent='0';\n    $('swc-buy').textContent='enter a run and a height';\n    $('swc-mat').textContent='enter a run and a height';\n    $('swc-lab').textContent='$0';\n    $('swc-tot').textContent='enter a run and a height';\n    $('swc-note').textContent=NOTE[tr];\n  }\n  function run(){\n    $('swc-trhint').textContent=HINT[tr];\n    $('swc-note').textContent=NOTE[tr];\n    var lf=val($('swc-lf'),1,5000), ht=val($('swc-ht'),1,14);\n    var hrs=val($('swc-hrs'),0,2000), rate=val($('swc-rate'),0,500);\n    if(hrs===null){hrs=0;}\n    if(rate===null){rate=0;}\n    if(lf===null||ht===null){neutral();return;}\n    var area=c6(lf*ht), buy, lo, hi;\n    if(tr==='coat'){\n      var plo=c6(area*COATS\/COAT_HI), phi=c6(area*COATS\/COAT_LO);\n      buy=(plo===phi)?(pl(plo,'pail')+', two coats'):(plo+' to '+phi+' pails, two coats');\n      lo=f6(plo*PAIL_LO); hi=c6(phi*PAIL_HI);\n    }else{\n      var rolls=c6(area\/ROLL);\n      if(tr==='memb'){\n        buy=pl(rolls,'roll')+' at 200 sq ft';\n        lo=f6(rolls*M_LO); hi=c6(rolls*M_HI);\n      }else{\n        buy=pl(rolls,'membrane roll')+' plus '+pl(rolls,'mat roll');\n        lo=f6(rolls*(M_LO+D_LO)); hi=c6(rolls*(M_HI+D_HI));\n      }\n    }\n    var lab=f6(hrs*rate);\n    $('swc-area').textContent=area.toLocaleString('en-US');\n    $('swc-buy').textContent=buy;\n    $('swc-mat').textContent=money(lo)+' to '+money(hi);\n    $('swc-lab').textContent=money(lab);\n    $('swc-tot').textContent=money(lo+lab)+' to '+money(hi+lab);\n  }\n  var bs=document.querySelectorAll('#swc-tr .swc__preset');\n  bs.forEach(function(b){b.addEventListener('click',function(){\n    tr=b.getAttribute('data-t');\n    bs.forEach(function(x){x.classList.remove('is-on');});\n    b.classList.add('is-on');\n    run();\n  });});\n  ['swc-lf','swc-ht','swc-hrs','swc-rate'].forEach(function(i){$(i).addEventListener('input',run);});\n  run();\n})();\n<\/script><\/p>\n<figure class=\"pm__fig\">\n<img decoding=\"async\" alt=\"Open excavation along a poured concrete foundation wall with black dimple drainage mat fixed over the lower wall, rigid perimeter insulation boards above it, and a plate compactor on an excavator arm working the backfill in the trench\" loading=\"eager\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/46\/Senkrechte_Abdichtung.jpg\/1280px-Senkrechte_Abdichtung.jpg\"\/><figcaption class=\"pm__figcap\">Dimple drainage mat and perimeter insulation on a foundation wall before backfill. Photo by Patrick Oberd&ouml;rfer, <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/\" rel=\"noopener nofollow\" target=\"_blank\">CC BY-SA 4.0<\/a>, via <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Senkrechte_Abdichtung.jpg\" rel=\"noopener nofollow\" target=\"_blank\">Wikimedia Commons<\/a>.<\/figcaption><\/figure>\n<\/div>\n<\/header>\n<div class=\"pm__body\">\n<div class=\"pm__inner\">\n<aside class=\"pm__tldr\">\n<div class=\"pm__tldr-label\">At a glance<\/div>\n<ol>\n<li>Dampproofing and waterproofing are two code jobs, R406.1 and R406.2.<\/li>\n<li>A 60 mil sheet membrane covers 200 sq ft a roll and listed at $154.00 and $183.38.<\/li>\n<li>A 5 gallon dampproofing pail covers 350 to 500 sq ft a coat, and the maker wants two coats.<\/li>\n<li>No publisher states an installed price a foot, so this page prices material only.<\/li>\n<\/ol>\n<div class=\"pm__tldr-cta\"><span>Turn the takeoff into a branded quote.<\/span><a href=\"https:\/\/swcostestimator.app.link\/ce-ai\" rel=\"noopener\" target=\"_blank\">SimplyWise Cost Estimator<\/a><\/div>\n<\/aside>\n<h2>What this page prices, and what it does not<\/h2>\n<p>Foundation waterproofing cost means the outside job. Excavating to the footing, parging the wall, then coating or membrane on the exterior face. Then a drainage mat, the footing drain, and backfill. New construction and crawlspaces count too.<\/p>\n<p>Interior systems are different money. The sump pump, the interior sealer, and the digging it takes live on our <a href=\"https:\/\/www.simplywise.com\/blog\/basement-waterproofing-cost\/\">basement waterproofing cost<\/a> page.<\/p>\n<p class=\"pm__inline-cta\"><a href=\"https:\/\/swcostestimator.app.link\/ce-ai\" rel=\"noopener\" target=\"_blank\">SimplyWise Cost Estimator<\/a> turns a photo into an itemized estimate in about 6 seconds.<\/p>\n<h2>Dampproofing and waterproofing are two different code jobs<\/h2>\n<p>Most cost pages skip this. It moves the material line more than anything.<\/p>\n<p>Section R406.1 of the model code calls for <strong>dampproofing<\/strong> on walls that retain earth and enclose space below grade. It runs from grade to the top of the footing, or 6 inches below the basement floor, whichever is higher. Masonry gets 3\/8 inch of portland cement parging first, then one of five listed coatings, bituminous among them.<\/p>\n<p>Section R406.2 calls for <strong>waterproofing<\/strong> instead, where a high water table or severe soil water conditions are known. Its list is two ply hot mopped felts, 55 pound roll roofing, and 40 mil polymer modified asphalt. Also 60 mil flexible polymer cement, a 1\/8 inch fiber reinforced cement coating, and 60 mil liquid rubber.<\/p>\n<div class=\"pm__callout\">\n<p>Check the local amendment before you bid the cheap one. Minnesota amends this section, and its inspection handouts say dampproofing is no longer allowed on concrete or masonry foundations.<\/p>\n<\/div>\n<h2>What the exterior materials cost<\/h2>\n<p>Three lines carry the job, and the sheet membrane also needs its primer, which is not priced here. Every figure came off a seller or a maker.<\/p>\n<table class=\"pm__table\">\n<thead>\n<tr>\n<th>Material<\/th>\n<th>Unit<\/th>\n<th>Covers<\/th>\n<th>Listed price<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Bituminous dampproofing coating<\/td>\n<td>5 gallon pail<\/td>\n<td>350 to 500 sq ft a coat<\/td>\n<td>$57.99 to $62.99<\/td>\n<\/tr>\n<tr>\n<td>60 mil sheet membrane<\/td>\n<td>48 in by 50 ft roll<\/td>\n<td>200 sq ft<\/td>\n<td>$154.00 to $183.38<\/td>\n<\/tr>\n<tr>\n<td>Dimple drainage mat<\/td>\n<td>4 ft by 50 ft roll<\/td>\n<td>200 sq ft<\/td>\n<td>$172.82 to $235.87<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A 140 foot wall treated 8 feet high is 1,120 sq ft. Membrane alone is 6 rolls, $924 to $1,101. With the mat, $1,960 to $2,516. Coating is 5 to 7 pails, $289 to $441.<\/p>\n<h3>What we will not price<\/h3>\n<p>No publisher we accept states an installed price a foot, so none is printed here. Fluid applied coatings were looked at and dropped, because the maker coverage spreads are too wide to turn a pail into a rate.<\/p>\n<section class=\"pm__promo\">\n<h2>Turn the takeoff into a priced job<\/h2>\n<p>SimplyWise Cost Estimator turns a photo into an itemized estimate in about 6 seconds, with material and labor lines. Pricing is $29.99\/mo or $239.99\/yr, about $20\/mo on annual, with a 7-day free trial.<\/p>\n<p><a class=\"pm__btn\" href=\"https:\/\/swcostestimator.app.link\/ce-ai\" rel=\"noopener\" target=\"_blank\">SimplyWise Cost Estimator<\/a><br \/>\n<\/section>\n<h2>The footing drain the code asks for<\/h2>\n<p>Section R405.1 wants drains around foundations enclosing usable space below grade. The dimensions take off cleanly.<\/p>\n<p>Stone drains run 1 foot past the outside edge of the footing, and 6 inches above its top. A filter membrane covers them. Perforated pipe sits on 2 inches of washed rock and gets 6 inches over it. Group I soils, the well drained gravels and sands, are exempt.<\/p>\n<h2>What the labor side pays<\/h2>\n<p>Construction Laborers posted a May 2025 national median of $22.66 an hour and a mean of $25.02. The 25th percentile sits at $18.57 and the 90th at $37.54.<\/p>\n<p>The excavator seat pays more. Operating Engineers posted a median of $28.78 and a 90th of $48.60. Both are wages, not what you bill. The survey skips the self employed, and your rate carries burden, machine, and margin.<\/p>\n<h2>Price an exterior foundation job in four steps<\/h2>\n<ol class=\"pm__steps\">\n<li>\n<h3>Measure the run and the treated height<\/h3>\n<p>Tape the run and the height from grade to the footing top, then multiply.<\/p>\n<\/li>\n<li>\n<h3>Settle dampproofing against waterproofing<\/h3>\n<p>Read R406.1 and R406.2 against the local amendment and the soil report.<\/p>\n<\/li>\n<li>\n<h3>Count rolls and pails, and round up<\/h3>\n<p>Sheet and mat run 200 sq ft a roll before laps. A pail covers 350 to 500 sq ft a coat.<\/p>\n<\/li>\n<li>\n<h3>Add the drain, the stone, and your hours<\/h3>\n<p>Take pipe and rock off the R405.1 dimensions, then price hours off your own sheet.<\/p>\n<\/li>\n<\/ol>\n<div class=\"pm__next\">\n<h2>Keep reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.simplywise.com\/blog\/construction-calculators\/\">Construction Calculators<\/a><\/li>\n<li><a href=\"https:\/\/www.simplywise.com\/blog\/basement-waterproofing-cost\/\">Basement Waterproofing Cost<\/a><\/li>\n<li><a href=\"https:\/\/www.simplywise.com\/blog\/concrete-slab-cost-calculator\/\">Concrete Slab Cost<\/a><\/li>\n<\/ul>\n<\/div>\n<div class=\"pm__sources\">\n<h2>Sources<\/h2>\n<h3>Model code<\/h3>\n<ul>\n<li><a href=\"https:\/\/up.codes\/viewer\/texas\/irc-2021\/chapter\/4\/foundations\" rel=\"noopener\" target=\"_blank\">IRC 2021 Chapter 4, R405.1 and R406<\/a> (2026-09-11).<\/li>\n<li><a href=\"https:\/\/up.codes\/s\/foundation-waterproofing-and-dampproofing\" rel=\"noopener\" target=\"_blank\">R406, second adoption<\/a> (identical; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/safebuilt.com\/wp-content\/uploads\/2024\/04\/Foundation-Drainage-Waterproofing.pdf\" rel=\"noopener\" target=\"_blank\">Minnesota handout<\/a> (state amendment; 2026-09-11).<\/li>\n<\/ul>\n<h3>Maker coverage and roll data<\/h3>\n<ul>\n<li><a href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1426\/5084\/files\/TDS_BJ_6025_H18.pdf\" rel=\"noopener\" target=\"_blank\">Gardner-Gibson sheet H-18, 6025<\/a> (2026-09-11).<\/li>\n<li><a href=\"https:\/\/polyguard.com\/product\/650-sheet-membrane\" rel=\"noopener\" target=\"_blank\">Polyguard 650 Sheet Membrane<\/a> (48 in by 50 ft; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/www.emisupply.com\/plg-pf15-polyguard-polyflow-15-drainage-mat-4-x-50\" rel=\"noopener\" target=\"_blank\">Polyflow 15 mat<\/a> (4 ft by 50 ft; 2026-09-11).<\/li>\n<\/ul>\n<h3>Prices read live<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.bestmaterials.com\/detail.aspx?ID=15436\" rel=\"noopener\" target=\"_blank\">BestMaterials, 650 roll<\/a> ($154.00; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/polyguard.com\/product\/650-membrane\/212095\" rel=\"noopener\" target=\"_blank\">Polyguard, SKU 650L48<\/a> ($183.38; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/polyguard.com\/product\/polyflow-15-15p\/212133\" rel=\"noopener\" target=\"_blank\">Polyguard, SKU PG.PF.15<\/a> ($235.87; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/brinkmannhardware.com\/p\/roof-foundation-coating-non-fibered-027134602559-506410\" rel=\"noopener\" target=\"_blank\">Brinkmann&#8217;s, MPN 6025-9-30<\/a> ($62.99; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/elitsac.com\/p\/black-jack-gal-non-fibered-foundation-and-roof-coating-027134602559\" rel=\"noopener\" target=\"_blank\">Elitsac, same UPC<\/a> ($57.99; 2026-09-11).<\/li>\n<\/ul>\n<h3>Wages and product<\/h3>\n<ul>\n<li><a href=\"https:\/\/download.bls.gov\/pub\/time.series\/oe\/oe.data.0.Current\" rel=\"noopener\" target=\"_blank\">BLS OEWS May 2025<\/a> (47-2061, 47-2073; 2026-09-11).<\/li>\n<li><a href=\"https:\/\/apps.apple.com\/us\/app\/simplywise-cost-estimator\/id6670619664\" rel=\"noopener\" target=\"_blank\">SimplyWise Cost Estimator<\/a> (App Store 4.8; 2026-09-09).<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<section class=\"pm__faq\">\n<div class=\"pm__inner\">\n<h2>Common questions about foundation waterproofing cost<\/h2>\n<h3>Scope and code<\/h3>\n<details>\n<summary>What is the difference between dampproofing and waterproofing?<\/summary>\n<div>\n<p>The code treats them as two jobs. R406.1 dampproofing is a coating over parged masonry. R406.2 waterproofing is a rated membrane, required where severe soil water conditions exist.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Does this page cover interior basement systems?<\/summary>\n<div>\n<p>No. Sump pumps, interior wall sealer, and the excavation side are priced on our basement waterproofing cost page. This page is the exterior treatment only.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>How deep does the treatment have to run?<\/summary>\n<div>\n<p>From grade to the top of the footing, or 6 inches below the basement floor, whichever is higher. Both R406.1 and R406.2 say so.<\/p>\n<\/div>\n<\/details>\n<h3>Materials and price<\/h3>\n<details>\n<summary>What does foundation waterproofing cost in material?<\/summary>\n<div>\n<p>On a 1,120 sq ft wall, 6 rolls of 60 mil sheet membrane listed at $924 to $1,101 on September 11, 2026. With a mat, $1,960 to $2,516.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Why is there no installed price a foot here?<\/summary>\n<div>\n<p>Because no publisher we accept states one it is bound by. We price what you can count and leave labor to you.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Can SimplyWise price a foundation job from a photo?<\/summary>\n<div>\n<p>Yes. SimplyWise Cost Estimator turns a photo into an itemized estimate in about 6 seconds, with material and labor lines. Free to try, at $29.99\/mo.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/section>\n<section class=\"pm__final\">\n<div class=\"pm__inner\">\n<span class=\"pm__eyebrow\">Count it once, bid it once<\/span><\/p>\n<h2>Turn the takeoff into a signed job.<\/h2>\n<p>Snap a photo and get an itemized estimate in about 6 seconds. Free to try.<\/p>\n<p><a class=\"pm__btn pm__btn--lg\" href=\"https:\/\/swcostestimator.app.link\/ce-ai\" rel=\"noopener\" target=\"_blank\">SimplyWise Cost Estimator<\/a>\n<\/div>\n<\/section>\n<\/article>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"BlogPosting\",\n  \"headline\": \"Foundation Waterproofing Cost: Exterior Membrane, Coating, and Drain\",\n  \"description\": \"Foundation waterproofing cost for the exterior job. Set wall run, height and treatment to get area, what to buy, and a materials range from named listings.\",\n  \"author\": {\n    \"@type\": \"Organization\",\n    \"name\": \"SimplyWise\"\n  },\n  \"publisher\": {\n    \"@type\": \"Organization\",\n    \"name\": \"SimplyWise\",\n    \"logo\": {\n      \"@type\": \"ImageObject\",\n      \"url\": \"https:\/\/www.simplywise.com\/icon-512x512.png\"\n    }\n  },\n  \"datePublished\": \"2026-09-21\",\n  \"dateModified\": \"2026-09-21\",\n  \"mainEntityOfPage\": {\n    \"@type\": \"WebPage\",\n    \"@id\": \"https:\/\/www.simplywise.com\/blog\/foundation-waterproofing-cost\/\"\n  },\n  \"url\": \"https:\/\/www.simplywise.com\/blog\/foundation-waterproofing-cost\/\",\n  \"image\": [\n    \"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/46\/Senkrechte_Abdichtung.jpg\/1280px-Senkrechte_Abdichtung.jpg\"\n  ]\n}\n<\/script><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"HowTo\",\n  \"name\": \"How to Price an Exterior Foundation Waterproofing Job\",\n  \"step\": [\n    {\n      \"@type\": \"HowToStep\",\n      \"position\": 1,\n      \"name\": \"Measure the run and the treated height\",\n      \"text\": \"Tape the wall run, then set the height from finished grade to the top of the footing. Multiply for net wall area.\"\n    },\n    {\n      \"@type\": \"HowToStep\",\n      \"position\": 2,\n      \"name\": \"Settle dampproofing against waterproofing\",\n      \"text\": \"Read R406.1 and R406.2 against the local amendment and the soil report. That choice sets the whole material line.\"\n    },\n    {\n      \"@type\": \"HowToStep\",\n      \"position\": 3,\n      \"name\": \"Count rolls and pails, and round up\",\n      \"text\": \"Sheet and mat run 200 sq ft a roll before laps. A dampproofing pail covers 350 to 500 sq ft a coat, at two coats.\"\n    },\n    {\n      \"@type\": \"HowToStep\",\n      \"position\": 4,\n      \"name\": \"Add the drain, the stone, and your own hours\",\n      \"text\": \"Take off pipe and washed rock off the R405.1 dimensions, then price crew and machine hours off your own sheet.\"\n    }\n  ]\n}\n<\/script><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between dampproofing and waterproofing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The code treats them as two jobs. R406.1 dampproofing is a coating over parged masonry. 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Set the wall run, the treated height, and the treatment. Area, material, and cost update as you type. Pricing the dig? Estimate it from a photo in about six [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"foundation waterproofing cost","_yoast_wpseo_title":"Foundation Waterproofing Cost: Exterior Membrane and Drain","_yoast_wpseo_metadesc":"Foundation waterproofing cost for the exterior job. Set wall run, height and treatment to get area, what to buy, and a materials range from named listings.","_yoast_wpseo_linkdex":"72","_yoast_wpseo_content_score":"90","_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_canonical":"","inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9571","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>Foundation Waterproofing Cost: Exterior Membrane and Drain<\/title>\n<meta name=\"description\" content=\"Foundation waterproofing cost for the exterior job. 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