Roof Replacement Cost: Price Per Square and Full Job in 2026

How the roof replacement cost calculator works

Roof replacement cost is a per-square problem. A square is 100 sq ft of roof surface, not ground. The calculator multiplies your footprint by the slope factor for the pitch and shows the square count first.

It then buys whole bundles at published supplier prices, weighs the tear-off, and adds crew wages at your hours. Our roofing squares calculator carries the full slope factor table and the three bundle exceptions.

What a roof costs per square by shingle

Listed prices at two named suppliers, captured August 28, 2026 and rechecked September 2, 2026: Sutherlands, which prices each store separately across 13 states, and McCoy’s.

Three bundles cover a square, so architectural material lands near $114 to $150 a square. The same Owens Corning Oakridge bundle listed at $42.97 in Fredericksburg, Texas and $49.99 in Salt Lake City the same day. Quote roof replacement cost against your own yard.

SimplyWise Cost Estimator pulls material pricing from the nearest Home Depot to the zip code registered in your app.

The labor half of roof replacement cost

Stripping the old layers is construction laborer work, and BLS put that median at $22.66 an hour in May 2025. Nailing the new roof is roofing work, at a $27.95 mean.

Those are wages, not the rate you bill. Our roofing contractor pricing guide builds the rate that covers it.

Crew hours stay yours. No published production rate for squares per hour cleared our sourcing bar, so the calculator asks.

Tear-off, dump fees, and what the calculator skips

The Asphalt Roofing Manufacturers Association puts single layer tear-off debris at 2.5 pounds per square foot of roof area, which is 250 pounds, an eighth of a ton, per square. Fairfax County, Virginia charges $109.00 a ton for shingles on its FY 2027 residential schedule.

Both figures are single source, so put your own transfer station rate in the dump field. That roof, one layer, is 2.24 tons.

Not in the calculator: decking repair, ridge vent, valley metal, starter and cap, pipe boots, step flashing.

Run the roof replacement cost estimate in this order

1. Measure the footprint, then apply the pitch

   Multiply each plane’s ground footprint by the slope factor. A 6/12 is 1.118.

2. Pick the shingle before you count bundles

   Three per square is the strip and laminate answer.

3. Count the edge separately

   Eaves and rakes are linear feet for drip edge, not square count.

4. Add your hours, your dump rate, then your overhead

   The calculator stops at wages and one county’s tip fee.