Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Estimate roofing material and labor cost from your squares and your own supplier's price per square.
Roofing material cost varies enormously by material type (asphalt shingles, metal, tile, wood shake all cost very differently) and by region, so this calculator never assumes a price -- it takes your own squares figure (sized with the Roofing Calculator or your own measurement) and your own supplied price per square.
Enter your roofing squares and the price per square your supplier or contractor has quoted, plus an optional labor cost if that's billed separately.
Material Cost = Squares × Price per Square
Total = Material Cost + Labor Cost
This is a materials estimate based on the numbers you enter, not a full roofing project quote -- tear-off of the old roof, disposal, decking repair, flashing, and permits are common additional costs a full roofing job may include, none of which are assumed here.
The price per square you enter drives the whole result, so it is worth understanding what it should include. A supplier may quote material only, while a contractor may quote an installed price that already bundles labor, tear-off, and disposal. If you enter an installed price and also fill in the labor field, you will count labor twice. Ask each quote to be broken into line items so you know whether you are comparing like for like.
Imagine a roof of 28 squares and a quoted material price of 120 per square. Material cost is 28 times 120, which is 3,360. Say a crew quotes 2,900 for labor. The total is 6,260. Now imagine a second quote where the contractor prices 350 per square installed. That is 9,800 for the same roof. The gap is not necessarily overpricing. The second figure may include tear-off, underlayment, flashing, and cleanup. Enter the installed price with labor set to zero to reflect that, and use the labor field only when a quote separates it.
Enter these in the labor or other-costs field if you know them, so your total is closer to a real budget.
Treat the output as a planning figure. Its best use is comparing quotes and spotting big gaps. Run the calculation with the low and high price you have received to see the range in total cost. It is also useful to keep a contingency, since discoveries during a roof job, such as damaged decking, are common. Many homeowners set aside a percentage of the total for this, but the right amount depends on the roof's age and condition, which a roofer can assess in person.
Asphalt shingles, metal roofing, tile, and wood shake all have very different material costs and installation labor requirements -- there's no single "roofing price" that applies across material types.
No -- add tear-off and disposal cost to the labor/other-costs field if you want it reflected in your total estimate.
Yes. If the price already includes installation, leave labor at zero. Only use the labor field when labor is billed separately from materials.
One square is 100 square feet of roof surface. Divide your sloped roof area by 100, and add waste. The Roofing Calculator can size this for you from footprint and pitch.
The calculator only multiplies what you enter. Quotes often include tear-off, disposal, flashing, underlayment, permits, and overhead. Ask for an itemized quote to see where the difference lies.
No. It is a rough planning tool. For an insurance claim or financing, use a written quote from a licensed contractor.