First, What a "Square" Actually Is
When a roofer says your roof is "24 squares," they're not being cryptic on purpose — a square is 100 square feet of roof surface. It's the industry's standard pricing unit, and understanding it is the fastest way to decode a quote. A 24-square roof is 2,400 square feet of actual sloped surface, which is always more than your home's footprint because pitch and overhangs add area.
Why this matters to you: when quotes are expressed per square, you can compare contractors apples-to-apples and sanity-check the total against published bands. When a quote hides the per-square math, you can't. Guess which approach contractors who pad prices prefer.
Typical Published Per-Square Bands
For a full replacement — tear-off, materials, labor, the works — published averages commonly run:
| Material | Commonly Quoted Per Square (installed) |
|---|---|
| 3-tab asphalt | $350–$550 |
| Architectural asphalt | $450–$750 |
| Corrugated/ribbed metal | $550–$950 |
| Standing seam metal | $900–$1,800 |
| Cedar shake | $800–$1,500 |
| Clay/concrete tile | $1,000–$2,000+ |
These are orientation bands, not promises — your region, roof, and the contractor's backlog all move the number. Our cost calculator turns your roof's actual dimensions into a personalized band. For material-by-material depth, see the materials hub.
What's Inside a Per-Square Price
A legitimate per-square price for asphalt bundles roughly this:
- Tear-off and disposal — labor to strip the old roof plus dumpster and dump fees. More existing layers = more cost.
- Materials — shingles are the headline, but underlayment, ice-and-water shield, drip edge, starter strips, ridge caps, flashing, and a lot of nails ride along. Materials are typically around a third to forty percent of the job.
- Labor — usually the biggest slice. A practiced crew can do a simple walkable roof in a day or two; complexity stretches that fast.
- Overhead and margin — insurance, licensing, trucks, warranty reserves, and profit. Real businesses have real overhead; the ones without insurance are the ones to fear.
The Adders That Stack on Top
Here's where identical-sounding quotes diverge. Contractors commonly apply per-square adders for:
- Steep pitch — anything past roughly 6/12 slows crews and triggers fall-protection setup; very steep roofs can add a meaningful percentage to labor. More in our pitch guide.
- Second-story or difficult access — material staging gets slower and riskier.
- Complexity — valleys, dormers, skylights, and chimneys all mean cutting, flashing, and detail work.
- Decking replacement — quoted per sheet of plywood, discovered at tear-off. Make sure the per-sheet price is in writing before the job starts, or you've handed the contractor a blank check.
- Multiple tear-off layers — a second old layer adds labor and disposal weight.
A quote that shows these as separate line items is a quote you can negotiate. A quote that buries them in one number is a quote you can't.
Use the Math Before They Do
Before any sales visit, do two things. First, get a rough square count: estimate your footprint, then add for pitch (our calculator handles this). Second, look your roof over from the ground — a pair of inspection binoculars shows you missing shingles, rusty flashing, and sagging lines without anyone leaving the driveway. We never recommend homeowners walk their own roof; tear-off crews wear harnesses for a reason.
Then collect at least three itemized quotes and compare per-square prices line by line against our fair quote checklist. If you want quotes from contractors who'll show their math, start your quote request here — knowing what a square is, and what's inside one, means the guy in the truck no longer has the only calculator that matters.
FAQ
How many squares is a typical house roof?
A 1,500–2,000 sq ft single-story home commonly works out to 17–25 squares once pitch and overhangs are counted. Two-story homes have smaller roof footprints relative to living space, so square counts vary a lot — measure or use a calculator rather than guessing.
Does the per-square price include tear-off?
It should, and the quote should say so explicitly. Some lowball quotes price the new roof only and treat tear-off, disposal, and decking as "extras" that appear later. Ask every contractor: is tear-off and disposal in this number?
Why is one contractor's per-square price so much lower?
Common reasons: thinner underlayment, reused flashing, no decking allowance, uninsured labor, or a plan to make it up in change orders. Occasionally it's just a slow week. Compare what's itemized, verify license and insurance, then decide.
Can I save money buying the shingles myself?
Usually not. Contractors get supplier pricing, warranty registration often expects contractor-installed bundles, and you'd own every delivery and shortage problem. Your leverage is in comparing complete itemized quotes, not playing materials broker.
The Square Report
Cost-band moves, post-storm scam patterns, and calculator updates — one email a month, no pitch.