Is this roof quote normal?
Roofing quotes vary more than almost any other home project, and most of that variation is real rather than dishonest — because a roof bid bundles measurement, materials, tear-off, hidden repairs and warranty into one number. Three bids are only comparable once you can see the roof size, the layers coming off, the material system and what happens if bad decking turns up.
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What most people miss
Squares, layers and decking decide the price
Roofing is priced per square (100 square feet), and the three things that move a bid most are how many old layers come off, whether any decking needs replacing, and what happens at the flashing details. A quote that names a per-square price and a per-sheet decking rate can be compared to any other; one with a single total cannot.
How this price is built
Roof size in squares
Roofing is measured in squares (100 square feet), adjusted for pitch and complexity. Every bid should state the square count it's based on. If two bids differ on squares, they're measuring differently and no price comparison is meaningful yet.
Pitch and complexity
A steep roof needs more safety equipment and slows work down. Valleys, dormers, skylights and chimneys each add detail work. Two roofs of identical area can be very different jobs.
Tear-off and layers
How many existing layers come off drives both labour and disposal. Roofing over an existing layer is cheaper and sometimes permitted — it's also a different product with a different lifespan.
Decking and hidden repairs
Rotten sheathing is only visible after tear-off. A good bid states a per-sheet price up front so this doesn't become an open-ended charge mid-job.
The material system
Shingle line, underlayment, ice-and-water shield, drip edge, ridge and soffit ventilation, and pipe boots. Manufacturer warranties often require the whole system, so a cheaper bid may be omitting components rather than pricing them lower.
Flashing
New flashing at walls, chimneys and valleys versus reusing the old is a common and consequential difference between bids. Most leaks start at flashing.
Permit, disposal and warranty
Dumpster and disposal, the permit, and the workmanship warranty (separate from the manufacturer's) are all real line items with real costs behind them.
What makes a quote high
No square count
Without a stated measurement, you cannot compare bids or check the material quantities against the price.
Open-ended decking replacement
'Bad wood replaced at additional cost' with no per-sheet rate is the most common way a roof price grows after work starts.
Storm-chasing urgency
Pressure to sign today, an insurance claim promised as a certainty, or a deposit demanded before any paperwork are all reasons to slow down.
Full replacement for localised damage
Sometimes correct, sometimes not. Ask specifically whether a repair or partial replacement was considered, and why it was ruled out.
Upgrades presented as requirements
Premium shingle lines and extended warranties are legitimate products. They should be a choice you made, not an assumption inside the number.
A large deposit
Some deposit is normal for material ordering. A large share of the total before any work begins is worth questioning, and in some places it's regulated.
Itemised versus vague
A quote you can evaluate looks different from one you can't. This is what to look for, line by line.
| Item | A quote you can judge | A quote you can't |
|---|---|---|
| Measurement | Square count, pitch and complexity stated | No measurement anywhere on the bid |
| Tear-off | Number of existing layers being removed | 'Remove old roof' |
| Decking | Per-sheet price for replacement, agreed up front | 'Additional cost if needed' |
| Materials | Named shingle line plus underlayment, ice shield, drip edge, vents, boots | 'Architectural shingles' |
| Flashing | States new flashing, or explicitly reusing existing | Not mentioned |
| Warranty | Workmanship years stated separately from manufacturer coverage | 'Fully warrantied' |
Questions to ask before you approve
- How many squares is my roof, and what pitch did you measure?
- How many layers are coming off, and is disposal included?
- What's the per-sheet price if you find bad decking?
- Which exact shingle line, underlayment and ice-and-water shield are included?
- Is all flashing being replaced, or reused?
- Is ridge and intake ventilation included, and does the manufacturer warranty require it?
- Is the permit included, and at cost?
- How many years is your workmanship warranty, separate from the manufacturer's?
- What deposit do you require, and what does it cover?
- Are you licensed and insured here — can I see the certificate?
Ask every roofer this
Copy these lines as they are. Politeness plus specifics gets answers.
- 1.“How many squares, and what's your price per square?”
- 2.“How many existing layers are being torn off, and is disposal included?”
- 3.“What's the per-sheet price if decking needs replacing, and who decides?”
- 4.“Which flashing, valley, vent and drip-edge components are being replaced versus reused?”
- 5.“What underlayment and ice barrier are specified, and what's the workmanship warranty?”
When a high price is legitimate
A higher-than-expected price isn't automatically a bad one. These are the situations where it's usually justified.
- A steep, complex or multi-storey roof with valleys, dormers or skylights.
- Two or more existing layers to tear off and dispose of.
- A full manufacturer-certified system including ventilation and ice-and-water shield.
- All flashing replaced rather than reused.
- Structural or decking repair genuinely found and documented.
- A long workmanship warranty from an established, insured contractor.
Not sure if your price is fair?
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Common questions
Why are my three roof quotes so far apart?
Almost always because they aren't quoting the same job. Different square measurements, different layer counts, one reusing flashing and another replacing it, one including ventilation the manufacturer warranty requires. Line the three up component by component before comparing totals.
Should I take the cheapest roof bid?
Not on price alone. A low bid can mean omitted system components, reused flashing, no workmanship warranty, or an intention to make it up on decking charges once the roof is open. Understanding why a bid is low matters as much as the number.
Is roofing over the old layer a bad idea?
It's cheaper and sometimes allowed by local code, but it hides the decking, adds weight, and typically shortens the life of the new roof. If a bid includes it, you should be told that's what you're buying.
What does What's Normal? check on a roofing quote?
It pulls out the line items, checks whether the measurement, tear-off scope, material system, flashing and warranty are actually specified, flags anything that looks high relative to typical pricing, and tells you which missing details are stopping a confident assessment.
Keep reading
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This guide explains how pricing is structured in general terms. It deliberately avoids quoting dollar figures, because fair pricing depends on your location, scope and market. Educational information only — not professional advice. See our disclaimer.