Understanding a quote
How to read a roofing estimate, including the lines that are missing
A roofing estimate is a specification with a number attached. Read as a specification, two quotes that seemed impossible to compare usually turn out to be describing two different jobs.
What a complete scope contains
| Line | What it should say | Why it matters |
|---|---|---|
| Quantity | The square count, and the pitch of each roof area | Everything else scales from this. No square count, no comparison |
| Tear-off | How many layers are being removed and from which areas | A second layer is real extra labor, weight and disposal |
| Deck inspection and repair | That the deck will be inspected, and a stated rate per sheet for replacement | This is the one genuine unknown. Silence here becomes a conversation on the day |
| Ice and water shield | Where it goes and how far — eaves, valleys, penetrations, wall lines | The freeze-thaw layer. The most consequential omission on a Cincinnati scope |
| Underlayment | Type and coverage across the remaining deck | Synthetic over felt is standard now; the line should still exist |
| Drip edge | Eaves and rakes, with the profile named | Edge metal is the wind detail, and it is frequently left off |
| Starter course | A purpose-made starter at eaves and rakes | Cut-up field shingles as starter put the adhesive in the wrong place |
| Field shingles | Product line, and the nail count per shingle | The nail count is the line that tells you whether this is a specification or a sales sheet |
| Flashing | New step, counter, apron, valley and chimney flashing — or explicitly which is being reused | Reused flashing is the most common hidden shortcut on a replacement |
| Penetrations | New pipe boots and vent flashings, counted | Boots are the shortest-lived component on a roof |
| Ventilation | Ridge vent length, slot cut, intake work and baffles | Exhaust without intake is not ventilation — see attic ventilation |
| Ridge cap | Purpose-made cap, and the length | Cut three-tab used as cap is a visible corner cut and a wind weakness |
| Clean-up and disposal | Dumpster, magnetic sweep, property protection | A tear-off scatters fasteners across the whole property |
| Permit | Whether it is included and who pulls it | Jurisdictions across this metro differ, and it is worth being explicit |
| Warranty | Manufacturer material coverage and workmanship coverage, separately, with terms | They are two different things and they are often conflated |
| Payment schedule | Deposit, stages and final payment terms | A large payment before material is delivered is worth questioning |
Print two quotes and lay them side by side against that list. Almost always, the gap between them turns out to be four or five of these lines rather than a difference of opinion about the same work.
The lines that are missing
An omission is not necessarily dishonest. Some roofers include ordinary items in a lump and assume you know. The problem is that you cannot tell an inclusive lump from an exclusion by looking, and neither can the next roofer you compare it against.
- "Install new roof" as a single line. Nothing is verifiable, nothing is comparable, and every later disagreement is your word against theirs.
- No deck repair provision. The deck is the one thing nobody can see in advance. A scope with no stated rate has deferred the negotiation until the crew is on the roof and the house is open.
- No mention of flashing. Assume reused unless it says otherwise, and ask.
- Ventilation absent. If the attic has a ventilation problem, a replacement is when it gets fixed. If it is not on the scope, it is not being fixed.
- No nail count. Six nails where six are specified is a manufacturer requirement for the higher wind ratings, and it is either in the document or it is a hope.
- "Subject to inspection" attached to everything. A scope entirely qualified is not a scope.
Reading the contract half
- Start and completion terms
- Roofing is weather-dependent and dates move. What should still be there is a stated window and a mechanism for telling you when it changes.
- Change orders
- How additional work is authorized and priced, in writing, before it happens. The deck repair rate is the everyday example.
- Workmanship warranty
- Its length, what it covers, whether it transfers on sale, and who honors it. A workmanship warranty is only as good as the company standing behind it.
- Lien waiver
- Confirmation that suppliers and subcontractors have been paid, so a supplier cannot pursue your property over a debt that is not yours. Worth asking for at final payment.
- Insurance-contingent clauses
- Language that commits you to the contractor if a claim is approved. Read it carefully. Signing one at the front door before an adjuster has scoped anything is how people end up committed before they have decided.
A deposit that is a large fraction of the job before any material has arrived deserves a straight question about why. Normal practice varies, and "our supplier requires it" is checkable.
If the work is going through a claim
A carrier scope is a line-item document produced in estimating software, and it is written in the same vocabulary as everything above. Compare it to the roof rather than to the quote: the squares, the pitch, the layers, the flashings, the ventilation and the edge metal. Missing line items are ordinary, and they are resolved through a supplement rather than an argument — see how to file a roof claim and meeting the adjuster.
A short list to take into the conversation
- How many squares, and how did you measure them?
- How many layers are coming off, and how do you know?
- What happens, and at what rate, if the deck is bad?
- How far up from the eave does the ice and water shield run?
- Is all the flashing new? If not, which parts are being reused and why?
- How many nails per shingle, and what starter product at the eaves and rakes?
- What is the intake ventilation, not just the exhaust?
- What is the workmanship warranty, in years, and does it transfer?
Want a written scope in this format, with a square count you can check?
Request a free inspectionShould I always get three quotes?
Two or three detailed scopes is plenty, and it is worth more than five totals. What you are looking for is not the lowest number but the differences between the documents, because the differences are the decisions being made about your roof.
One quote is much cheaper. What is usually missing?
In order of frequency: reused flashing, ice and water shield at the eaves only or not at all, no ventilation work, no starter or drip edge, a lower nail count, and no deck repair provision. Any of those is a legitimate scope difference and none of them is visible once the roof is finished.
Is a verbal quote ever acceptable?
For a small repair, sometimes. For a replacement, no. The document is the only thing that survives the conversation, and it is what protects both sides when something on the roof turns out to be different from what was expected.
What if I do not understand a line?
Ask, and judge the answer. A roofer who can explain why a line is there in terms of what it does on the roof is a roofer who wrote the document deliberately. The roof anatomy drawing names every component, if you want to look one up first.
All work is performed by licensed and insured local roofing professionals.