How to Write Winning Estimates for Roofing Jobs

A roofing estimate carries more legal and financial weight than most trade estimates — the dollar amounts are bigger, and there's more that can go wrong once the tear-off starts. Here's how to write one that protects you and wins the job.

Inspect thoroughly, not just from the ground

Satellite/aerial measurement tools (like EagleView) are useful for quick square footage and material estimates, but they don't replace an in-person inspection. Walk the roof (safely) or at minimum get on a ladder to check for soft spots, existing damage, flashing condition, and ventilation — details that change your price and that a customer will expect you to have noticed.

Document the current condition with photos

Photograph problem areas — damaged shingles, deteriorated flashing, moss/algae, visible sagging — before you touch anything. This protects you if there's ever a dispute about what condition the roof was in before you started, and it's useful if the customer is also filing an insurance claim.

Itemize materials by brand and product line

Name the shingle brand and product (e.g., GAF Timberline HDZ, Owens Corning Duration) rather than just "architectural shingles." Specify underlayment type, ice-and-water shield placement (eaves, valleys, and anywhere required by code in your climate), flashing, and ventilation components. This level of detail differentiates you from competitors bidding vague scopes, and it sets clear expectations for warranty coverage.

Include a decking contingency clause

Since you often can't see the state of the decking until tear-off, include a clear per-sheet rate for decking replacement if it's needed, agreed to upfront rather than negotiated mid-job when the customer has less leverage to walk away and you have less leverage to demand payment.

Spell out warranty terms

Separate the manufacturer's material warranty from your own workmanship warranty, and state both clearly — including duration and what voids them (e.g., improper future roof penetrations by other contractors).

Cover permits and cleanup

State who's pulling the permit and who's paying the fee. Clarify what happens to the old materials (dumpster on-site, daily cleanup, magnetic nail sweep of the yard) — homeowners care about this more than contractors sometimes expect.

Give a payment schedule that matches your cash flow

A common structure: deposit at signing (to cover material ordering), a progress payment at tear-off/dry-in, and the balance at completion and final inspection. This protects your cash flow against roofing's high material costs.

Set a realistic timeline with a weather clause

State an estimated start date and duration, with a clear note that weather (rain, high wind, ice) can shift the schedule. Customers who understand this upfront are far less frustrated by a weather delay than customers who weren't told to expect one.

Present it professionally

A detailed, itemized, well-formatted estimate signals competence in a trade where customers are often nervous about being oversold. Sending it quickly after the inspection — same day if possible — also matters; roofing customers frequently get multiple bids and respond to whoever follows up first.

ServiQ lets you build itemized estimates with saved materials and pricing on-site, so you can send a professional, detailed bid before you've even left the driveway.