A replacement estimate is a useful next step when you're considering a new roof. It isn't a diagnosis. Before that conversation, separate what you've noticed, what someone has told you, and what still needs explaining. You can use this guide whether you decide to replace the roof, pursue a repair, or keep researching.
Part 1 · Your roof
Understand the condition before choosing the work
Look from the ground
Stay off the roof and leave climbing to a professional. From a safe place on the ground, look for missing, cracked, or curling shingles, bare patches, and a roofline that appears to sag. Inside, note water stains or signs of leaking. These observations call for an assessment; they don't establish that replacement is necessary.
Age adds context, but asphalt shingles have no single expiration date. Materials, weather, and other conditions affect how a roof holds up. GAF's guide to when a roof needs attention explains these signs and why homeowners should observe from the ground.
Ask what a repair would solve
If you've had the same area patched several times, bring that history to the conversation. Ask the person assessing the roof to explain their recommendation in terms you understand:
- What is causing the problem, and where is it happening?
- Is the issue limited to one area or present across the roof?
- What would a repair address, and what would remain?
- What supports the recommendation to replace rather than repair?
Ask them to show you what they found using photographs or a written explanation. If two recommendations differ, ask each company to explain the difference. You don't need to describe the job as a replacement before anyone has assessed it.
Part 2 · The company and proposal
Compare the work behind the price
Know who would do the job
Ask for references from similar completed projects and contact them. Confirm the business identity and how to reach the company. Ask who would supervise your project, who would be on site, and how you would raise a question during the work. Verify the permits and coverage your job needs.
Read warranty terms and ask who is responsible for responding to a problem. The National Roofing Contractors Association's contractor selection guidance covers references, supervision, written proposals, payment procedures, and warranties. A referral from this site does not replace your own checks.
Put proposals side by side
Roof size, materials, pitch, and project location can affect the estimate. Removal of old roofing, disposal, labor, and other project costs also need to be understood. GAF's explanation of roof replacement costs describes these factors and recommends an itemized breakdown.
Ask each company to make the scope clear in writing. Use the same questions for each proposal:
- Work and materials: What is being removed, replaced, or retained? Which products are included?
- Additional work: What is excluded? How would an unexpected issue be priced and approved?
- Site and schedule: When would work begin and finish? Who handles disposal and cleanup?
- Payment: What is due, when is it due, and what marks completion?
- Warranty: What does each warranty cover, who provides it, and what conditions apply?
When a proposal is vague, request the missing detail before comparing totals. Keep your questions and the company's written answers together, so you can see which uncertainties have been resolved.
Before you request an estimate
Make a short note you can use with every company. Include your property's ZIP code, the roof's approximate age if known, what you've noticed, and previous repair dates. Have any existing proposal available so you can ask about differences in scope.
Choose the questions you need answered first. For example: “I want to understand why replacement is recommended,” or “I'm comparing replacement proposals and need to understand what's included.” Ask how the assessment works and whether a visit or assessment has a charge.
If you're considering hiring a company for whole-roof replacement, you can use the two-question check below. If you only need a repair, contact a company that handles repairs. Reading this guide doesn't commit you to requesting an estimate or hiring anyone.