What should you budget?
Choose the product and record existing conditions. Ask qualified providers to review removal or retention boundaries, supports and documentation.
Membrane conversions require actual complete systems and retained supporting layers assessed. Storm-damage work requires documented findings and product-specific repair or replacement boundaries. No basic asphalt rate or universal conversion premium has been substituted.
This scope needs a specific assessment before a numeric price can be useful.
Use the planner above to choose the work you actually want, enter your area or quantity and identify your project ZIP. The result shows a starting target alongside the wider planning range. For ZIPs we can resolve, the model uses a disclosed state-level regional price factor. The target is a budgeting aid, and actual contractor proposals depend on specifications and site conditions.
Compare complete modified-bitumen-to-TPO scopes
Use matching products and measured quantities across proposals. Identify preparation, supporting layers, accessories, edges and restoration. Keep unresolved moisture and other concealed conditions explicit.
What to include in your first quote request
Share references and available records. Ask who verifies suitability and coordinates approvals, underlying repairs and complete installation and handover work.
What changes the cost of this project?
- Measured roof surface and pitch
- Tear-off layers and decking condition
- Flashing, ventilation and access
Do not use the home floor area as the roof measurement. Pitch, overhangs and roof shape change the surface area. Collect photos from a safe location and ask for a measured proposal. A leak needs diagnosis; replacing a visible patch may leave the actual entry point untreated.
Build a scope that contractors can price
Make a short list of the work you want included and photograph the existing condition. Record approximate dimensions, access restrictions and anything you want to retain. Keep product names or inspiration images with the brief, but let the installer confirm final dimensions before anything is ordered. This gives every bidder the same starting information.
Decking repairs, structural work, complex access and specialty roof systems can exceed the benchmark.
Ask for unknown work to be identified as an allowance or a unit-priced repair. Before accepting a change, request the reason, the price and the effect on the schedule in writing. Set a separate contingency based on the age and condition of the home and the uncertainty the contractor identifies, rather than treating every possible repair as already included.
Choose the contractor as carefully as the materials
Reviews can help you find candidates, but a star rating cannot verify the scope, credentials or availability for your home. Ask about projects similar to this one and check current licensing where required, insurance and recent references. Confirm who supervises the work and which trades are involved.
- Ask how decking damage will be priced if found during tear-off.
- Compare underlayment, flashing and ventilation specifications.
- Separate workmanship coverage from the material warranty.
Compare written proposals using the same checklist
| Ask each contractor | What to look for |
|---|---|
| Scope and materials | Named products, quantities and exclusions |
| Permits and inspections | Who obtains approvals and schedules checks |
| Timeline | Start conditions, delivery dependencies and completion stages |
| Payment and changes | Written milestones and approval for extra work |
| Warranty and handover | Workmanship terms, product documents and contact details |
Before the first visit, ask whether the on-site quote is free and whether design work or investigative work has a separate fee. Remodaro’s optional matching request is free for homeowners. After you submit your project and phone number, we can review availability and look for up to three suitable contractors. A match or visit needs confirmation before it is arranged.
Common planning questions
Does modified-bitumen-to-TPO wording identify one universal removal and installation package?
No. Assess the actual roof and complete proposed assembly.
Can I start with a smaller project?
Yes. The roofing planner includes focused work as well as larger projects. Compare the intended scope with another option before committing. Inspection-dependent work gets a project brief so a broad remodel price is not mistaken for a repair quote.
How does my ZIP affect the estimate?
We look up the city and state associated with the ZIP. Where a regional factor is available, we apply the documented state price index as a planning proxy. It measures general price differences, not actual contractor bids in your neighborhood. Scope, access and the condition of your home still need an on-site evaluation.
Do I have to hire a contractor through Remodaro?
No. You can keep the estimate and checklist. The optional phone form requests help reviewing local contractor availability, and there is no obligation to accept a proposal.
Plan your project with a clearer starting point.
Get my personalized plan →Homeowner reference — GAF roof-system documentation library. General manufacturer background. Confirm documentation for the actual proposed products and complete retained assembly; this reference is not a conversion quote or a Remodaro affiliation.