Name the change precisely
Ask whether the option changes the membrane, insulation, cover board, attachment, warranty terms, or several items. A label such as “premium” is not a specification. Record the stated change in ordinary language and ask for the supporting product or assembly information.
| Ask | Look for |
|---|---|
| What changes? | A named component or scope revision |
| Why here? | A reason related to this building or proposed system |
| What supports it? | Relevant product, assembly, or written warranty information |
| What does it cost? | The actual difference in the quoted totals |
Ask why it is proposed for this property
The useful question is what requirement or project need the change is intended to address. Do not turn a thicker membrane or a different layer into invented extra years of service. Claims about performance, coverage, or energy savings need the applicable supporting information and conditions.
Keep price difference separate from value
The worksheet shows the arithmetic between two supplied totals. Deciding whether the option is worthwhile also needs the scope, rationale, and written terms. If several components change, ask whether the contractor can explain those changes separately even if the option has one combined price.
Questions to take with you
- Replace upgrade labels with named changes.
- Ask for a property-specific rationale.
- Avoid assumed lifespan or savings calculations.
Use the two-option worksheet to preserve the amounts and your unresolved questions together.
Compare two quoted TPO optionsSources and scope
GAF TPO roofing systems overview · GAF single-ply roofing systems
Prepared September 13, 2026. The linked primary resources provide technical or official context. Examples are illustrative, not completed EaseRoofing projects. Guidance does not replace an assessment or the appropriate professional and permitting process for your property.