“Flat roof” describes a shape, not a material
Several roof systems can be used in low-slope applications, with different materials, seams, and attachment requirements. Ask which system is being proposed for your roof and what makes it suitable.
If the low-slope section connects to a steeper roof, a wall, or a covered outdoor space, include that transition in the assessment. A proposal should explain the full area being addressed, including adjoining details.
Drainage deserves a clear explanation
Low-slope roofs shed water more slowly than steep roofs. Building-science guidance identifies slope, drains, scuppers, and other drainage elements as parts of the water-management approach.
Tell the assessor where you have observed standing water, overflow, or recurring stains. Ask what the proposed work does about drainage and whether further evaluation is needed. Covering the surface does not explain the route water should take.
- Existing roof material and underlying condition
- Seams, edges, and wall transitions
- Drains, scuppers, or gutter connections
- Pipes, equipment, and other penetrations
- Areas requiring further investigation
- Proposed material and installation documents
Choose the scope from the findings
A localized repair, a suitable restoration system, and replacement serve different purposes. Ask which condition each option addresses and what would remain outside the scope.
If a coating is suggested, ask how suitability will be established, including existing moisture concerns and adhesion. If replacement is proposed, ask what will be removed and how underlying components will be evaluated.
Keep use and access in the plan
Describe how the area below is used and which access routes need to stay available. Let the team know about rooftop equipment, recent work by other trades, and any known problem areas.
After the work, keep the installed-system information and care requirements together. Future roof access, equipment changes, and maintenance should be coordinated with the applicable instructions. An organized record helps the next assessment begin with facts rather than a fresh set of assumptions.
Your questions, answered
Can regular roof shingles be used on any roof slope?
No. Roof coverings have application requirements, including slope limits. The proposed product must be suitable for the roof’s actual conditions.
Does ponding water mean replacement is required?
It calls for assessment of drainage and the roof’s condition. The appropriate scope depends on those findings.
Can a flat roof be coated?
Some existing systems may qualify after the necessary assessment, testing, and preparation. Suitability must be established for the particular roof and coating.
