Low-slope roofing
A low-slope roof needs more than a white surface
Low-slope roofs move water slowly and contain many details: drains, curbs, seams, equipment, and edges. A coating may extend the life of a sound roof, but drainage and trapped moisture must be understood first.
01 / Evaluate
Drainage and moisture drive the decision
The team should identify the membrane, inspect the attachment and details, and investigate suspect wet areas. Standing water and blocked drains affect both repairs and coating selection.
- Roof membrane and existing repairs
- Drains, scuppers, and ponding areas
- Wet insulation or trapped moisture
- Equipment curbs, seams, and perimeter edges
02 / Plan the work
Build a system around the existing roof
Preparation can include localized membrane repairs, wet-area replacement, cleaning, adhesion testing, primer, and reinforced details. The coating is selected only after the substrate is known.
- Remove unsound material
- Correct repairable drainage issues
- Test adhesion when required
- Follow the system specification
03 / Know the limit
“Flat” does not mean one coating fits all
TPO, modified bitumen, built-up roofing, and other surfaces have different preparation and compatibility needs. A coating choice should follow the roof assessment.
Questions and answers
Questions about Low-slope roofing
Roof condition determines the recommendation. An evaluation can answer questions specific to your building.
Check my roof →Can a roof with ponding water be coated?
Possibly, depending on the roof and coating system. Persistent ponding must be evaluated, and drainage problems should be addressed where practical.
Does the old roof stay in place?
The sound portions may stay. Wet or damaged areas can require removal and replacement before restoration.
Can a coating be applied over any membrane?
No. Each substrate needs a compatible system and proper preparation. Some roofs do not qualify for coating.
Before you decide
Can your roof be restored instead of replaced?
Tell us about the roof and its current problems. Higher Roof Solutions can help determine whether this approach fits.