Evaluate the complete low-slope assembly
Commercial flat roofs include foam, coated assemblies, single-ply membranes, modified bitumen and mixed systems. The visible surface matters, but so do slope, drainage, substrate, insulation, flashings and every interruption through the field.
Condition and diagnosis
A leak near a ceiling location does not automatically identify the roof-side source. Water can move across deck or insulation before it appears indoors. Inspection should map drains, scuppers, seams, curbs, walls and prior repairs before the repair boundary is set.
Repair, restoration or replacement
Restoration can be practical when the existing assembly is dry, stable and compatible with the proposed system. Broad wet insulation, unstable substrate, widespread loss of adhesion or details that cannot be integrated can make replacement more responsible.
What a complete proposal should define
A complete proposal should define preparation, moisture assumptions, drainage corrections, penetration and edge work, materials, thickness or reinforcement where relevant, equipment coordination, access, protection and closeout. That is the level needed to compare commercial bids honestly.
- Moisture and substrate condition
- Drainage and ponding history
- Detail and penetration failures
- Remaining system compatibility
