Roof Problems · For owners & managers
Wet Roof Insulation Under Commercial Membranes
Insulation under a flat roof can soak up water from small leaks for years before anyone sees a drip.
Why it matters
Wet insulation insulates poorly, adds weight, and can damage the deck.
Finding it
Infrared, moisture meters, and core cuts.
Decisions
Small wet areas can be replaced. Large areas often point to replacement over coating or recover.
Common questions
- Does it dry out?
- Usually not under a sealed membrane.
- Can I coat over it?
- Wet areas should be removed first.