6 Questions (and Answers) About Damages on a Spray Foam Roof

Spray foam roofs can be damaged — here are 6 common damage scenarios and what to do about each.

Q1: What if HVAC equipment installation damages the foam?

A: Clean the damaged area, apply compatible sealant or patch coating to restore the waterproof surface, and verify no foam is exposed. Schedule proper repair before the next inspection.

Q2: What if hail damages the topcoat?

A: Inspect for actual foam penetration. If only the topcoat is damaged, apply compatible coating over the damaged areas. If foam is exposed, repair immediately to prevent UV degradation.

Q3: What if a contractor working on the roof punctures through the foam?

A: Identify the full extent of damage. If the puncture goes through to the substrate below, it creates a potential leak path — repair with compatible sealant or foam patching material promptly.

Q4: What if overspray from nearby construction gets on the foam?

A: Most contaminants can be cleaned or removed from cured foam without compromising the system. Contact your coating manufacturer for compatible cleaning recommendations.

Q5: What if blisters appear in the foam?

A: Blisters indicate wet insulation beneath the foam — the most serious issue. Investigate the source of moisture, remove the blistered foam section, replace wet insulation, and re-foam the area.

Q6: What if the topcoat is wearing through in spots before the warranty expires?

A: This is a warranty claim. Contact the manufacturer directly. Early topcoat wear may indicate insufficient initial application thickness — document with mil gauge measurements before contacting the manufacturer.