Spray Foam Roof Damage

When a roofing contractor sprays foam down it s usually about 1 5 inches thick.

Spray foam roof damage.

This document provides a means to evaluate information collected from the investigation of an spf roof system after damage has occurred and to make recommendations for the rehabilitation and or repair of. Moisture problems in your attic can lead to mold as well as damage to the homes internal structure. The spray foam can also serve as the thermal and vapor control layers in both new and retrofit construction. Lstiburek takes blame for bad language.

The foam itself will also degrade and laminate over time. Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing. You need an expert to install it spray on roofing can t be installed by any contractor as it s a highly specialized solution that needs immediate care and attention when installed. Early spray polyurethane foam roof designs were susceptible to occasional mechanical damage by birds crows and seagulls.

This coating needs to be replaced. Here are some negatives to spray foam roofing that might make you want to consider a different option. It s not coming from above the roof and it s not some new moisture source resulting from the spray foam. How a spray foam roof handles hail damage as we saw before spray foam roofs will indent and the surface may crack when being exposed to hail.

Atlas corporation technical bulletin for what they call under deck sprayed in place foam insulation. A natural disaster or intense hail storm can also cause extensive damage to your flat roof. In an unvented attic scenario to limit air leakage as well as any associated condensation at the roof line a continuous air barrier is required. One last point owens corning makes about spray foam insulation is that it can make detecting a roof leak harder.

Despite the advantages of using spray foam under the roof deck there are some potential risks. The primary risks are rainwater leaks condensation from diffusion air leakage and built in construction moisture. We ve seen some crazy hailstorms ones that ve made impacts as deep as inch. Spray foam roofing repair for extensive damage.

This phenomenon has been stopped with the inclusion of granule surfacing embedded into the top coat. This damage can usually be repaired economically and does not require the roof to be replaced. A spray polyurethane foam spf roof to leak. The elastomeric coating on a spray foam roof naturally degrades after time.