Spray Foam Roof Damage

Atlas corporation technical bulletin for what they call under deck sprayed in place foam insulation.

Spray foam roof damage.

A natural disaster or intense hail storm can also cause extensive damage to your flat roof. It s not coming from above the roof and it s not some new moisture source resulting from the spray foam. The elastomeric coating on a spray foam roof naturally degrades after time. 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.

Moisture problems in your attic can lead to mold as well as damage to the homes internal structure. We ve seen some crazy hailstorms ones that ve made impacts as deep as inch. 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. Spray foam roofing cons.

The spray foam can also serve as the thermal and vapor control layers in both new and retrofit construction. Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing. Despite the advantages of using spray foam under the roof deck there are some potential risks. A spray polyurethane foam spf roof to leak.

When a roofing contractor sprays foam down it s usually about 1 5 inches thick. Spray foam roofing repair for extensive damage. Moisture generated indoors or that infiltrates into the home is responsible for the bulk of the moisture in an attic insulated with spray foam on the underside of the roof sheathing. This damage can usually be repaired economically and does not require the roof to be replaced.

Early spray polyurethane foam roof designs were susceptible to occasional mechanical damage by birds crows and seagulls. Here are some negatives to spray foam roofing that might make you want to consider a different option. Lstiburek takes blame for bad language. 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.

The primary risks are rainwater leaks condensation from diffusion air leakage and built in construction moisture. One last point owens corning makes about spray foam insulation is that it can make detecting a roof leak harder. The foam itself will also degrade and laminate over time. This phenomenon has been stopped with the inclusion of granule surfacing embedded into the top coat.