Spray Foam Insulation Roof Problems

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.
Spray foam insulation roof problems. Older spray foam insulations such as uffi urea formaldehyde foam insulation may crumble and break down. To get the best performance out of spray foam insulation you must cover the roof rafters and surrounding areas as thoroughly as possible. Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing. 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.
Spray foam insulation problems there are several majors spray foam installation problems that have been associated with the use and application of spray foam in a home some of these problems will vary based on how much of the spray foam is used where it is placed who applies the spray foam and the conditions in this environment. Lstiburek takes blame for bad language. The poor application of spray foam insulation by an untrained or. Even small gaps can allow the passage of warm air through the foam rendering the foam all but useless as an insulator.
Spray foam insulation problems voids. In other words the spray has not been used in the right way or the mixture is not right for the location. Spray foam insulation problems misrepresentation of the spray foam insulation products used. Poor application of the spray foam insulation.
The spray foam insulation. Since there are dozens of brands of spray foam insulation. Foam board and. It s not coming from above the roof and it s not some new moisture source resulting from the spray foam.