Spray Foam Inside Attic Insulation Problems

Joe lstiburek has been saying for a while now that we can t just ignore the.

Spray foam inside attic insulation problems.

By doing so you bring the attic inside the building enclosure. 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. Owner received an energy audit and implemented some of the recommendations. Spray foam insulation has been the material of choice for many builders and homeowners for nearly 30 years.

Moisture is also another huge issue when it comes to spray foam insulation in an attic. But what happens to that attic space when you move it inside. Nothing unusual about that. Just like with any other product as something becomes more popular there will be an increase in misuse.

A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. One of those problems is moving the building enclosure from the drywall ceiling of a home to the roofline. Below we are going to list the most common problems with using spray foam insulation in your home s attic or in any area inside of your home. The real issue is the improper formulation and installation of large amounts of spray foam in homes and buildings by poorly trained unknowledgeable or.

Removed all batt insulation in the attic removed both hvac systems and all duct work performed air sealing in the crawl space and the attic at the floor and ceiling and installed 5 of demilec open cell spray foam on the roof deck. Spray foam insulation can solve problems that other insulation materials can t. This is not just a diyers issue. Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing.

Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic. Spray polyurethane foam insulation of any kind uses isocyanates in 50 of the formulation even those claimed to be made with soy or other natural oils. Placement errors during installation attics are the main spots in a home that are filled with unusual shapes gaps and spaces where air bubbles have the potential to form when you spray foam insulation. Oh and when you put it in your attic spray foam.

In fact spray foam insulation can help avoid problems like these. Are you considering spray foam insulation for your home but you have concerns about what could go wrong. Earlier this year i got a question about a home that had spray foam insulation in the attic. Using spray foam insulation in an unvented attic application.

Many homeowners love spray foam insulation and it s easy to understand why. Both low density open cell and medium density closed cell spray foam can be used in an unvented attic to provide the needed thermal resistance and airtightness.