Spray Foam Insulation Moisture Issues

Over time trapped moisture can cause serious problems.

Spray foam insulation moisture issues.

Applying an even sheet of foam to the underside of a roof or other space can eliminate the routes that water vapor uses to leave the house. Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing. The problems include lack of adhesion to the cavity the foam is sprayed in and moisture management issues that can create mold and mildew have occurred because an imitation product was. One way we can all reduce energy expense in the world is by properly insulating our homes.

However let s go into detail rather than just taking my word for it. Moisture myths and spray foam. Spray foam insulation moisture problems. Here at iowa spray foam we get a lot of questions about spray foam and appropriately so.

Homes insulated with it can be some of the most efficient and comfortable homes built. Joe lstiburek has been saying for a while now that we can t just ignore the. These days one of the major concerns in the world is reducing the energy cost. Have you thought about spray foam insulation for your home but you have questions about potential problems.

Spray foam insulation can solve problems that other insulation materials can t. Becoming more affordable significant long term energy savings sealing restricts air movement through the building envelope. Moisture management with closed cell spray foam insulation. Closed cell spray foam insulation can act as a class ii vapor retarder an important feature particularly in climate zones 5 8.

But what happens to that attic space when you move it inside. Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic. It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. Moisture is also another huge issue when it comes to spray foam insulation in an attic.

Spray foam s air barrier properties can help minimize the movement of moisture laden air within the building envelope and its associated moisture problems. By doing so you bring the attic inside the building enclosure. I ve been in plenty of these homes and can tell you that when spray foam is installed properly they outperform 99 of fiberglass batt insulated stick built homes. I can also tell you that 73 of all statistics are made up on the spot so please don t ask for.

Spray foam insulation problems include. Incorrectly installed spray foam insulation can trap moisture in the home encouraging rot and mold problems. This is because of many environmental issues we face and we should be more and more preoccupied for them. Spray foam insulation is a great product.

One of those problems is moving the building enclosure from the drywall ceiling of a home to the roofline. 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.