Spray Foam Attic

With these benefits of spray foam there are also cons that can be created in the environment as well.

Spray foam attic. In typical construction and climates building code tables can be followed when using spf as an insulation and air seal. Sealing the top of the house keeps the air you paid to heat and cool inside your home. The pros and cons of spray foam insulation can include the following. Installing insulation attics one of the high tech insulation products being utilized these days is a foam spray product called icynene which is a foam that starts as two liquid components a and b if you will that are heated up and sent through two hoses and meet at a tip of a gun where the magic begins.

It is made from inert polymers that do not become a food source for mold mildew or fungi when it becomes wet. Spray foam comes in two flavors open cell and closed cell and provides both parts of the building envelope the insulation and the air barrier. The two products most often used in an unvented attic assembly are medium and low density sprayed polyurethane foam spf. Open cell spray foam insulation can expand up to 100 times its original size to fill every nook and cranny in the cavity where it is applied.

If you look closely you ll see two exhaust flues on the left side. When spray foam is installed on the underside of the roof deck the attic space is insulated from heat that otherwise would be entering the attic. Even if there is moisture in your attic from a leaking plumbing line a swamp cooler or a similar issue the spray foam insulation will deter the growth of organics in your home. It s important you spray foam attic rafters only if you need to.

You should never do this. Spray foam attic insulation is used primarily to act as a barrier to limit air movement and reduce the amount of energy loss that homes experience during the season changes. It s quick and easy to do. And the benefits range from much lower utility bills to fewer pests to reduced sound transfer.

The insulation reduces wildly high temperature spikes and so the attic becomes a conditioned part of the home like any other room. If you re using the attic for living space then you need to insulate the rafters. The attic you see in the photo here is a different home but it does have one feature in common besides the spray foam. The installer sprayed foam directly on the metal flues.

Spray foam attic insulation pros and cons spray foam insulation is an air barrier material that creates a seal against air movement. Consumers are often told by spray foam contractors to do the rafters. You ll also see another safety hazard and code violation.