Spray Foam In Attic Space

Earlier this year i got a question about a home that had spray foam insulation in the attic.

Spray foam in attic space.

Intumescent coatings are not always needed to coat spray foam in the attic in order to meet code thermal barrier requirements. And the benefits range from much lower utility bills to fewer pests to reduced sound transfer. Spray foam insulation that s convenient and easy to use. R value of 7 in 1 inch 97 closed cell foam.

However there have been many questions regarding both the effectiveness and safety of using spray foam insulation in an attic and whether or not there is another type of. Spray foam has been used for the past 30 years due to its ability to rapidly expand and fit into a given space such as in an attic or other areas of your home and or building. Normally in occupied areas all spray foam must be covered by a 15 minute thermal barrier such as thick drywall per code requirements in irc section 316 4 and ibc section 2603 4. Here s the answer to the question posed in my article title.

Sealing the top of the house keeps the air you paid to heat and cool inside your home. Yes using spray foam we have added your attic to the conditioned space. However in a traditionally insulated attic insulation on the ceiling the attic is vented. This airtight seal helps to decrease homeowner costs including utility costs.

Learn more about this topic on this episode of foam university. Is it better to put spray foam insulation in your attic rafters or floor. When we seal the attic with spray foam it s as tight as a butter tub. Use closed cell foam it green for attic rafters.

Using spray foam insulation in an attic is a popular energy saving project. Get your kits the easy to use spray foam kit. When to spray foam attic floors. 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.

Attic ceiling to stop airborne moisture from reaching a cold surface and condensing inside the building envelope in this design insulation effectively separates the interior and exterior spaces while slowing down moisture flow so the dewpoint is not achieved within. Class i e 84 fire retardant meets building code spec. Nothing unusual about that. The unvented attic space is considered the most effective and up to date building practice particularly by the spray foam industry.

The best attic insulation. Spray polyurethane foam is a strong expansive product that quickly works to seal various cracks and holes in your crawl space attic and walls. Unvented attics sometimes called sealed enclosed or encapsulated attics feature insulation on the underside of the roof decking rather than on the attic floor.