With all the various kinds of spray foam out there as a choice, we wanted to describe what the 2 primary kinds are. We will be talking about the distinctions concerning open-cell foam and closed-cell foam spray insulation.
Open-Cell Spray Foam Insulation
The same as how it is termed, open-cell foam comprises small bubbles which are interconnected. The bubbles keep air, giving the insulation benefit. The R-Value is generally around R-3.5 and R-4 per in. It’s R-Value is just not as large as closed-cell, which we will see next, and it is a lot more porous too, due to the air bubbles, and can absorb moisture a lot like a sponge.
Both closed-cell and open-cell foam will expand in spaces and crevices when it is utilized. Open-cell foam has a softer feel due to the air bubbles. Every insulation will lose R-value whenever it becomes moist, so making use of open-cell spray foam in humid areas including in basements and crawl spaces is absolutely not the best choice. Open-cell foam is normally more affordable to install that closed-cell foam.
Closed-Cell Spray Foam Insulation
Probably the best example of closed-cell foam that almost all house owners are acquainted with is the brand Great Stuff, that is available in a can. On the other hand, the form of closed-cell spray foam that a expert insulation company will make use of is actually a two-component variety. Two chemical ingredients are combined together within the application nozzle, resulting in the enlarging foam effect. Great Stuff is a “single-component” form.
Closed-cell is a lot more expensive to apply because its far more dense, nonetheless for household insulation undertakings it happens to be the ideal option because it has a higher R-Value (between R-6 and R-7.1 per in.). It furthermore creates an excellent moisture screen that open-cell foam could not produce. Since it prevents wetness, it likewise produces a superb air seal and vapor barrier and a lot tougher finish compared to the softer open-cell variety. Another benefit from it is it can strengthen the structural hardness of the house since it is so dense in character.
Nearly all insulation companies think closed cell foam certainly is the best insulation solution that can be purchased at present. Even though it will cost more, its cost usually can pay for itself in 4 to 6 years. It is around 40 percent more energy-efficient as compared with typical insulation, and will go a good way at increasing the worth of ones residence!
If closed-cell foam is significantly better, when should homeowners consider applying open-cell spray foam? The most effective purposes for it are for dry roof and wall cavities. It will still have exceptional insulation qualities and furthermore will help with sound proofing as well. At a thickness of 5 ¼ inches, open cell spray foam absorbs 95 percent of heat infiltrating a roof.
The graphic on the right reveals the insulation R-Value comparison between spray foam, fiberglass, and fiber board sheating. With the information from above on the two R-Values of open and closed-cell foam offered, its obvious that either one is a definite benefit above common insulation.
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