With all the differing kinds of spray foam on the market as a choice, we desired to explain just what the 2 primary kinds are. We will be talking about the variations involving open-cell foam and closed-cell foam spray insulation.
Open-Cell Spray Foam Insulation
Similar to how it is termed, open-cell foam is made up of very small bubbles that are interconnected. The bubbles keep air, delivering the insulation value. The R-Value is generally between R-3.5 and R-4 per in. It’s R-Value is just not as large as closed-cell, which we will discuss next, and it is much more porous also, because of the air bubbles, and can absorb moisture very much like a sponge.
Both closed-cell and open-cell foam will expand within spaces and crevices the moment it is applied. Open-cell foam has a spongier touch as a result of the air bubbles. Every insulation will lose R-value whenever it becomes wet, so using open-cell spray foam in humid situations like in basements and crawl spaces is not a fantastic option. Open-cell foam is frequently cheaper to install that closed-cell foam.
Closed-Cell Spray Foam Insulation
Perhaps the best illustration of closed-cell foam that most property owners are common with is the brand name Great Stuff, which is available in a can. However, the variety of closed-cell spray foam that a expert insulation business will utilize is actually a two-component type. Two chemical compounds are merged together in the application nozzle, bringing about the increasing foam reaction. Great Stuff is actually a “single-component” form.
Closed-cell is more costly to install since it is far more dense, yet for residential insulation tasks it is the perfect choice due to the fact it has a higher R-Value (between R-6 and R-7.1 per in.). It additionally generates a fantastic moisture screen that open-cell foam could not develop. Because it prevents dampness, it likewise makes a good air seal and vapor barrier and a lot harder finish compared to the softer open-cell type. Yet one more advantage from it is it can certainly improve the structural hardness of the household because it is so thick in character.
Nearly all insulation contractors think that closed cell foam is the finest insulation solution that can be purchased today. Even though it does cost more, its cost usually can pay for itself inside of 4 to 6 years. It is around 40 percent more energy-efficient than typical insulation, and goes a long way at raising the value of ones property!
In the event closed-cell foam is more effective, when should property owners take into consideration applying open-cell spray foam? The best uses for it are generally for dry roof and wall cavities. It can still have exceptional insulation properties and furthermore can certainly help with sound proofing also. At a thickness of 5 ¼ inches, open cell spray foam soaks up 95 % of heat infiltrating a roof.
The graphic towards the right exhibits the insulation R-Value comparison between spray foam, fiberglass, and fiber board sheating. Along with the findings previously mentioned on the different R-Values of open and closed-cell foam given, it really is evident that both are a definite benefit over traditional insulation.
Back to Spray Foam Home. . .