Open cell spray foam has an R-value around 3.5 per inch and typically uses water as the blowing agent. Closed cell spray foam has an R-value of around 6.0 per inch (aged R-value) and uses high R-value chemical blowing agents. This information can be verified by following this link http://en.wikipedia.org/wiki/Spray_foams_(insulation)
The advantages of closed-cell foam compared to open-cell foam include its strength, higher R-value, and its greater resistance to the leakage of air or water vapor. The disadvantage of the closed-cell foam is that it is denser, requires more material, and therefore, is more expensive. Even though it has a better R-value, typically the cost [...]
When it comes time to actually put spray foam insulation in your home or commercial building, you must decide whether you will use 0.5 lb./cubic foot., open cell foam, or 2.0 lb./cubic foot. closed cell foam. This makes a big difference in material cost, how the foam is applied, and the overall performance. The Foam density is measured [...]
Yes, spray foam estimates are free. At least with Green Apple Spray Foam Insulation. Most companies do not charge for spray foam estimates, but if you are looking to receive an energy audit then fees maybe charged. Energy audit are generally for existing structures that have extreme heating and/or cooling issues. But can also be [...]
Spray foam insulation for residential purposes has become the number choice for new and existing homeowners as well as home builders. There are two general types of spray foam that are commonly used; closed cell and open cell foam. Closed cell spray foam insulation is mainly used with sub-floors, and is applied at a two [...]
You are probably wondering if rodents and pests affect installations. Well, spray foam insulation offers no food value to rodents or pests. It should be noted that open cell spray foam would not present a barrier to their entry if they decided to gnaw through it. Therefore open cell spray foam should not be considered [...]
No, spray foam insulation is stable. It does not shrink or sag. The reaction that creates spray foam insulation is irreversible and it cannot break down into its constituent parts. So, rest assure that your foam will be 100% effective for a lifetime and more.
Most of the damaging moisture within a building envelope is the result of air movement through the cavities. When warm air meets a cold surface within a cavity, it condenses; and if not found in time, it can lead to mold and rot. Spray foam insulation creates continuously insulated, tight walls and ceilings – exactly [...]