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R-Value and Open Cell vs. Closed Cell Spray Foam
R-Value is a measure of insulation's ability to resist heat traveling through it. The higher the R-Value the better the thermal performance of the insulation.
R-Value 3.8
Open cell foam is full of cells that aren’t completely encapsulated. In other words, the cells are deliberately left open. This makes the foam a softer, more flexible material.
Benefits of Open Cell Foam
One of the biggest benefits of open cell foam is that it expands so much after it has been applied, meaning it can insulate hard to reach nooks and crannies in a home. These types of areas can be hard to insulate with closed cell foam. Open cell foam is excellent for soundproofing where a single application can completely fill the area between studs.
R-Value 6.8
Closed cell foam is made up of cells that are, as the name suggests, completely closed. The cells are pressed together, so air and moisture are unable to get inside the foam. Because of this, closed cell foam is much more rigid and stable than open cell foam.
Benefits of Closed Cell Foam
Closed cell foam is the best choice for robust insulating where space is an issue, as it can achieve 2x the R-Value of open cell inside a standard wall. Its rigid nature also adds to the structural integrity of the building and E84 fire rated versions are available. The closed cell also acts as a vapor barrier, so water and moisture will be less likely to get inside the home, and the foam itself is unharmed by water damage.
So which one should I use?
Ultimately, it depends on where a house is located, what the insulation goals are, and of course how big the budget is. Need some more help deciding between open cell vs closed cell foam? Give us a call!
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