People are starting to hear more about spray foam insulation, one of the many offerings from Graber Insealators. But some people find out that there’s actually two different types of spray foam, open cell and closed cell insulation, which leads to a very common question. Open cell versus closed cell spray insulation, which spray foam is better, open or closed? There’s not one simple answer to that question, but we’re going to break down some examples of when one type may be superior to the other.


Open Cell Versus Closed Cell Spray Insulation Cost

  • Cost. If you’re purely looking at the economics of open cell versus closed cell spray insulation, open cell is the cheaper option. Closed cell costs anywhere between $0.70 and $2.00 per board foot, depending on location and volume, while open comes in at a cheaper $0.45 to $0.65 per board foot.

Open Cell versus Closed Cell Spray Insulation R-value

  • R-value. This is where closed cell shines, if you’re looking for the maximum R-value, as closed cell has an R-value of 6.0-6.5 per inch versus a 3.5-3.6 per inch value for open cell.

Open Cell Spray Foam Versus Closed Cell Spray Foam, Which is Greener?

  • Keeping your home “green” friendly. Open cell spray foam are sometimes made with soybean oils or other bio-based raw material instead of purely using petrochemicals, like closed cell does. Open cell also uses water or carbon dioxide as the blowing agent, while closed cell uses hydrofluorocarbons, or HFC’s, as blowing agents, making them significantly more damaging to the environment. The difference between carbon dioxide and HFC’s as blowing agents is striking, as HFC’s are 1,430 times more potent than carbon dioxide in terms of affecting global warming.

Those are just some examples of which spray foam may suit your home better in the open cell versus closed cell spray insulation discussion, but to get the entire facts and know for sure whether open cell or closed cell spray foam insulation is right for you, be sure to contact the professionals at Graber Insealators with all your comparison questions today.



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