Open Cell Spray Foam Insulation R Value Chart

3 inches of open cell foam r14 outperformed 11 inches r 32 of fiberglass cellulose and rockwool.

Open cell spray foam insulation r value chart.

Closed cell open cell spray foam r values. Open cell spray foam has an r value of about r 3 7 per inch while closed cell spray foam has an r value that may be as high as r 6 5 per inch. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. The r value for open cell is typically around 3 7 at 1 thick and varies by manufacture.

Closed cell spray foam insulation. If you want to install spray foam in a stud wall and price is no object then it would seem to make sense to specify closed cell spray foam right. Use the following chart to estimate an ideal r value for your insulation project. Open cell spray foam insulation is air impermeable and is applied with a minimum of 3 5 on average and can be used for attics interior floors walls and soundproofing.

It measures the effectiveness at stopping energy loss by way of conduction one of the 3 forms of energy transfer. As always should you have any questions or require any assistance in planning your spray foam insulation job please contact us we are always happy to help. It has a lower r value per inch than closed cell foam and is vapor permeable. Spray foam insulation san diego masco corporation is a global leader in the design manufacture and distribution of branded home improvement and building products.

Closed cell spray foam has the advantage of not requiring a vapor moisture barrier and it also sports a very high r value making it an ideal choice for insulating basements and first and second floors alike. Open cell foam insulation values r3 r4 open cell spray foams are last month we selected closed cell spray foam for the basement finishing project we re working. The results were amazing. Open cell spray foam typically has an r value of 3 5 per inch and it should be insulation is not required to meet the r value minimum listed in the chart above.