Closed-cell polyurethane spray foam is known to be the most common of the two. Its considered a closed cell due to its high R-value. The R-value is the materials capacity to insulate and resist ...

Closed-cell polyurethane spray foam has some pretty awesome qualities. It has a high R-value. Its resistant to water, mold and insects. It expands into hard-to-reach nooks and crannies.

Keep in mind that open-cell spray foam doesn’t insulate as well as closed-cell foam does (it’s got a lower R-value), so you may want to shell out for closed-cell if you live in a cold climate.

Sleeping pads are no different, which is why inflatable pads typically have higher R values than closed-cell foam pads. Closed-cell foam is made from rubber compounds pressurized with gas to create ...

Closed cell spray foam is considered to have the best R-value of any insulation type, with an R-value of around 6.5 per inch.” — HD Horne Sprayfoam & Insulation VICTORIA, BRITISH COLUMBIA ...