Insulation R ratings
A 150mm thick polyurethane foam insulation layer will typically have an R-value between R-22.5 and R-42, depending on the specific type of polyurethane foam. Closed-cell spray polyurethane foam typically has an R-value of R-6.5 to R-7 per inch. Therefore, 150mm (approximately 6 inches) of closed-cell spray foam would have an R-value of roughly R-39 to R-42. Rigid foam boards, like polyisocyanurate, can also have higher R-values per inch, with some reaching R-6.5 per inch
Foam insulated 6 inches
Ready for our Canadian winters!
Here’s some information about foam insulation for Canadian winters:
Foam insulation is highly effective for Canadian winters, offering excellent R-values (resistance to heat flow). A 150mm (around 6 inches) layer of polyurethane foam can provide an R-value between R-22.5 and R-42, depending on the type. Closed-cell spray foam typically has an R-value of R-6.5 to R-7 per inch, meaning 150mm of it would achieve an R-value of roughly R-39 to R-42. Rigid foam boards, such as polyisocyanurate, can also have high R-values, some reaching R-6.5 per inch. These high R-values ensure that container homes stay warm during the cold Canadian winters.
