This is the first in a series of blogs I’ve written for Rockwool and the R-Class Builder Program. If you are not already a member, you can join at this link, Rockwool R-Class. The R-Class program is free.
What is R-value? I write often about different insulations, how they perform, where they should and shouldn’t be used. I think this blog post should go back to the basics and talk about what is R-value, how it is calculated, and how much is needed.