What Is Insulation R-Value? (+ Insulation R-Value Chart)

When checking insulation specs sheets, R-value comes up quite often. What is R-value? We will look into what does R-value means, how it is calculated, what are the minimum recommended values of R for attics, 2×4 and 2×6 walls, and so on (you will find a complete insulation R-value chart further on), and what it’s … Read more