Shows an R-value of 3.7 - 21 (depending on application).. That's quite a range. At 3.7 I wouldn't think you'd feel much benefit. 21 would do you great. I did my 2 car garage with R-19. World of difference, I love it.
Yeah, I'm tryin to figure that out. How does insulation have a variable R factor? And what application gets how much R factor? So far, I'm not having any luck finding those answers.
