Is R-40 available in 16″ widths?
Steve writes from Halfmoon Bay, British Columbia: “In a 2×10 cathedral ceiling of 2×10 16″ o/c with 2×4 strapping 16″ o/c diagonally opposite on the top side then 1/2 inch ply would r-28 be sufficient or could r-40 be stuffed in there? Does r-40 come in 16″ widths? I could also put in r-12 then R-28 to get the r-40 value. Lastly, if I stuff r-40 in this space will I defeat the r value because it will be denser? P.S. you might want to check with a Doctor but I think you look a bit queasy. I think you may have high blood pressure.” Answer: Thanks for your concern about my health. I will take your advice and see my doctor. I am not surprised I look queasy, given the fact that I just finished my 11th major film (The Pink Panther 2 opened Feb. 6, in the United States and Canada). Although the R-40 PINK Fiberglas™ batts are available in 16″ width, they are 11″ thick; I agree with you that the R-28 would fit better in the cavity of your cathedral ceiling. It is also made 16″ wide.