Can you feel the difference between R-15 vs R-25?
I have a drafty house built during the 1960’s. The siding was done 2 years ago. I am going to improve the insulation and was wondering, all other things being equal, can you really feel the difference between a wall that’s R-15 vs R-20 or R-25?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part