I have a hearthstone homestead with a 2.5 R value for floor protection and I have 5 inches to work with to achieve that.The owners manual says horizontal still air =.92. I have read of using strips of 1 1/2 inch wide by 1/2 inch thick hardiebacker as spacers with full sheets separating each layer. My plan would be to use 1/2 inch thick strip on subfloor -------followed by 1/4 inch full sheet-----------then
1/2 strip as spacer
1/4 full sheet
1/2 strip as spacer
then full sheet with tile to finish. I think that would get me to around 2.96 and keep me around 3 inches in height.
Is this right and if not any suggestions would be appreciated.
1/2 strip as spacer
1/4 full sheet
1/2 strip as spacer
then full sheet with tile to finish. I think that would get me to around 2.96 and keep me around 3 inches in height.
Is this right and if not any suggestions would be appreciated.