Question: Can I use both fiberglass and foam insulation?
Marshel writes from Mankato, Minnesota: "“I have a shed roof on an addition, using 2x8 rafters. Can I fill the space between the rafters with insulation baffles and fiberglass batts, then attach 2-inch Foamular board to the bottoms of the rafters for an added R10 and then cover it all with sheetrock?"
Answer: Yes. What you describe is an acceptable application. And when using additional FOAMULAR® insulation we recommend using unfaced Fiberglas™ insulation.
