Ken writes from Warner Robins, Georgia: "I am building an 8 x 12 garden shed/playhouse with 2x6 rafters with a ridge beam. I plan to sheetrock the inside of the shed and it will have cathedral ceilings. I want to put in a ridge vent and vented soffits, but my concern is there won't be enough flow of air between the sheetrock and the sheathing if I put in insulation. We are located in middle Georgia, so summers are hot. What would be the best application for my situation?"

Answer: For a cathedral ceiling with 2 x 6 rafters we recommend Kraft-faced R-13 insulation. That will leave an air space between the top of the FIBERGLAS™ insulation and the bottom of the roof deck. The also requires soffit-to-ridge ventilation.