How To Insulate A Cathedral Ceiling
- Install unfaced mass insulation with at least a 1 inch air-gap between it and roof sheathing.
- Staple, screw or glue (Super metal Sealant) Prodex Total to underside of trusses.
- Seal seams with reflective tape or order Prodex Fast Action or 10M to avoid having to use seam tape.
- Install 1" x 2" wood strapping under Prodex Total.
- Install Drywall over the strapping.