Graphite Dave
Dave Orton
Ceiling has four layers of material between the ribs and five layers total.
1. 1/4" x 1 1/4" closed cell foam to fill roof corrugations.
2. 1/8" thick "Rattletrap" brand noise reduction sheeting.
3. 1 1/2" thick closed cell rigid foam insulation board.
4. Reflectix foil and air bubble insulation.
5. 1/4" thick white plastic ceiling bolted to ribs. (not shown - future)
Spray insulation was used in voids around rigid foam. (Hate this stuff) Used 1" thick rigid foam between the 1 1/2" rigid foam and the ribs and at each end under roof channel studs. Duct taped joints between rigid foam boards.
The four layers fill the ceiling area between the roof ribs. My theory is without trapped air that contains water vapor, the condensation on the underside of the metal roof will be eliminated. I also filled each rib with spay foam. (Did I say I hate this stuff) The closed cell foam corrugation fillers were glued to the roof with 3M spray adhesive. Also used the #77 between the 1 1/2" foam board and the Rattletrap sound deadener. Used boards between the floor and ceiling to apply pressure on rigid foam until glue dried.
1. 1/4" x 1 1/4" closed cell foam to fill roof corrugations.
2. 1/8" thick "Rattletrap" brand noise reduction sheeting.
3. 1 1/2" thick closed cell rigid foam insulation board.
4. Reflectix foil and air bubble insulation.
5. 1/4" thick white plastic ceiling bolted to ribs. (not shown - future)
Spray insulation was used in voids around rigid foam. (Hate this stuff) Used 1" thick rigid foam between the 1 1/2" rigid foam and the ribs and at each end under roof channel studs. Duct taped joints between rigid foam boards.
The four layers fill the ceiling area between the roof ribs. My theory is without trapped air that contains water vapor, the condensation on the underside of the metal roof will be eliminated. I also filled each rib with spay foam. (Did I say I hate this stuff) The closed cell foam corrugation fillers were glued to the roof with 3M spray adhesive. Also used the #77 between the 1 1/2" foam board and the Rattletrap sound deadener. Used boards between the floor and ceiling to apply pressure on rigid foam until glue dried.
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