I need to know how to insulate a cathederal ceiling, not woodworking but desperate?
Hi, l know this is nothing to do with woodworking but am desperate run out of money need to do myself a room as l can afford it house has never had ceiling insulation in the 28 years my father inlaw owned nit.
Sitting in the livingroom looking up at the ceiling, panels installed above the 5 1/2'' thick beams was the original outside roof. On the outer side of these 5-6'' panels is gravel/tar.
Must have leaked before my father in-law bought it in 1986, because above these panels is about a 10 inch airspace the a stick roof the carpenter called it outside 2 layers of shingles ridge roof vent only about 10 long of the 45-50 ft long roof so we added 3 sq brown roof vents.
Not sure how to insulate can't get into 10'' air space should l had 1x6 to bottoms of wooden beams on ceiling about 45 '' between beams in all rooms and atached 21 x 24 ft shop has never been a garage or do l need to remove outer shingles plywood insulate that way?
If insulating from inside between wooden beams, do i need a vapour barrier with 5-6 thick original roof ceiling tiles can't even cut threw tiles with chain saw sparks fly from chain hitting gravel/tar on other side of ceiling tiles.
Or no insulation since 1986 maybe ok with added roof vents and original ceiling tile roof been 5-6 inches thick.
If l need air vents ( styrofoam vents between outer and inner roof no idea how to get them there.
Please anyone help me if you can
Thanks James Ontario, Canada