PILOON
Super Star Member
You lose more heat via the ceilings than the walls so put lots of R's up there.
Now with walls (and openings) what you want is a well sealed 'bag', so to speak.
Tape ALL the joints, foam seal around all door and window openings.
Lots of framers also caulk bead the lap joints and corners as well as tops and bottoms to assure a perfect seal.
Any hole, even smallest, in the vapor barrier 'bag' will allow humidity to escape into the insulation and (take it from personal observation) that come Jan/Feb that insulation will be all frosted and look just like a frozen bread loaf.
We generate much more humidity than we think, just look at windows on cold days, that moisture condenses on the cold glass.
Now with walls (and openings) what you want is a well sealed 'bag', so to speak.
Tape ALL the joints, foam seal around all door and window openings.
Lots of framers also caulk bead the lap joints and corners as well as tops and bottoms to assure a perfect seal.
Any hole, even smallest, in the vapor barrier 'bag' will allow humidity to escape into the insulation and (take it from personal observation) that come Jan/Feb that insulation will be all frosted and look just like a frozen bread loaf.
We generate much more humidity than we think, just look at windows on cold days, that moisture condenses on the cold glass.