jvitez
Well-known member
Great build! You've got lots of creative and practical ideas for what will turn out to be a great space.
A couple of points about your insulation: with 2x6 walls, why didn't you install R-20 instead of R-12 insulation? I know you're on a tight budget but Ontario has expensive energy rates (especially electricity), and you pay for insulation once but the savings continue forever.
You need a vapour barrier. You should be ASHRAE Climate Zone 6, so you need a Class II vapour retarder. Check out this info:
http://apps1.eere.energy.gov/buildi..._innov_vaporretarderclassification_011713.pdf
As per page 2 of this pdf, a Class II vapour retarder is Kraft paper faced fibreglass batts which aren't sold in Canada, unfaced expanded polystyrene rigid insulation, fibre faced polyisocyanurate insulation, or low perm paint on the inside.
You might want to look into this and decide what's best as you'd hate to have everything almost finished and then need to undo a lot of your work to change the insulation/vapour barrier. I know I've had to undo and redo far too many things in my own home and garage, and it really gets me!
On way would be to leave your R-12 as is, and put expanded polystyrene sheets between the studs over top of the fibreglass and spray foam the joint where the foam board meets the 2x6 stud. Another would be to sheet the inside with drywall or plywood and use low perm paint, however you wouldn't want to have an air space behind the interior sheathing as convection currents could occur inside this space and negate a lot of the insulation value.
Anyway, just my 2 pennies, or I guess 0.4 of a nickel in Canada now.
A couple of points about your insulation: with 2x6 walls, why didn't you install R-20 instead of R-12 insulation? I know you're on a tight budget but Ontario has expensive energy rates (especially electricity), and you pay for insulation once but the savings continue forever.
You need a vapour barrier. You should be ASHRAE Climate Zone 6, so you need a Class II vapour retarder. Check out this info:
http://apps1.eere.energy.gov/buildi..._innov_vaporretarderclassification_011713.pdf
As per page 2 of this pdf, a Class II vapour retarder is Kraft paper faced fibreglass batts which aren't sold in Canada, unfaced expanded polystyrene rigid insulation, fibre faced polyisocyanurate insulation, or low perm paint on the inside.
You might want to look into this and decide what's best as you'd hate to have everything almost finished and then need to undo a lot of your work to change the insulation/vapour barrier. I know I've had to undo and redo far too many things in my own home and garage, and it really gets me!
On way would be to leave your R-12 as is, and put expanded polystyrene sheets between the studs over top of the fibreglass and spray foam the joint where the foam board meets the 2x6 stud. Another would be to sheet the inside with drywall or plywood and use low perm paint, however you wouldn't want to have an air space behind the interior sheathing as convection currents could occur inside this space and negate a lot of the insulation value.
Anyway, just my 2 pennies, or I guess 0.4 of a nickel in Canada now.
Absolute steal
