Finishing basement questions (GTA Ontario area)

9/12/2017 at 9:18:39 AM

Hi. You are correct. Remember VB on the warm side. 4 to 6 mil. VB is best. The thicker the better and tape all joints with tuck tape and use accoustical sealant on top and bottom 2x4s.

9/21/2017 at 4:11:20 PM

First, is the cinder blocks dry all year round? If not then it's a different situation. Assuming there dry, then you do not have to use rigid insulation. Although it's a better system when used behind the 2x4 wall. It creates a thermal break from the cold blocks. The vapour barrier has to be on THE WARM SIDE of the wall, which is just behind the drywall. Not on the cinder blocks as it will just trap moisture inside the wall. If your worried about possible moisture from the blocks then use house wrap on the cinder blocks behind the wall. House wrap is waterproof but still allows the blocks to breath if they get wet or damp. I think what you are referring to is that wood should not be in direct with concrete. Which is handled simply by place plastic sheeting under neath the wall, it doesn't have to wrap all the way around.