Air and vapour barriers
Interior sheathing as an air and vapor barrier
...vapour barrier is to 60NG, the better. For the sake of context it should be noted that polyethylene is rated at 3.4NG.
Which is better - plywood or OSB for sheathing?
People also often ask the question which is better, OSB or plywood for roofs, walls and floors? That really depends on the other materials you're using i...