If you compress the insulation, you reduce the impact it has.
It's acually the air within the insulation that acts as the barrier.
So if it's compressed too much, there's less air, so less insulation.
Hope that's all ok.
Dec 21, 2009
No Problem by: Anonymous
If you're worried about compressing the insulation you can always raise the height of the joists. This is of course if decreasing the available headroom isn't a concern.
