Quote:
Originally Posted by ctgottapee
And unfortunately not as avail and pricey. I'd like to use it too and Menard here started to carry it, but it's almost 4 times fiberglass price. Even more than the expensive denim batting.
|
Mineral wool is the same price of fiberglass where I live.
Quote:
Originally Posted by ctgottapee
Any reason you didn't just buy one of the foam spray tank kits and do a 1 or 2" spray underneath?? It's about a $1 a board foot. Might require some planning to move the tanks timely to prevent clogging.
|
I think that possibly might have been the best way to go, now that I have done all this. The EPS is about $.38 per board foot. Plus, my son (William Hackerson) is really struggling to find a job and pay rent, etc. so this is something of a public works project for him.
Quote:
Originally Posted by ctgottapee
And I'm confused by the radiant barrier, I thought it was suppose to go on the warm side(floor) of the air space to prevent heat radiation through the air gap??
|
I'm pretty sure that you need an air gap between the radiating surface and the reflective material. I've seen recommendations of 1/2 inch to 1 inch. But the wavelength of IR is very short (< 1 mm), so I think that the gap can be small.
-AC