I used spray glue from 3m and rolled my 4 ft reflectix across my 4 ft wide x 8ftl ong styro-foam insultation sheet(3/4 inch) and it worked awesome!!! I will take a couple of pics...

You could even spray glue mylar to walls if you like. This stuff works great!!
CaliJay Reviewed by CaliJay on . Mylar Question Does it have to be completely flat against the wall? i have it taped up and i didnt try and flatten the mylar out, its really loose and moves when the fans blow on it... and now that i think about it, it would probably reflect more light if layed flat against the wall... any opinions on this? Rating: 5