so, I apologize up front for being the "newbie" that is asking a question that im assuming has been asked 1,000 times before. but I can't seem to find any "all inclusive" information on what is actually the best insulation for metal buildings.
We were originally looking at a radiant barrier insulation like Prodex, a 1/4'' thick closed cell polyethylene foam core with a reflective radiant barrier. although now we are seeing reviews that state the R values are almost nothing and that it's a waste of money.
when it comes to Fiberglass insulation (vinyl backed) for metal buildings, we've heard horror stories of how the fiberglass eventually retains moisture from the condensation of the building (as they naturally sweat) and the backing starts sagging, eventually separating and you'll end up with your insulation on the floor.
Spray Foam insulation - My major concern, which I hear people verifying online; is that foam inherently retains moisture. So, you're essentially spraying moisture retaining foam up against metal and it's just a matter of time before your building will rust. Unless I am missing something? I have seen a similar situation numerous times where people spray 'Great Stuff" expanding foam up against metal panels in their (classic) vehicles. they rot out in no time.
so, is there any *best* option out there for insulating my 40'x72'x14' metal building in Central Texas? it's hard to weed through all the "snake foil" insulation claims and it seems like everything I'm looking at has an *eventual* major drawback. can anyone steer me in the right direction?
We were originally looking at a radiant barrier insulation like Prodex, a 1/4'' thick closed cell polyethylene foam core with a reflective radiant barrier. although now we are seeing reviews that state the R values are almost nothing and that it's a waste of money.
when it comes to Fiberglass insulation (vinyl backed) for metal buildings, we've heard horror stories of how the fiberglass eventually retains moisture from the condensation of the building (as they naturally sweat) and the backing starts sagging, eventually separating and you'll end up with your insulation on the floor.
Spray Foam insulation - My major concern, which I hear people verifying online; is that foam inherently retains moisture. So, you're essentially spraying moisture retaining foam up against metal and it's just a matter of time before your building will rust. Unless I am missing something? I have seen a similar situation numerous times where people spray 'Great Stuff" expanding foam up against metal panels in their (classic) vehicles. they rot out in no time.
so, is there any *best* option out there for insulating my 40'x72'x14' metal building in Central Texas? it's hard to weed through all the "snake foil" insulation claims and it seems like everything I'm looking at has an *eventual* major drawback. can anyone steer me in the right direction?
