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S-F · 11-22-11, 05:16 PM

:My opinion:

EPS is good because it is more vapor permeable than other rigid foam insulation but it has the lowest R value of them all. So you'd need to use a bunch to make all the work worth your while. Anything over 4" is very hard to screw down. You loose sight of where the studs are. Also the screws (headlok) get REALLY expensive as they get bigger. Get recycled polyiso (preferable) or get it from a lumber yard if the store you're thinking of doesn't have it.

I don't like Hardi board. It's the new vinyl siding. Sure it's nice for 10 years or so but it sukcs when it's old. There's about are a million reasons I don't use Hardi board.

11-22-11, 05:16 PM	#17
S-F You Ain't Me Join Date: Nov 2009 Location: Northampton MA Posts: 662 Thanks: 6 Thanked 71 Times in 58 Posts	:My opinion: EPS is good because it is more vapor permeable than other rigid foam insulation but it has the lowest R value of them all. So you'd need to use a bunch to make all the work worth your while. Anything over 4" is very hard to screw down. You loose sight of where the studs are. Also the screws (headlok) get REALLY expensive as they get bigger. Get recycled polyiso (preferable) or get it from a lumber yard if the store you're thinking of doesn't have it. I don't like Hardi board. It's the new vinyl siding. Sure it's nice for 10 years or so but it sukcs when it's old. There's about are a million reasons I don't use Hardi board.