Extruded Styrene / Styrofoam
#1
If you've got a source for styrofoam (extruded styrene) in hot climates, let us know...

In Ottawa (not exactly a hot climate...! Wink ), you can get it in various densities and up to 4" thick from:

Gratien-Proulx
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Andrew
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#2
It has less to do with hot climates and more to do with whether the houses in that area have basements. As I understand it, foam is typically used to insulate basement walls. Here in Arizona, you can get blue foam in 1" thick sheets at the local home center. I haven't found a source for anything thicker.
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#3
I find it really strange that places with hot climates seem to not use extruded foam insulation: insulation will cut-down on cooling costs just as effectively as it cuts-down on heating costs.
While it's true that it can be used as an exterior foundation insulation, many houses in Canada use it as an exterior sheathing. I'm not sure that the latter is a wise application, though, as it is classified as an acceptable vapour barrier - generally applied on the inside of walls and ceilings, with the outside walls left "breathable". I used it on the underside of my second-floor sloped ceilings, as there's a limit to the amount of insulation that can be placed within the confines of 2"X8" rafters, and, if I were to build another house, would sheath the inside face of all exterior walls with 2" foam.

Wayne
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#4
nachoman Wrote:It has less to do with hot climates and more to do with whether the houses in that area have basements. As I understand it, foam is typically used to insulate basement walls. Here in Arizona, you can get blue foam in 1" thick sheets at the local home center. I haven't found a source for anything thicker.


In the UK, (I know not really helpful) you can get Styrofoam up to 6" thick. The stuff I use is made by Dow Chemicals. They probably sell the stuff in the US aswell. I hope you can find some.
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