23 Jun '13, 12pm

@wjmarchitect: #architect #sustainable #efabism Closed--cell foam isn't cheap, but it provides a much higher R-value

@wjmarchitect: #architect #sustainable #efabism Closed--cell foam isn't cheap, but it provides a much higher R-value

Open-cell foam ofter requires an interior vapor retarder. When used to create a cathedralized attic An unvented attic with insulation installed between the rafters or above the roof sheathing. Moving the insulation from the attic floor to the roof plane turns the attic into conditioned or semi-conditioned space; this is especially beneficial in homes with attic ductwork. The term “cathedralized attic” usually refers to an attic that does not include finished space. in a cold climate (climate zones 5 and higher), open-cell foam should always include a vapor retarder (for example, a layer of gypsum wallboard finished with vapor-retarder paint). Recent research has shown that vapor-retarder paint is ineffective when sprayed directly onto cured foam insulation, so cold-climate builders who don't plan to cover the spray foam with a layer of drywall should stick with closed-cell...

Full article: http://www.greenbuildingadvisor.com/green-basics/spray-fo...

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What is Spray Foam Insulation?

What is Spray Foam Insulation?

resnet.us 22 Jun '13, 2pm

Installed either as a hard foam board or sprayed onto walls or into hard-to-reach areas where traditional insulation is di...

Shortchanged On Spray Foam #green

greenbuildingadvisor.com 19 Jun '13, 8am

Ok - So I began to rip down some of the smelly open cell foam and realized that the foam guy completely ripped me off with...

Spray Foam #green

greenbuildingadvisor.com 30 Jun '13, 8am

Is there any literature discussing the application of closed cell spray foam applied to a fiberglass or roxul batt.

Green Building Q&A: Spray Foam Odor Help

greenbuildingadvisor.com 18 Jun '13, 11am

Hello and thanks for looking at my post. I'm obviously new to this and am here out of desperation. I had a company install...

Question regarding rigid foam under slab (for M...

greenbuildingadvisor.com 19 Jun '13, 7pm

I'm building a home in Ottawa, On. (zone 6) I'm laying 2 inches of EPS under the slab (R-8) and 4 inches of EPS on the int...

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greenbuildingadvisor.com 19 Jun '13, 3am

Hello - can anyone tell me if Open Cell is supposed to have a "smell"? The guy who installed the foam says that the foam s...

How do I build a rigid insulation roof on my sh...

greenbuildingadvisor.com 23 Jun '13, 2pm

I am building a shed roof on my NW (Seattle area...yes rain and moderate temps) cabin, 16 x 18 and I want to use rigid ins...

Pink vs Blue foam board under slab? #green

greenbuildingadvisor.com 18 Jun '13, 7pm

Hi...is there a preference between pink and blue foam board to be used under slab? Thanks!