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20 Answers

How do I keep the winter wind from coming through my wall?

Robert Riversong submitted a photo to GBA that made us smile. See it here:
http://www.greenbuildingadvisor.com/blogs/dept/green-building-blog/rural...

In Energy efficiency and durability | Asked By Martin Holladay | Jan 29 10

14 Answers

I am looking at the performance of closed cell foam.

I am looking at the performance of closed cell foam and I have read many forums including the pro's and con's on this site which are very helpful. My question though is, have there been any issues of damp showing up on the interior surface of the drywall.
I am not looking at external insulation at this point and the wall structure I am most interested in would be brick or stucco over OSB or ply with 3.5" closed cell foam, 2 x 6 studs @ 24" centers and 1/2 inch internal drywall.
[Edit: The following was pasted from a subsequent posting]

In Energy efficiency and durability | Asked By Paul Jardine | Jan 25 10

4 Answers

Can closed cell spray foam be applied over dirt in a crawl space.

I have done in energy audit on the home yesterday, that is 30 x 30 square. Half of it is a full basement with a concrete floor the other half is a crawlspace with dirt. The foundation walls are stone and cement, the customers complain of moldy smell mainly in the summer. There is no insulation in the floor joists, the house is very cold. Would you recommend spraying closed cell foam over the dirt in the crawl space to seal the moisture, also coming up the walls to the sill plate just in the crawlspace area? Then in the unfinished basement area do the ceiling? I appreciate your opinion.

In Energy efficiency and durability | Asked By Pete Fusaro | Jan 29 10

5 Answers

Have glazing films improved from those on the market 20 years ago?

Manufacturers such as Serious Windows use films to separate "air" spaces in the triple and quadruple glazed units. Their commercial warranty on these units is 10 years and their residential warranties are lifetime of original owner. Is there good evidence that the films will stand up for the 20 years which most sealed units are warranted?

In Green products and materials | Asked By Jeffrey Goldstone | Jan 28 10

6 Answers

Do I need to use 5/8" drywall with 2x6 studs spaced 24" O.C.

I am constructing a home with 2x6 walls spaced 24" O.C on the exterior walls to increase the insulation values as well cut down on the amount of lumber used. The building code as well the manufacture instructions say 1/2" is o.k. to use with this type of stud spacing. My drywall contractor thinks there may be too much deflection at 24" O.C.

In Green building techniques | Asked By Bob Latvala | Jan 27 10

2 Answers

Low-flow, lead-free faucets

Can you recommend a low flow and lead free faucets?

In Green products and materials | Asked By Karen Miller | Jan 26 10

1 Answer

Raleigh, NC — Should I use 2x6 exterior walls with spray foam insulation or is that overkill for this climate?

What is the best way to insulate houses in this climate ?

In Energy efficiency and durability | Asked By eric Graf | Jan 27 10

4 Answers

12" structural brick wall - air space? insulation?

I have a client who wants to build a home using 12" utility brick for structural wall with felt applied directly to the brick on the inside, then 2 x 4 studs and a sill plate added just for interior finish nailer (interior finish will be t & g pine) and blue jean insulation between the studs. This is high humidity eastern coastal area and I'm very concerned about moisture and condensation.

In Green building techniques | Asked By pamela | Jan 26 10

18 Answers

Count me IN for 2010

I just upgraded to the annual membership.
I would love to see more videos like these "free" ones
http://www.greenbuildingadvisor.com/how-install-rigid-foam-insulation-ou...
Kudos to Dan Morrison, Gary Bergeron and David Joyce.....Excellent videos
Kudos to Martin for ALL the great blogs

My only other suggestion is to add a more user friendly discussion forum.

In Energy efficiency and durability | Asked By John Brooks | Jan 22 10

0 Answers

I live in NYC. Where can I get LEED accredited??

I'm interested in consulting Green projects.

In General questions | Asked By Stephen Smith | Jan 22 10

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