Q&A: A Forum for Green Building Experts and Beginners

[Click map to enlarge]

Please register for a free account or sign in to ask and answer green building questions.

The usual rules of courtesy apply:
1. Be nice.
2. If you can't be nice, be polite.
3. If you can't be nice or polite — well, please be brief.

To attach a photo or illustration:
Under the box labeled "More explanation," look for the words "File attachments."
Click that, and you should be able to attach a photo.

Thanks for joining the conversation!


14 Answers

What do you think of this floorplan?

I'm wrapping up the design stage of a PassivHaus-compliant two-story 1800 sq.ft. home [1] in Salt Lake City (6B) and if any of you have a few moments to review the floor plans, I would be delighted to get some of your feedback, within the context of the project [1]:

http://1010-design.blogspot.com/2012/07/take-iii.html

Here's the first story floor plan:

http://3.bp.blogspot.com/-KcpLa4Mz0Fc/UBRAH3GPd2I/AAAAAAAACvw/lMV7Izk3t4...

and here's the second story floor plan:

In Plans Review | Asked By Jan Nielsen | Aug 22 12
53 Answers

Talk us "in" or "out" of our Catherdral Ceiling Rehab Plan?

Aloha,

Been doing a lot of reading on this wonderful site. Our Location: Upcountry Maui - 3000' elevation where we have high humidity but cool climate. We hit dew point most nights of the year.

In General questions | Asked By Charlie Chandler | Jun 28 12
1 Answer

Notification of website problems

It would be helpful if you could post something that would inform everyone about the problems you are having and an expected fix date.

In General questions | Asked By aaron gatzke | Sep 14 12
2 Answers

Crawl space insulation installation. Bids include spray foam and fiberglass

Home built in 1962, without insulation in crawl space below the floors. I have bids for R-19 closed cell spray foam, or fiberglass. The area is Seattle. Any advice? Thanks.

In Energy efficiency and durability | Asked By Caroline Orr | Sep 14 12
2 Answers

Dew point calculation vs location of air barrier.

The dew point at the first condensing surface often is considered important in judging the robustness of a wall design. In the case of adding external insulation, a minimum thickness is required to keep the sheathing above the dew point.

The dew point, as far as I have seen in discussions, has been based on that of inside air at room temperature and some appropriate relative humidity. This gives a "safe" answer and would seem to assume one of two things.

In Energy efficiency and durability | Asked By Dick Russell | Sep 14 12
2 Answers

how to order a trusses

pre eng roof trusses

In General questions | Asked By juan godoy | Sep 14 12
0 Answers

GBA is reviewed by El Nuevo Constructor

Sergio Grado of El Nuevo Constructor has published a review of the GBA website.

Sergio wrote, “Este sitio es mi primera parada cuando tengo unos cuantos minutos libres. Contiene videos, reseñas de productos y esquemas detallados de los que puedo aprender mucho. También contiene un blog en donde se discuten distintos temas sobre construcción.”

In Green building techniques | Asked By Martin Holladay | Sep 14 12
6 Answers

Peel & stick - Under or over the strapping

I'm in the process of building a thick foam covered wood framed house.
It's a 2x6 wall with 2.5" of XPS, followed with 1.5" of polyiso foil faced and taped. In order for me to apply my vinyl siding i need to add 1x4 strapping and 2x10 windowbucks as the foam is so thick

I'm uncertain on whether of not to put the peel and stick membane over the 1x4 strapping or under?
My windows are new contruction and have nailing flanges

I have included a picture of what is going on... if i go over the 1x4

In General questions | Asked By Brian Krmpotic | Sep 10 12
1 Answer

What is the perferred way to ventilate a basement?

I built a house in VT zone 6A. The unfinished basement has a musty smell to it. The 2 floors of living space are fine.

I only have 2 (1'x2') basement windows in the east side of the house. I'm planning on finishing the basement and looking to install a HRV ventilator for the basement only. The house is heated with radiant floor heat and wood stove. Basement is 1,400 sq ft.

In Energy efficiency and durability | Asked By Tom Tyrrell | Sep 13 12
6 Answers

Why would there be 2 air returns in a bedroom with only 1 supply?

I recently purchased a tri-level home built in 1962. It hasn't seen a lot of love over the years so I'm trying to make some cosmetic improvements before moving in. In each of the 3 bedrooms there are 2 air returns, one near the floor and the other directly above it about 6 feet up, on the wall opposite the supply registers. For aesthetic reasons I would like to close off the upper returns but hesitate to do so without understanding why there are 2 of them and is closing one an OK thing to do. Any advice would be appreciated.

In General questions | Asked By Sue DeChant | Sep 6 12
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!