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!

18 Answers

I am part of a volunteer fire dept in the NEK of Vermont and we are building a new firehouse. We want to build it as energy efficient as possible since it gets used seldom (hopefully). Just a little different from most homes around since it's only heated to 55 not 70.
Our plan is the following from inside to outside

5/8" Sheetrock
Poly Vapor Barrier
2x4 stud wall with fiberglass insulation
Double layer of 2" Green Guard staggered joints
2x4 stud wall with fiberglass insulation
5/8 Advantec Sheathing
Typar Housewrap
Vinyl Siding

In Green building techniques | Asked By Dana Patoine | Jan 5 12
43 Answers

I don't like it.

When those pictures of Dr. Joe's barn roof went up in another thread, I thought once again of the foam layers in my yard and wondered, once again, when I was going to start to see a problem.

In General questions | Asked By Minneapolis Disaster, 6B | Jan 6 12
47 Answers

Queensland is under water, the East coast of the US us being buried again by snow, cancelled flights and power outages.

It's snowing fast and furious here in north central Vermont (that's a 13" ruler on top of my side porch woodshed).

What's the weather like where you are?

In General questions | Asked By Robert Riversong, Master HouseWright | Jan 12 11
3 Answers

I live in New York and have my woodshop in a 3 car garge (approx 20' by 25') attached to the house. The garage abuts the house on 2 sides. One of the other sides I beleive has basic fiberglass insualtion (2x4 wall) with 2 windows and the entire front are insulated firerglass garage doors. During the winter, it gets so cold in there that I cannot work. I have tried electric heaters, but they must run for hours before it is even close to tloerable and they obviously suck a lot of juice. I also tried Kerosene heaters, but the combination of the fumes and the moisture make it a no go.

In Energy efficiency and durability | Asked By Richard Cohn | Jan 9 12
2 Answers

I've got a very simple, steep pitch, vented gable roof, with soffit vents at the eaves.
I've considered standard gable vents, but want to keep my rainscreen detailing to a minimum.
I'd like to avoid ridge vents.
Does anyone have any advice or experience with soffit vents at the gable end?

Thanks for your help,

In General questions | Asked By Richard Baumgarten | Jan 8 12
2 Answers

I was wondering, what would you all consider to be the "greenest" drain pipes? I'm not doing a plumbing job, but I was just curious.

In General questions | Asked By Jay Sheth | Jan 7 12
4 Answers

I'm looking for water heater replacement options. Currently unit is a Takagi propane tankless. It's installed in the unconditioned attic due to space constraints inside the house. As part of insulating the attic with much thicker insulation, I need to move it from its current location and would need to re-run the vent if the unit is reinstalled, necessitating some new parts (this is stainless flue material, and fairly expensive).

In Mechanicals | Asked By David Meiland | Jan 7 12
8 Answers

I am in my final push of re roofing. Martin, Thank you again for answering my earlier questions.

My cathedral ceiling timber frame from inside out has:

tongue and groove
vapor barrier


tongue and groove
vapor barrier
Metal Roof

We tore the shingles off to find a fair amount of air leakage and are strapping and adding venting to the assembly.

In General questions | Asked By T White | Jan 7 12
3 Answers

Goddess knows how this wonderful structure escaped the eagle eye of UK Building Regulation enforcement, but there is mention of beer brewing and that may have helped. Aficionados of creative structural design will enjoy the 'reciprocal roof' - click on 'How' and then 'Roundwood Frame'.


In Green building techniques | Asked By James Morgan | Jan 7 12
1 Answer

Smell in attic from polyurethane foam soray

In General questions | Asked By Judy Gross | Jan 8 12
Register for a free account and join the conversation

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