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!


7 Answers

Panel-type ‘vapour barriers’ and the British Columbia building code

Is anyone aware if there is a provision for the use of panel-type vapour barriers, e.g. OSB, in the most current B.C. building code book?

I guess I am referring to the 2006 edition, as I am not sure if the 2012 edition has been released yet.

Thanks!

In Building Code Questions | Asked By erik olofsson | Jan 30 13
2 Answers

Do you have any examples of framing out a door to accommodate a fan for wood stove heat distribution?

I am replacing an interior door for a bedroom next to our living room (where the stove is located). We'd like to keep the door closed at night but provide wood heat to that room. The 83" ceiling does not really allow for a transom - The door header is right up to the ceiling. I thought of framing out a section of adjacent wall or side trim to fit a small door fan to blow air into the bedroom and the space under the door would allow cool air back to the living room? Any other ideas?

In General questions | Asked By Scott Maslansky | Jan 31 13
1 Answer

Is it possible to install rigid foam (polyiso) directly over old wood clapboard siding, without removing most of it first?

I will be removing the vinyl siding on my century old house before installing the polyiso, but unfortunately there is quite a bit of very old wood clapboard siding underneath that as well.

In Green building techniques | Asked By Anthony Zitelli | Jan 31 13
3 Answers

Leaking ceiling when weather shifts from cold to warm

I have a small addition attached to my house, 10 x 15, with the ceiling height to the ridge of 12 ft.
It is approx. a 6 pitch with a Cobra raised ridge vent. It has ice and water and 30-lb. felt with 50 yr Owens Corning architectural shingles that were installed 3 yrs ago.

The roof seems to be alright and I believe the problem is inside (moisture leak due to humidity).

No leaks through hurricane Sandy or rainstorms throughout the summer. Only leaks when it goes from extreme cold to mid 40s and low 50s.

In General questions | Asked By Tim Smith | Jan 31 13
1 Answer

What is the best way to build and insulate a bay window in new construction?

I have two bay windows to build and I want to keep the insulation levels consistent. I using 1 1/2 exterior rigid foam with lap siding on the exterior and 2x6 framing

In GBA Pro help | Asked By Dan Easton | Jan 30 13
6 Answers

Exterior XPS sheathing over exterior 2x2 stud walls - good idea or not?

Hi Everyone,

New to this website, wonderful discussions and information!

In Energy efficiency and durability | Asked By Joe Antis | Jan 30 13
18 Answers

Making an old house super efficient

I'm in the process of deciding whether to take a mortgage, and build a new home on a piece of land I have been offered...or fix up an older home, built in 1942. Completely strip it and gradually work on it.

In Energy efficiency and durability | Asked By Nic C | Dec 2 12
24 Answers

How to stop a Cathedral ceiling from sweating

Newly constructed home in upstate New York (Cold Climate) with cathedral ceilings throughout. R38 paper faced batts with Sheetrock and T&G pine cover the entire ceiling. After the long winter months have past the warmer weather causes water to come streaming down the inside of the valleys and down the walls for at least 5-6 hours. A roofing contractor said it was caused by ice damning so I replaced the shingles, s&i guard etc. in both valleys and I had a leak this past Sunday afternoon (no rain or snow). I don't know what to do besides rip down the ceiling and spray foam.

In Interior design | Asked By scott davis | Dec 6 11
6 Answers

Accu Vent Baffle Installation Detail Questions

I’m installing Accu-Vent baffles in a new construction home and have a few questions concerning installation details. Background: Climate Zone 4A, 8” raised heel trusses, 4.5:12 pitch roof with flat ceilings (although a small portion of the house has a 2:12 vaulted ceiling), R-60 cellulose on the ceiling. I am foaming the edges of the Accu-Vent to the trusses to minimize any air leakage up to the roof sheathing.

In General questions | Asked By David Baca | Jan 30 13
1 Answer

The "Adjustable Window Buck" Challenge

I have had this thought for some time, since delving into the 2nd rounds of the deep energy retrofit work here at NYSERDA. We know the work is important, we know it makes sense, and we know it costs a lot to do it. One of the lacking ingredients in the deep retrofit work is a “technical device” that people actually can see, since most of the work is just “brute force labor, good building science, and hard work”. One of the technical devices that I feel could help “propel” some of this work is a “dynamic, adjustable window buck”.

In Energy efficiency and durability | Asked By Martin Holladay | Apr 11 12
Register for a free account and join the conversation


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