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!


19 Answers

Polyiso on interior

Martin/Dana

Living in the Bellingham area north of Seattle it can get cold. The house was heated by propane, it was a cost that was hard to get hold of especially with some of the design of the house. (high ceiling)

I set out to improve the insulation of the home taking bits and pieces off the internet as to the techniques available these days.

I am a bit "OCD" now that the living room is for the most part done "I have some hidden inward worries". I wonder if I am trapping moisture inside my walls having used the foilfaced polyiso just behind the sheetrock.

Asked By William Lucrisia | Nov 21 14
38 Answers

Seeking an air-to-water heat pump

I'm looking for an air-to-water heat pump and feedback from those who've used them. We have a LEED for Homes project in Victoria, BC, perfect climate for heat pump, affordability of project prohibits groundsource for 36Kbtu heat loss of 1800 ft2 home and for optimal comfort, low temp/efficiency, to avoid ducting we're selected hydronic in-slab for heating distribution thus standard air-to-air heat pump is a no-go.

Asked By Allison Ashcroft | Jul 28 09
13 Answers

Insulating an uninsulated Cape-style home (cathedral/knee)

Hi all, new member here; new homeowner too.

Asked By Nathan Schulte | Nov 20 14
19 Answers

Detail for stone veneer

I am looking for a wall framing detail that includes a stone veneer face over 1" ridged insulation. It seems to me that after a rain screen detail over the rigid, the next surface would be OSB or plywood that metal lath would be adhered for applying the stone veneer? So the assembly would be 2x6 stud wall, OSB, WRB, 1" ridged insulation, rain screen (lath, Coravent, etc), 1/2" plywood, metal lath, stone veneer.

Asked By Robert Holland | Nov 16 14
3 Answers

ICF & window areas WITHOUT wood bucks

I observed an ICF build that did NOT use wood window bucks for the window areas. They used some temporary wood shoring but once the shoring was removed the window area was all raw concrete and ICF/EPS foam. The windows will be installed directly into the concrete using concrete screws and window brackets. The windows will be installed halfway in the window area or otherwise known as an "innie" window.

Asked By Peter L | Nov 22 14
4 Answers

Designing a passive solar / net zero house in NC Mountains

My wife and I are designing a new mountain home in Banner Elk, NC. We are in the initial design stages with our architect and are confused by the numerous options to consider. Our house will be built in the Eagles Nest community which has a pacific northwest lodge feel. Our home site is at a 5,000 foot elevation on the mountain ridge with a northern view.

Asked By bill Moseley | Nov 23 14
3 Answers

Rigid polyiso in side attics?

As a spray foam alternative, I'm considering using continuous rigid foam along the 32ft long x 7ft slope in my side attic and just spray foaming in the lower joist bays and places where taping is difficult. The attics are about as simple as can be with no dormers or other obstructions. I will need 8" of polyiso to meet my disired R-value (R-48), while keeping the 2x4 rafter bays wide open for ventilation. There are also HVAC ducts and plumbing in the attic, which is why I'd like to convert it conditioned space.

Asked By Ryan Griffin | Nov 22 14
1 Answer

Heat-pump water heater in conditioned space

I am building a net-zero energy home to Passive House standards in the Seattle area. The best scenario for a heat pump water heater is in an attached garage, unheated basement or in the conditioned space of a house in a humid heating climate (why doesn't everyone in Florida own one?). Unfortunately, my only option is within my conditioned space in a heating climate. My heating system will be a ductless minisplit air source heat pump. I would prefer to not remove the heat from my utility room only to make my heating system work harder.

Asked By Gerald Blycker | Nov 24 14
1 Answer

Round window flashing and water management

I have a situation with a remodel on a 1970's house with one round window that was replaced. The new window is installed, and the company had me replace siding and trim around the window. The window is an aluminum clad round (well, round with a flat section at the bottom, roughly 4" above where the siding stops).

We started out by installing sheathing on the wall- it had been built with no sheathing- it's a complicated wall with two round windows, and there are custom steel brackets holding everything in place (sort of).

Asked By lavrans mathiesen | Nov 23 14
1 Answer

Any good thoughts on Drolet wood stoves?

A relative is asking about efficient wood burning stoves. Any thoughts. I would never burn wood outside an occasional campfire using up leftover 2x4 cut offs. I told him any Canadian company can't be all that bad and it the 2000 is EPA rated whatever that means...

Any recommendations would be greatly appreciated.

Thanks,
PK

Asked By Paul Kuenn | Nov 23 14
Register for a free account and join the conversation


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