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10 Answers

Crawl space wall insulation

I am trying to get my new build R2000 certified. One of the things the R2000 consultant would like to see is more insulation in the crawlspace wall.

In General questions | Asked By erik olofsson | Jan 9 13
2 Answers

Hello! I am a learning sustainability student and am inquiring about photovoltaic panels and which kind/size of breaker box to use.

If there is a link or explanation about breaker box size and PV arrays, I would truly appreciate it. I will look through the forums and internet sources, but am so grateful for the knowledge that is found on this wonderful site!! Thank you so much for your support, I truly value it and so does our organization, and the Earth.

In General questions | Asked By Evergreen State College | Jan 9 13
5 Answers

Triple-pane windows

Good morning Martin,

I have been reading your articles online regarding windows for homes and have learned a lot over the last month from you. I live in Toronto, Canada and in November 2012 I had all the windows replaced in my house, brick to brick triple pane windows 1" and 3/8 with Cardinal low e 272 coatings on panes 2 and 4.

In General questions | Asked By John Barbuto | Jan 9 13
2 Answers

Tiny House Building for Chemical & Mold Sensitive Person

My Son-in-law is building a tiny house for me.

I am really concerned about the insulation to use and putting vents in the eves or not, I've not seen people doing this on any of the build videos and I don't know why, my SIL wants to put in vents. There will not be attic space.

It is normal house construction with the the greenest materials I can afford on my limited budget.

It will be a gable roof, no fancy buildouts in the roof just a straight gable, loft for company to sleep in and open over the living room. We are going to use a metal roof.

In Green products and materials | Asked By Victoria M. | Jan 9 13
7 Answers

Heat pump water heater + AC + refrigerator combo, someone?

Only wishful thinking ,

has any commercial products come up with a combo of any of the floowing items ??

- heat pump water heater ( tanked )
- heat pump AC
- heat pump heat
- refridgerator/freezer ??

I don't know why, but i think i recall looking at a product a few years ago that
comboed AC and water heater ??? can't find it anymore

what about water heater and refridgerator ?

I'd say, if use the heat generated by refridgerator/freezer pump,
would it make enough to hold up water temp in a tanked WH ??

In Energy efficiency and durability | Asked By Jin Kazama | Jan 7 13
4 Answers

Wall detail for vertical siding

I am building a 2-story cottage in NH. It is 2x6 framing on 24 inch centers. Covered with 1/2 sheathing grade plywood. Then covered with Tyvek (seams taped). I plan on covering this with 1 1/2 foam board, then using horizontal furring strips on 24 in centers fastened over the foam board into the wall studs.

I will then fasten 1x12 shiplap siding to the furring strips. This will also create an air space behind the siding to allow for moisture control. Any opinions on this detail would be much appreciated.

In Green building techniques | Asked By Raymond Klinger | Jan 8 13
1 Answer

What are the chemicals used in GeoExchange?

Specifically, what are some common fluids used for circulation through the loops, and why? what properties make these liquids good for this purpose? Also, what are the refrigerants used for heat transfer from the liquid being circulated to the heat pump?

In Green products and materials | Asked By Louisa Murray-Bergquist | Jan 8 13
4 Answers

Rainscreen behind cedar shingles

I'm very comfortable using strips of wood ( usually ply) behind lap siding and it SOP for me. I haven't done it with shingle yet. Can I assume that I nail up the strips horizontally and leave some gaps here and there so air and water can flow? Any detailed drawings or better instruction that i can check out?

I could also go with cedar breather ( spun) but not sure if that's more expensive or not. I plan to try and push for using poly-iso boards on the exterior if I can get the client to budget for it.


In Energy efficiency and durability | Asked By Steve Greenberg | Feb 24 12
21 Answers

Basement next-day headache stumper

Hi all,

I've hesitated to ask this question because I don't know how weird the thread will get ... but what the heck.

I've recently been spending more time in the basement. I've been typically finding that the next day--not the same day--I feel headachey, knotted, sore, vaguely ill, etc. While we can't possibly solve for all the unknowns here and I'm not asking for medical advice here, my best guess is that there's something in my basement. Maybe I'm wrong, but maybe not.

However, I'm stumped on what I'd mitigate.

Here's what I don't think the problems are:

In General questions | Asked By Minneapolis Disaster, 6B | Jul 26 12
2 Answers

Tremco ExoAir Trio substitute

Is there a less expensive but just as effective way to insulate, air and water seal window installations? I like the Tremco product but cannot justify paying >$300 per roll on my larger windows applications. Does low expanding foam sealant in a can work just as well? Thanks.

In Green products and materials | Asked By Matthew Michaud | Jan 7 13
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