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4 Answers

I am looking for product information on a structural block called FASS.

Thank you for your responses. I have received the information I needed to formulate my presentation. I have removed this post because I don't want it to negatively effect anyone's perception of products they may use or are using. Thanks again for your input.

Asked By Jason Butler | Feb 25 13
16 Answers

rStud insulated 2x6 studs

Although not as effective in eliminating bridging, the rStud 2x6 looks interesting in lieu of external rigid foam over OSB sheathing based on local area construction practices.  Have any technical reports been published as of yet that anyone is aware of regarding results with the product?  Curious as to its strength & performance when compared to traditional 2x6's.  Interesting option to consider with Zip exterior sheathing and good air sealing followed by a blown in insulation such as Manville Spider.

Asked By Milan Jurich | Feb 21 12
3 Answers

Has anyone heard or experienced any down side to using pumice as a building material for the floor or walls?

I am thinking of building with a 12 part pumice to 1 part cement mix as wall material with standard 3 layer stucco cement as wall covering . I heard New mexico pumice had possible radon emissions ?
I am wondering about moisture condensation inside of wall at the dew point leading to mold ?
I live in western oregon with high humidity ,the pumice would come from our abundant pumice fields.
pumice can't rot can't burn and has 1.5R per inch .
The only down side I see is there are no codes for pumice and would need to get an engineers report for earthquake stability using rebar.

Asked By keith schneider | Jun 25 10
154 Answers

Out-gassing of bad stuff from spray foam insulation

Hi folks,
We are in design for a new home for a chemically sensitive family. It's looking like the best approach for insulating this house will be spray foam to the underside of the roof deck, and treat the attic as part of AC space. However, my customer is concerned about the potential for the family breathing in bad stuff that gradually out-gases from the foam over time. I need to respond to that concern with specific information that is well backed up. I'm beginning my research with you guys. All advice welcome.

Asked By Dan Fette | Sep 3 09
12 Answers

Should we replace my old cedar roof with composite shakes?

Our cedar roof is going and we need to replace ASAP. I'm tired of the ongoing maintenance of cedar, but my husband and I love the look.

We're looking into composite shakes, which claim maintenance free and lifetime warranty. Anyone have any suggestions or first-hand experience with this stuff?


Asked By Jenna Guffy | Oct 7 10
12 Answers

Passive house exterior door for reasonable price?

Has anyone come across an exterior door that provides good insulation and beefy frame that's worthy of a super insulated home but comes at a reasonable price? Any suggestions would be appreciated.

Asked By Matthew Michaud | Feb 4 13
3 Answers

Is there an electric system that can heat water for radiant floor heat, domestic hot water and air conditioning?

I am constructing a new 1000 sq.ft single story with 6' crawl space. Two bedroom, 1 1/2 bath cottage. I would like to have electric solar panels on the roof to offset 90 - 95% of the load. Does this sound doable? I have unobstructed S SE exposure and can fit approx. 20 panels on the roof. This is on Long Island New York

Thank You

Asked By Michael Kinney | Feb 15 13
1 Answer

Spray foam insulation

We will be building a new house this spring and are concerned about using closed cell spray foam insulation as spec-ed by our architect due to potential health risks. Even though the manufacturers say it is non-toxic and safe, there seem to be many people out there who have found otherwise.

Can anyone recommend a product that is safe to use, non-toxic and affordable?

Asked By Shepherd Smith | Feb 15 13
4 Answers

Alternative for White Kraft Faced Foamboard

Hello, we currently are using 1/2"x4'x8' White Kraft Faced Foamboard. I would like to use a environmently friendly product. Does any one know of an alternative for this product. We use it to pack doors for protection. Let me know. thanks.

Asked By Susan Kolletzki | Feb 12 13
2 Answers

R-value of high density urethane?

Anybody know the approximate r-value/inch for high density urethane (HDU) board? This is the stuff used for sign board or other carving. I've found it in densities between 10-30lb/cf., in blocks, sheets, etc. It can be readily machined, glued and is waterproof. I used to use it for product design prototyping years ago. I don't think it is typically used for insulation which may explain why I can't find any r-data on it. I was thinking it might serve well for door cores or rigid thermal break applications.

Thanks in advance.

Asked By Andrew Thompson Zone 3a | Feb 8 13
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