Community: Green products and materials

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3 Answers

Hi folks, great site.

I have a crawlspace in a new house that smells of chemicals. The dirt floor is sealed with a vapor barrier and the walls have Spray Foam Insulation. The space is pretty airtight.

My ERV was installed incorrectly (another story) and sometimes the smell from the crawlspace comes up into the house. Makes my eyes burn, and it gives me a headache. Hopefully that will be fixed this week!

Should I be able to smell the foam 2 months after it has been installed?

Asked By Brett Michaels | Sep 1 14
19 Answers

I would like to decide on putting in solar panels to reduce energy costs.

I have read about the next generation solar panels not being to far off.

Question: Would it be better to install current solar panels or wait for the new type that will be coming shortly?

Asked By John Alberti | Aug 26 14
4 Answers

I keep hearing the term "acoustical sealant" in the context of air sealing, as in "use acoustical sealant for air sealing because it remains flexible", but am a little bit confused as to what it means. Does it refer to:

  1. Tremco accoustical sealant, the specific product?
  2. Any caulk or other sealant that exhibits the "remains flexible forever" property?
  3. Something else entirely?
Asked By Aaron Birkland | Aug 29 14
8 Answers

We are doing rigid foam on 4500 sq. ft. of exterior walls at 4" thick and 4500 sq. ft. of roof at 8" thick in a REMOTE application.

We are attempting to find the best value for our exterior foam insulation.

So far the best value ($26 for 2"x4'x8') we could find was NeoPro TK. Seems to be a new product so not a lot of info on this "revolutionary" new material. http://www.permarproducts.com/insulsheathing.html

Our previous first choice was Foamular 250 http://www.foamular.com/foam/products/foamular-250.aspx, until we started getting quotes ($34 for 2"x4'8').

Asked By Eric Burhop | Aug 20 14
2 Answers

HI all

Thanks to Dana and Martin (and others) for earlier comments and guidance on my new house build. To be filed under the you cant make this $hit up, it burned down right before we moved in (VOC spontaneous combustion - re stain rags on the pine ceiling/walls really can occur).

soooo, we get to take apart what we just built and analyze it. and improve upon it the next time (deconstruction under way now, framing to start about labor day).

Asked By pat rowland | Aug 18 14
1 Answer

Hi everyone,

I'm looking at caulking the corners of the floor of my tile shower and looking into using AFM Safecoat Caulking Compound vs Eco-bond kitchen/bath. Has anyone had any experience with either product and would you recommend/not recommend either?

thanks!
Lee

Asked By Lee Taylor | Dec 30 13
3 Answers

Anyone know if there a significant difference in quality and/or price between Roxul batts and Thermafiber batts?

I've ordered Roxul Comfortboard (for the exterior of the house) which is being shipped from Ontario to western Wisconsin. I now see it MIGHT be more convenient to source Thermafiber batts (for the interior) in this part of the country.

Thanks,
Ed

Asked By Edward Krause | Aug 9 14
1 Answer

Air Krete seems like an incredible product. Everything about it sounds great. R-value of 6. Inert. No VOCs. Fire Resistant.

How many builders, retrofit contractors are using this?

It does not appear to be widely popular but it seems like a dream come true.

What am I missing here?

What's the catch?

Asked By Reuven Walder | Aug 7 14
9 Answers

I'm buying recycled 4" XPS to go under the slab for my new house in zone 6 Maine.
It wasn't as easy to find as I had expected, so when I found some, I ordered it. It gets delivered next week, but I probably won't need it for a few weeks or a month. Will it be OK to stack it on some framing lumber on the ground at the building site until I need it? I could throw a tarp over it if needed. I could put it in the barn, but then I'd need to move it again.

I assume a little moisture won't hurt, but I want to be sure.

Asked By stephen sheehy | Aug 5 14
5 Answers

I live in Cambridge Massachusetts. I need a point-of-use tankless water heater for 1 bathroom sink. I will use the hot water for about 5 minutes at a time. What is the correct size? Can you recommend a brand?

Asked By Eve Schlapik | Jun 9 14
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