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16 Answers

Air Sealing - Tape, Sealant?

I am looking at the articles here about air sealing and most of them provide information such as where to seal but the products are not so easily determined. I am planning on taping either the OSB Seams before house wrap with 3M All Weather tape - or possibly only taping the house wrap seams. (as long as I get the right tape that doesn't allow problems with taped horizontal seams)

Asked By Nicholas C | Jul 29 15
1 Answer

Anyone familiar with Insultex house wrap?

I was wondering if anyone had any thoughts on this house wrap - http://www.insultexhousewrap.com/

They appear to be making some exaggerated claims and I am not certain that the R-value claimed would be possible.

Any thoughts?

Asked By Marcus Sheffer | Jul 31 15
15 Answers

Proper way to detail bottom edge of rigid foam next to sill plate

I am going to be installing 2" of rigid foam over my OSB sheathing soon and I have two concerns. The current one is what is the most DIY friendly method to protect that bottom edge of foam that is under the siding, but next to the ground near the sill plate? I want to prevent bugs of course, but also keep moisture out too. I see videos of pros using aluminum flashing but they have fancy breaks and coils of it. Is there a DIY alternative? Local supply store would be Menards if there is a certain product to suggest. Thanks.

Asked By Nicholas C | Jul 25 15
2 Answers

Wet cellulose blown-in insulation — is mold a concern?

I am building a house in Kansas City, MO. The brick contractor did not flash the windows properly and the cellulose blown in insulation has taken on some water. Moisture readings in the walls are 25%-35% with a normal of 15%. Windows are being flashed properly to prevent future water leaks. Will there be a mold problem with the cellulose blown in insulation or does all of the wet areas need to be removed and reinsulated with dry insulation?

Asked By Stevee Busser | Jul 25 15
25 Answers

What's the range of window air leakage values for good-quality US windows vs. garden-variety vs. Passive House-quality?

It's very hard to find published window air leakage rates (in cfm/ft2), harder still to get independent test reports with this information. So far I've found the following data points:
* a maximum of 0.3 for all of one US mfr's product line (in an internal manual);
* .02 for a tilt-turn unit by same mfr (from independent test report);
* .003 for a Canadian mfr's tilt-turn unit (from website literature).

I've also been told that the test apparatus doesn't yield a result smaller than .01.

Asked By Ann Edminster | Sep 19 09
1 Answer

Need to know how good Prodex insulation is for under metal roofing?

Thinking about using Prodex insulation under metal roofing need advice.

Asked By Troy Tubbs | Jul 16 15
7 Answers

Chemical smell in a new construction crawl space

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
1 Answer

Intus finishes: Any chemists or PVC film experts out there?

About to get quotes for 2 jobs on Intus vinyl windows. Never heard of this technology and its pretty amazing how dark they are offering for some of their exterior color selections in vinyl. I will recommend staying on the lighter side to be safer but does anyone have any opinions on this film technology and color choices that Intus is using?

http://www.intuswindows.com/products/windows-u-pvc-arcade/

Click on "colors" for description of the film technology.

Asked By Brian Knight | Jul 2 15
1 Answer

Is a rubber/foam product a good choice for flooring underlayment?

Hi, Is a recycled granulated rubber tire and high density frothed polyurethane foam product on the market the best underlayment for a 2nd story 1883 farmhouse condo with plywood on top of sub floor where I am installing solid oak hardwood (2 1/4" strips)?
I like it because it has much published technical data that I can show my neighbor in the condo below where we are both interested in sound silencing. I thank you kindly for your expert advice.

Asked By Mary Schwaba | Jun 26 15
3 Answers

Linoleum over slab with a layer of insulation - Kerdi-board

My daughter's school (Vermont) has the pre-school on the walk out basement level. The floor is old vinyl tile directly on an uninsulated slab. The floor is cold in the winter and condensation is an issue in the warmer months. Donated carpets are changed out periodically and we did a whole building Air exchange system which improved air quality quite a bit. Headroom is an issue on this floor.

Asked By Robert Swinburne | Jun 22 15
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