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1 Answer

Aeroseal duct sealant

Hello. My heating and air tech recommended aeroseal to repair leaking duct-work in our walls. We are going to replace duct-work in our attic but looking to this product so we don't have to tear out walls. Does anyone have any experience with this product? It says that is is low voc and a non-volatile vinyl acetate. I realize that sealing small holes is good for using less electricity and producing less dust which in turn produces better air quality but if aeroseal off gasses and eventually degrades overtime then am I just breathing in a different type of pollutant?

Asked By Lori Wilson | Jul 27 16
7 Answers

Off-grid weather station to measure build site conditions

I've purchased vacant land in hilly terrain and will be building a residence and workshop next summer.
I'd like to setup a solar or battery powered weather station to learn more about the microclimate.

Knowing, e.g., typical temperature and humidity swings on the site will help me answer questions like: "how much insulation does the workshop need to prevent condensation / rust on tools?"

Does anyone know of an off-the-shelf battery or solar powered weather station that can measure temperature, humidity, and wind speed?

Asked By Kevin Lynagh | Jul 26 16
4 Answers

Blown-in insulation for existing walls

My circa 1900 house in West Virginia (Zone 5) has hardwood paneling throughout the interior and wood siding on the exterior with no insulation in-between the actual 2x4 walls. I'm pondering either blow-in cellulose or open cell spray polyurethane foam applied through holes in the siding. (Should I consider other options?) Both open-cell SPF and cellulose show an R-value of 3.2 to 3.8/inch. I understand the cellulose will settle over time leaving some gap at the top and foam will not. I like the idea of an air barrier provided by SPF between the leaky wood interior and exterior surfaces.

Asked By Andy Kerr | Jul 25 16
3 Answers

Open-cell foam and airtightness

I've seen reports from the foam manufacturers touting how much better the foam is than fiberglass of the same R value. They're essentially using the improved airtightness of the foam to show better performance compared to fiberglass with no air barrier. I can see it's mostly BS. I am wondering if you have a proper air barrier if open cell foam can measurably increase the air tightness of the structure?

Asked By Brad H | Jul 25 16
2 Answers

You told someone that they could patch open cell foam insulation with

You told someone that they could patch open cell foam insulation with spray insulation from the hdw store. The spray "stuff" that I am familiar with is of the closed cell variety. Is it that to which you are referring? Please advise, as I have some holes that need repairing.

Asked By Kenneth Sayers | Jul 21 16
8 Answers

Deck frame: cedar vs. steel

I am interested in opinions on whether northern white cedar is a good material to use for a deck frame. I've heard opinions that it actually lasts longer than pressure treated pine, but also doubts about using it structurally. I would protect the tops of the joists with some kind of flashing, as that seems to be where wood decks rot, and upsize the joists as called for in structural tables for the lower strength.

Asked By Charlie Sullivan | Jul 21 16
0 Answers

You told someone that they could patch open cell foam insulation with

You told someone that they could patch open cell foam insulation with spray insulation from the hdw store. The spray "stuff" that I am familiar with is of the closed cell variety. Is it that to which you are referring? Please advise, as I have some holes that need repairing.

Asked By Kenneth Sayers | Jul 21 16
1 Answer

Does Low-e glazing affect plant growth?

There seems to be an ongoing discussion about this subject and not a final conclusion yet, I imagined maybe somebody on this forum could know better.

Asked By Jose Castro | Jul 21 16
1 Answer

Any new insight on Air Krete?

I've read the other posts, which are a few years old.

Does anyone have any new advice or guidance using the product? I have a client that is interested in the product. Specifically looking for any known issues or installation advice.

Thanks!

Asked By Cliff kornegay | Jul 20 16
4 Answers

T1-11 — overlay or replacement?

My 1979 T1-11 plywood sheathing has suffered what Martin has called similar to not drying faster than rate of being wetted. My intention is to overlay rather than replace simply because, if we can reduce the inrush of moisture and increase the drying potential, the labor of removing (organic) mass is not warranted. This is a (2) two story DOE #3 moist home. So--Here is my question-- Is there a concrete type (Hardie like) panel that lines up with the T1-11 reverse board and batten pattern, because I don't want to overlay /replace the upper panels that are appearing good?

Asked By Charles Thompson | Jul 11 16
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