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1 Answer

Tapes for air sealing between concrete and foam or wood/OSB

Looking for some suggestions on type/brand of tape to use, or whether these applications are even feasible or recommended ....

We have several details where I'm considering using a tape to air seal between concrete and another substrate - wood, OSB, foil facing, polyiso foam, possibly also canned spray foam.

In Green products and materials | Asked By William Costello | May 27 17
5 Answers

How does someone cancel subscription when there seems to be no way out??

Could someone guide me in the cancellation of membership? it doesn't seem like it is possible to do so.

Thank you

In General questions | Asked By James Someone | May 27 17
3 Answers

Insulating an attic-based minisplit indoor unit & ductwork

Our home has a newly installed Mitsubishi ducted minisplit. There are now two ducted units in the attic: both the "Concealed Slim Duct" SEZ-KD12NA (there is a 3rd unit within the conditioned space that I'm less worried about). After a long-fought battle with my wife, the indoor units were installed in our attic. I know doing this was dumb but aesthetics won out over efficiency. I've posted on this forum separately about moving the conditioned space to the roof rafters. $60K bids basically killed that idea, at least for now. Right now I just want to band-aid the problem.

In Green building techniques | Asked By Brian Gray | May 26 17
3 Answers

How can I effectively resolve an issue of next door neighbor's cigarette smoke seeping into my apartment?

My neighbor's door is perpendicular to mine and about 8 inches from mine. Our apartments, long ago, used to be one big apartment before it was divided into two. One of my walls, that was used to divide the once larger apartment, is adjacent to my neighbors. I have lived here 38 years and would hate to move because of some smokers who have moved in next to me. I have asthma and my children seem to be developing it as well. By the way, I have four high-end air purifiers but they are noisy and dramatically run up my electric bill. Please help.

In Energy efficiency and durability | Asked By user-6855474 | May 26 17
1 Answer

Vapor Barrier when using Excel II as Air Barrier

We're retrofitting a bungalow in Toronto, we're using Excel II as an air barrier. We want a green product for a vapor barrier. What's the best product? Would it make sense to use a Blueskin VP as a house wrap?

In Green products and materials | Asked By Thomas Kaempfen | May 27 17
7 Answers

Retrofitting garage to a heated shop - slab and wall details

Hi all.

I am soon to be owner of a house with an attached garage, roughly 20x30. I would like to convert the garage to a heated wood shop.

I am in climate zone 6A (Maine). I will have consistent heat in the shop, probably in the 55 degree range, bringing it up to 60-64 for working temp. I am leaning towards heat pump as heat source.

The garage is a concrete slab, the details of the footings/stems I do not yet know however.

The structure is 2x4 studs sheathed with (I believe) T1-11 exterior ply. Roof trusses (not raised heel). Stud bays currently open to inside.

In Green building techniques | Asked By Tyler Keniston | May 25 17
13 Answers

Average lighting, appliance and plug loads for PV sizing?

In doing some energy modelling for a future single-family net zero residence (in Canada), I am running into the problem of trying to guesstimate what the total lighting, appliance and plug loads will be. Because it can be different with every specific family, I'm wondering if anybody has any links or resources they can provide that offer average values for these loads that one can use. I will calculate the heating, cooling and hot water loads separately, but am hoping somebody has some suggestions for those remainders.

In Mechanicals | Asked By Burke Stoller | May 23 17
3 Answers

Crawl space insulation options

House is 1-story 1200 square feet, CA climate zone 3, zip code 95062, about 1/2 mile from the ocean. Existing ventilated (passive vents) crawl space has 18" clearance, 48" OC 4x floor joists under sub-floor, perimeter foundation and piers along joists. Clay soil is damp, but downspout diversion and french drain in back yard keep the space from having standing water. House is heated by hydronic radiant heat system, on top of subfloor in 1/2" sleepers.

In Green building techniques | Asked By Phil Boutelle | May 25 17
25 Answers

Well water pumps

Is there any preferred efficient water delivery systems from a well? The constant pressure systems were mentioned sometime on this website, but I don't know if that was for space or efficiency.
Grunfos was the brand mentioned.

In Mechanicals | Asked By Steve Young | May 24 17
27 Answers

Ductless minisplit - completed Manual J

Hello

In Mechanicals | Asked By Jeremy Archer | May 1 17
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