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29 Answers

Cold weather performance reports from minisplit owners

This morning I drove to town for a dentist appointment, and the digital outdoor thermometer on my Subaru bottomed out at -28°F as I drove through Lyndonville, Vermont.

During the past week, the thermometer at our house hasn't risen about 0°F, even during the afternoon hours. Of course, all of northern New England and the upper Midwest has been experiencing similar temperatures this past week.

So I'm taking this opportunity to ask owners of minisplits to report on how well their systems are working during the recent cold snap.

Asked By Martin Holladay | Jan 2 18
3 Answers

Any recommendations for financing an off-grid house in Canada?

I have my heart set on an off-grid house in Ontario, Canada. I thought it would be a relatively easy purchase but every mortgage broker that has looked into it has come back saying that the bank will not finance an off grid house. I don't know if it's worth it to try again but that means multiple credit checks which is not the best either.

Can anyone recommend anyone in Canada that could help? Time is of the essence! Any advice extremely appreciated!

Asked By Laura Mandy | Feb 16 18
5 Answers

Radon system design with drain tile to daylight

We are in the process of remodeling our basement and will be pouring a new concrete slab. The house was built in the 1940’s and sits on very dense clay soil. The old concrete has just been removed and we’ve dug down 4” below the top of the footings so that 2” of stone can be placed followed by 2” of EPS, a poly vapor barrier and new concrete. A one year radon test was completed two weeks ago and the average value was 6.6 pCi/l (test completed with all old concrete in place); we will be installing a radon vent prior to pouring the new slab.

Asked By Andy Freeman | Feb 16 18
11 Answers

Laminate my 2 x 4‘s with another 2 inches or more insulation?

I have a table saw and can rip all day long, plus I have the time, so I was thinking of upping the exterior insulation thickness.
I am insulating the exterior wall in my laundry room plus the framed area above the finder block wall in the corner of my basement that is above ground.
Between the Roxul and the drywall I am putting into those exterior walls I am planning to use Membrain vapor barrier, with staples and acoustic sealant of course. The laundry room is on a slab in my large 50’s split-level home.

Asked By JakeNY | Feb 16 18
6 Answers

How do I support interior attached garage floating wall ?

My split level late 50’s home in southern NY has an attached garage. The wall separating the garage is a floating wall and the garage level is on a cement slab, with a block and framed wall. The joists in the ceiling parallel this wall and there are no joists sitting on the wall for support- the wall is between 2 joists letting lots of cold air into my home.

Asked By JakeNY | Feb 13 18
9 Answers

BEopt: Too good to be true?

Has anyone used BEopt software? Are the results reliable?

I entered my design into BEopt. I had to create many of my own options. For instance, there was no description for my R22 exterior foam. I think I understand the process and how to use it.

My Assumptions:
Detroit, Michigan (CZ5)
1040 sq. ft.
71° heating set point
76° cooling set point
11 ft. walls. (There is no option for my shed roof design so I averaged.)
R40 walls (Nominal R22 external EPS and R21 batts downgraded for framing)
R80 vented roof (24" cellulose in ≥ 30" parallel chord trusses.)

Asked By Thrifttrust | Feb 13 18
45 Answers

Region 5 below grade basement insulation techniques with intention to finish

I've probably read most or all of the articles on the subject 5-6 times over, but am still left with many questions as the advice can quickly change as the circumstances do, and it's difficult to keep track of all these factors.

My goal is to finish my below grade basement in 18301 Region 5. Cape cod style home built in 1968. 954 sq ft basement.

Asked By Ryan O'Rourke | Nov 19 17
3 Answers

How to deal with metal roof condensation?


I have a detached 20' x 23' two storey garage, 100 yrs old, with an open room on the upper floor. The metal roof has a fairly serious condensation problem in late winter/Spring.

I'm in Climate Zone 6 - Montreal, Canada.

The current roof is an exposed-fastener steel corrugated gable. Around 2:12 - 3:12. The metal is screwed directly to purlins, on top of rafters, with no sheathing or underlayment. The attic floor is sloped old wooden boards covered in tar paper (I believe this was the original built-up flat roof). The additional gable structure was built on top of it.

Asked By Leo Singer | Feb 15 18
22 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

Asked By James Someone | May 27 17
2 Answers

Application of 2/3-1/3 rule when rigid foam is vapor barrier

I submitted a question a couple of weeks ago: "Rigid Foam Between Walls" in response to which I received numerous very helpful answers. Thanks again.

Asked By David Williams | Feb 14 18
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