Unanswered Questions

7,331 questions with no upvoted or accepted answers
5
votes
1answer
247 views

Adding a C wire to older 3 wire

How do I use the green wire as a C wire as suggested in most installation instructions for the newer wi-fi thermostats? They all reference terminal strips at the furnace, all I have is the 3 wire ...
5
votes
2answers
474 views

Should I cut air space in my basement foam board insulation?

I intend to finish a part of my basement following this guideline from Fine Homebuilding and Building Science. In this configuration, the foam board completely contacts the concrete. My conern is that ...
4
votes
2answers
248 views

Why does my light box have 2 cables for this one switch?

Took down a ceiling fixture and discovered what looks like a possible switch loop, except I don’t understand how the connection gets completed with the current set up. Basically, 2 lines coming into ...
4
votes
4answers
932 views

What is the proper way to convert a pair of three-way (SPDT) switches into a single two-way (SPST) switch?

I'm in the process of replacing some of the light switches in my house with smart switches, Wemo Light Switches in this case. I've had no problem with the replacement of my One-way switches (SPST I ...
4
votes
2answers
581 views

What distance apart should metal stud securing brackets be placed?

I have hired a contractor to line the walls of an old apartment with metal stud and drywall as the walls are very uneven. The drywall is up but the walls have quite a lot of give in them, if I push ...
4
votes
1answer
362 views

Is moisture a concern with solid hardwood flooring over a crawl space?

I recently purchased around 600 sq feet of 3 1/4 inch solid hickory from Bruce, which I'm installing over a crawl space. I put down a 6 mil vapor barrier in the crawl space. I'm measuring the ...
4
votes
1answer
354 views

Should drop ear elbows be used with CPVC supply lines?

When running CPVC supply lines for a sink, how should they be anchored before popping out of the drywall? I know with copper you can use drop ear elbows which are mounted to a backer But with CPVC ...
4
votes
2answers
4k views

Wiring in a bath heater,vent, fan combo with power source coming from ceiling

I have 3 cables coming in from the ceiling, with one being the supply. At the switch box I have 2 cables with neither being hot. In the switch box I have a black/white and another set being black/...
4
votes
3answers
2k views

glue/nail down wood flooring installation: any disadvantages for click-lock?

I am purchasing 1300sqft of 3/8" thick engineered hardwood for my home. 600sqft will be glued down (first floor is concrete) and 700 will be nailed down (second floor is wood subfloor). I do not want ...
4
votes
0answers
4k views

What type of filters should I use for a 3 stage whole house water filter?

We have city water, but it always manages to taste like metal and chlorine. I was going to add point-of-use filters, but then decided it would be better to do the whole house to cover showering, hot ...
4
votes
3answers
24k views

How to seal between sill plate and foundation wall with wide gap?

Here is a picture of the top of my uninsulated basement wall. The foundation is poured and from early 1970s. For orientation to the photo: the white in the lower left corner is the vertical face of ...
4
votes
1answer
927 views

Can we install an aeration unit in an older septic system?

Our home was built in 1957. We have had problems for years with having a wet drain field and keep having our septic pumped. Today (of course my husband is away), I have done a couple of loads of ...
4
votes
1answer
92 views

How to seal straight-thread faucet shank / nipple to the faucet?

I have a faucet which requires installation of a separate threaded 'shank' or nipple which acts as both the water supply inlet and also is used to anchor the faucet to the sink deck. These are ...
4
votes
1answer
886 views

Can a vent be started from a wye?

Is it ok to start a vent on a 45 from a wye like on this drawing? I need to clear the edge of the sink (actually a giant double compartment sink) before I can go up and start horizontal once I clear ...
4
votes
4answers
10k views

Ceiling fan light dims

I have a Harbor Breeze ceiling fan and light kit. When I turn on the light, it starts out bright, but then in a second it dims. It doesn't turn off, it just dims. What could be causing this to ...

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