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Unanswered Questions

6,469 questions with no upvoted or accepted answers
7
votes
3answers
606 views

Basement Bathroom Plumbing - Rough in Backwater Valve

I am trying to figure out how in the world to frame this basement bathroom. As you can see from the image, there is a backwater valve that would end up right in the middle of the room. I know that ...
7
votes
1answer
1k views

What should I do about my rendering & damp-proof course?

I have a house that was built around 1890 and is of brick construction with a rendered band running around the base which also forms square edged columns around the front door. Until recently the ...
6
votes
1answer
327 views

Tree stump in crawlspace surrounded by boards and covered in concrete?

I had a home inspection done today and the inspector told me this was a first: In the crawlspace there was a large box filled with concrete. It looks like this: Image source The builder was there ...
6
votes
2answers
288 views

Per IRC, are flexible PVC couplings ever allowed to be used above ground for PVC to PVC connections?

It is my understanding that flexible PVC couplings (e.g. Fernco) meet the definition of Mechanical Joint in the international residential code. The 2015 IRC prohibits the use of Mechanical Joints on ...
6
votes
1answer
675 views

Is LP gas trapped between the shutoff valve and the pipe end cap potentially dangerous?

I am renovating my fireplace that was original to the home built in 2007. It was not to our liking, so I am doing a resizing to make it fit better in the room. In doing this I needed to change the ...
6
votes
1answer
130 views

Halogen light stops working when cover is installed

I have an under-counter halogen light (jc / g4, 12 watts) that doesn't work. If I remove the glass safety cover (might be called the lens) from the light socket then the light works fine, and will ...
6
votes
1answer
201 views

Damp concrete floor in bedroom

Had water overflow into bedroom and closet. New laminate floor removed. Concrete floor has glue strips from another flooring that is sticky in some places. Will thoroughly clean with as little water ...
5
votes
0answers
84 views

Paint blisters and bubbles right after professional paint job, then rain

Our Victorian house was recently professionally painted - the job finished a few days ago. Last night it started raining, and this morning there are many places where the paint is now bubbling and ...
5
votes
0answers
71 views

Do I need a wall thimble for thermal separation with a category III venting appliance?

I bought a tankless water heater that allows me to vent using category III. I've seen that wall thimbles are included in many category III termination kits, but am wondering if they are really ...
5
votes
2answers
236 views

Is there a recessed floor box for a water supply?

You know how they have those floor boxes that set in concrete with a flush cover, and when you open it there's electrical outlets inside, but when closed it's flat like the floor and not in the way? (...
5
votes
1answer
117 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
1answer
230 views

How to pour a concrete walkway directly up to a T style foundation

This is a side cutaway drawing of an existing 1930's stucco wall, showing the stucco in red and the original foundation. There is no weep screed, and originally the stucco was troweled right up to ...
5
votes
3answers
1k views

Why does hot water only run for 30 seconds in bathtub?

In the bathroom of this rental is a tub with a shower diverter. It's an older setup with a hot & cold faucet and a center valve (one direction diverts to shower, the other to the tub faucet). If ...
5
votes
3answers
669 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 ...
5
votes
1answer
243 views

What should be used between a concrete tub and wall tile?

I have an older home that has a large, decorative concrete bathtub/shower with tiled enclosure walls. The walls behind the tile and tub are poured concrete. (Yes, the house is very sturdily built.) ...

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