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Unanswered Questions

8
votes
3answers
2k views

How to shape the zone a radar motion sensor detects?

The light in my bathroom is controlled by a radar motion sensor. The idea was that radar based sensors can be hidden inside the lamp itself and thus be invisible (so no sensor, no switch, only the ...
7
votes
1answer
169 views

How can I handle dry-looking areas in the table I'm refinishing?

I've stripped and sanded my dining room table, and have put down 5 coats of minwax gloss one step (classic oak color) lightly sanding between coats. The problem I'm having is that there are small ...
7
votes
2answers
307 views

Garage Wiring: No Voltage With a Load

The power recently went out in my garage. When I went to the garage and flipped on the light, there was a small spark from within the switch box (where the wires enter the garage) and then no power. ...
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
2answers
213 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
439 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
5answers
310 views

Buzzing on laptop, stove and other electrical devices in Canary Islands

I have a friend who has moved to the Canary Islands (Spain) for a while. She has told me that there is a buzzing that she feels when she touches many of the electrical devices. I noted something ...
6
votes
1answer
109 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
169 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 ...
6
votes
3answers
534 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 ...
6
votes
2answers
4k views

Can I use a single air gap for a reverse osmosis system and a dishwasher?

Is it possible to do this? Currently we have a line from the dishwasher to the air gap and from the air gap to the garbage disposal. I want to install a reverse osmosis system but we only have the one ...
5
votes
0answers
43 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
164 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
79 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
179 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 ...

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