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29
votes
4answers
85k views

Why does my dishwasher back up into the sink, but running the disposal allows it to drain?

When my dishwasher runs the kitchen sink backs up. I have a two tub sink and only the side nearest the dishwasher with the garbage disposer backs up. Running the disposal for a few seconds causes the ...
12
votes
8answers
45k views

What can I do about my drains constantly getting blocked?

The one thing I have tried to do about this is use those foaming and non-foaming drain unblockers regularly. That has just been money down the drain, pardon the pun. I suspect that unblockers only ...
11
votes
8answers
69k views

How to fix stinky bathroom sink?

It smells like really musty water, but the water itself does not smell or taste bad at all. Only happens when I run the water, so it doesn't make the room smell, just when you fill something up or ...
11
votes
6answers
12k views

How can I prevent water from pooling in the street in front of my house?

I have a problem with water pooling in front of my house. Between my Sprinklers and the rain there is always a puddle where my lawn meets the street. What do you think is the best way to stop this ...
11
votes
4answers
20k views

Do I need a vent for extending a drain to a new bathroom addition?

I am building a new full bathroom on what used to be my back porch. I am planning to extend the existing drain at a cleanout and to run it outside the house underneath the floor. I need to know if I ...
9
votes
2answers
9k views

How can I reseal a shower drain on a pre-formed shower base?

The shower drain in my first-floor bathroom leaks. Based on looking from the basement below, it seems the leak is at the point where the drain assembly should clamp to the shower base (which is pre-...
8
votes
2answers
15k views

How do I install a sink in a room that doesn't have a drain vent?

I want to install a sink in my attached garage where there is no existing plumbing. I will be running new water supply and drain pipes to mains behind a nearby wall. I'm concerned I will need a ...
8
votes
2answers
15k views

Does a plumbing vent need to penetrate the roof? (Can it penetrate a wall?)

We're going to move our washer/dryer to the garage (the front loader needs to sit on concrete to keep it from shaking our house to the ground). I'll need to add a washer drain to the garage for the ...
7
votes
4answers
41k views

Why are there bubbles in my bathroom toilet and sink?

I have had a lot of really odd things happen in my bathroom this weekend and I want to make sure it is nothing too serious. Ok so when I was taking a shower I heard the toilet bubble up. A few ...
7
votes
4answers
790 views

Do I have to periodically pour water down my basement floor drain to maintain the p-trap water seal?

There is a sewer smell coming from my basement. There are only a couple entries to the sewer in the basement: A laundry sink that acts as the drain for a water softener (which regenerates every few ...
7
votes
2answers
2k views

Do tub drains of the same diameter ever have different thread-per-inch counts?

My tub's drain flange has had the little cross piece inside it broken out, which means I cannot screw a grid drain into it. Right now, it's totally open and an invitation for my toddler to drop stuff ...
6
votes
6answers
62k views

Can p-trap be installed higher than drain entry?

I have p-trap entry in drain at 16" above the floor. However, vanity that I got has lower drawer which has top at about the same height. There is also about 4" clearance behind drawer. I was told that ...
6
votes
8answers
63k views

White solid drain pipe vs black flexible corrugated pipe for a french drain

Which one is preferable if you have a straight line 2 feet deep trench in mostly clay soil? I'll put either one in a sock with gravel. There are some roots around the trench so I thought the solid ...
6
votes
4answers
14k views

Is it wrong to connect multiple J-bends (traps) together?

My tenants recently told me that they have constant clogging problems with their bathroom sink and had me come take a look at it. I found the following 3-trap configuration: This was done because ...
6
votes
7answers
48k views

How do I retrieve a detached plunger from a bathtub drain?

I have an old bathtub drain assembly that is similar to this: As far as I can tell, the linkage broke off completely due to old age. If I unscrew the trip lever and cover, it's not attached to ...
6
votes
1answer
240 views

Is a toilet drain permitted to run through I Joists?

It was suggested by a plumber, but is it common practice? The I joists are 11 7/8" but a 3.5 or 4" toilet drain line seems like a large hole to be cutting even if it's in the middle of the joist's ...
6
votes
1answer
1k views

Why does dirty water come into my second sink when the garbage disposal is on?

For a while I have been having problems with using the garbage disposal. The large sink empties very slowly and sometimes I put the disposal on to get it going. The only problem is that disgusting ...
6
votes
1answer
7k views

How can I lengthen my vent stack and are there any negative effects in doing so?

I have observed that when we receive a lot of snow here in Ontario, at least one of the drain vents on my roof is covered by snow. While after one winter in the house I have not yet observed any ill-...
6
votes
10answers
40k views

How can I prevent my HVAC condensate drain line from freezing?

Last night, my heat (forced air) suddenly stopped. Today, a plumber figured out that my heater is 90% efficient, produces lots of condensate, and the drain line had frozen. We went outside and saw ...
6
votes
1answer
2k views

How do I replace a section of a 4" cast iron pipe with PVC?

I am working on our upstairs bathroom and plan on moving some of the fixtures around to a different side of the room. This means I need to make changes to where the drain comes into the stack (I want ...
5
votes
1answer
400 views

Why does a laundry drain need to be installed at a minimum height of 30"?

My laundry machine doesn't work properly in my new flat (the wash cycle never ends), and the instructions specify that the common cause of my problem is that the drain is too low (my drain is indeed ...
5
votes
2answers
350 views

Remove old toe touch bathtub drain stopper with no screw

I have an old toe touch bathtub drain stopper that is stuck in the closed position and doesn't stop the water escaping either. I want to remove the stopper. I removed the cap the cap by pulling on ...
5
votes
3answers
14k views

Connecting a P-trap to a female drain connector in the wall

I am replacing a bathroom vanity and while I'm doing that, I'm also replacing the p-trap for the sink (mostly because I want one with a drain, but also because I have to raise the height a couple ...
5
votes
3answers
10k views

How can I install the drain for my reverse osmosis water filter?

I have purchased a Whirpool Reverse Osmosis Water Filter which installs under the sink. I am trying to install it and have run into an issue with the drain: the revers osmosis filter has a red tube ...
5
votes
1answer
2k views

How to replace bathtub pull-up drain stopper with screen/mesh for hair?

I have a bathtub which also is a shower, and it has a twist-and-pull type drain. Currently I never actually use the bathtub for taking a bath, only showers. Unfortunately it keeps getting clogged with ...
5
votes
3answers
11k views

Why does water and gunk back up through the overflow hole in the bathroom sink?

When I run the water in my bathroom faucet it sometimes (but not all the time) slowly starts to creep up the overflow hole and pour back into the sink. Included with the water is black and grey gunk. ...
5
votes
1answer
6k views

How should I troubleshoot and unclog an outdoor drain?

Our back concrete patio directs water to a nearby outdoor drain. The drain consists of what seems to be a 5 Inch green PVC pipe with a plastic grate cover that sticks out of the ground a few inches. ...
5
votes
1answer
1k views

Is this an appropriate drain design for adding a shower?

I recently took on the challenge of adding a shower to my existing downstairs bathroom. The bathroom is inside what used to be the garage so it is far away from any existing vents. After some demo, ...
5
votes
2answers
4k views

What do I do with a sewer pipe (toilet rough-in) full of cement?

I have a problem that is mind boggling. I bought a house and am now just getting ready to put a toilet in the basement, which has a cement slab. I just took the cover off the rough-in expecting the ...
5
votes
2answers
2k views

How can I replace this unusual kitchen sink drain pipe?

I'm trying to replace a broken 1-1/2 inch L-shaped brass pipe under my kitchen sink, as in this picture: At one end, it's connected to the sink drain, which if I'm understanding the terminology ...
4
votes
2answers
7k views

How to snake a bathtub with no overflow drain?

Our upstairs bath tub has been taking longer and longer to drain and my wife has finally tasked me to fix it. Yesterday I literally emptied an entire bottle of Liquid Plumber down the drain (...
4
votes
1answer
5k views

How does an external tower style bathtub drain work?

I have this style tub drain and can't figure out how it works. Does it simply block the flow of water when lowered? Or is there something more complicated happening? My tub has stopped draining and ...
4
votes
2answers
1k views

Is the drain cover in my shower sufficient?

I bought a new house about a month ago. In the apartment that I moved from, I had a cheap rubber drain cover that seemed to work very well at preventing hair from getting into the drain, similar to ...
4
votes
5answers
29k views

Sink tailpiece doesn't line up with trap

After installing a new bathroom sink, the drain tailpiece doesn't line up with the trap coming out of the wall. I've seen flexible accordion hoses for this, but I think that violates code (P3002.3.1)....
4
votes
1answer
6k views

How can I fix a sink drain stop which won't hold water?

I have a bathroom sink & fixture which are about a year old. The drain has worked fine, until about a month ago. Recently, any water I try to hold in the sink slowly leaks out. This is mildly ...
4
votes
2answers
433 views

Can p-trap be installed inside wall?

I have a new vanity I am installing in my guest bathroom. The current drain height is the same height as a storage shelf below my sink and does not allow the vanity to sit flush against the wall. ...
4
votes
5answers
183 views

Can I build a wooden floor over an occasionally moist garage slab with a drain?

I would like to install a subfloor in my garage and turn it into an office. The floor is slanted all towards the middle where there is a drain. There has never been any water (that I've seen in the ...
4
votes
1answer
11k views

Does a reverse osmosis system drain constantly?

I have come across a pharmacy grade reverse osmosis filter system. I would like to install it in my kitchen but before I do, I need some questions answered. Does the system drain constantly or just ...
4
votes
1answer
23k views

Can I move my washer and dryer 10 feet to the right?

My basement is being renovated, and I'd like to have my washer and dryer moved about 10 feet to the right of their current location. They would still be against the same wall, just further down. The ...
4
votes
1answer
3k views

How should I install a curtain drain in my crawl space?

Since I have wet areas in the crawl space, I have decided to dig a trench at the perimeter of my crawl space to take care of the water. This would also allow me to install rigid foam insulation on ...
4
votes
1answer
174 views

What steps should I take when cabling a drain?

We have a drain that backs up when a few gallons of water are put down it over time. The back pressure forces the water out through the toilet drain seal, leaving the water pouring into our basement. ...
4
votes
1answer
9k views

How do I create a curved surface drain out of concrete?

I have a barn and a pump house (10x16) structure that are within 3 feet of each other, built in 1910. The barn's foundation is field-stone, mostly exposed on the side of the pump-house. There is a ...
4
votes
1answer
1k views

Need guidance for venting a new rough-in for basement bathroom

I'm currently finishing my basement, and I wanted to rough-in plumbing fixtures for a future basement. I've already got the layout, but I just need to figure out the venting for the drawing for my ...
4
votes
1answer
683 views

Can I connect a drain for my new washing machine to an existing toilet drain?

I would like to add a wash machine to the basement. Near the area of the basement where I'll be adding it is a 4 in drain coming from an upstairs toilet. Can I tap the new drain into the toilet ...
4
votes
2answers
449 views

How much water is too much water underneath the basement concrete?

We are getting ready to install a new shower in our basement. When we had our house built about 8 yrs ago we asked to have a shower & toilet drains roughed in. I cut off the plastic cover for ...
4
votes
2answers
7k views

What would cause a kitchen sink to drain very slowly?

I snaked my kitchen sink drain to the end of my 20' snake so I know there is no clog for 20'. When I run water into the sink it starts to fill up immediately - not enough time to fill 20' of pipe. ...
4
votes
1answer
15k views

Can I move my bathroom sink's drain pipe about 6 inches to the right?

I found the vanity I wanted for my bathroom, but it doesn't fit due to the position of the drain pipe. It needs to move about 6 inces to the right. I assume there is some sort of adapter or ...
4
votes
1answer
157 views

How do I remove a push-pull tub drain stopper?

We have a bathtub that has a push pull drain stopper, and I need to clean out some gunk. The problem is that I can't get the stopper out of the drain. I (finally) got the top knob removed, and I read ...
4
votes
1answer
1k views

How to remove turn-style tub overflow cover?

I've tried looking all over for a solution, but I've yet to find a solution that matches my situation. The cover I have (I think) is supposed to turn so the hole is downwards so you can remove the ...
3
votes
3answers
15k views

Why do some free-standing ice makers need floor drains?

I am about to begin a bar installation project. I need an ice maker. There appear to be two kinds of free standing ice makers - those that do and do not require drains. Why does one type need a drain?...