Bathroom sink drains through floor not wall [ 9 Answers ] Hello First, let me say this a great forum. Her education includes marketing and a bachelor's degree in journalism from the University of Kansas. When you are installing a kitchen sink drain pipe along with the drain attachment on the floor, you will need to be able to fit the drain and the parts together. A fall of 1/4 inch per lineal foot is the best slope for drainpipes. Every sink in my house has the supply lines coming up through the floor and the drain line goes into the wall. During the layout stage, plan to run the drainpipes parallel to the floor joists when possible. submitted to our "DoItYourself.com Community Forums". Apply a small edge of putty to the strainer, and then push it down into the hole in the sink. Use a pair of pliers to turn … Patch concrete, install 300 sq. Installing the kitchen sink drain to your sink is not too difficult, and you should be able to get this job done during a weekend by following some simple instructions. If you take an 1 1/2″ kitchen sink drain and measure out 1/4″ per foot, you’ll get 6 feet by the end of the run. How to Repair a Crack in a Sink Drain P-Trap, How to Keep Bacteria from Accumulating in Your Kitchen Sink Strainer, Hot Topics: Basement Sink Drain Leak Repair, Deck Building 6 - Attaching Ledger to the Wall, Hot Topics: Replacing the Trap Under the Sink. So the kitchen sink has a very slow drain. The actual drain pipe that enters the kitchen sink cabinet must be no larger than a 1.5-inch pipe. Once you have it fitted correctly, you can then attach a pipe nut onto the edge of the tailpiece. © Copyright 2020 Hearst Communications, Inc. Gurgling is an indicator that your kitchen sink is experiencing some serious problems on drainpipes. How to Install a Drop-In Kitchen Sink Pa... How to Install a Drop-In Kitchen Sink Part 2. The threaded edge of the nut should face the strainer, and you should also add a single pipe washer over the ends of the tailpiece, an then secure it to the bottom edge of the strainer, using your hand at first and then tightening using a wrench. Done! Always consult a professional prior to cutting through a floor joist. to this site, and use it for non-commercial use subject to our terms of use. Adding another bathroom or relocating plumbing fixtures during a remodel requires running new drainpipes. When water empties from the kitchen sink, it goes through a sometimes complex network of pipes before it gets to the main waste pipe, which is typically in the wall. You may freely link Toilet Vent Option 1: Indirect Connection. You can get the right drainpipe configuration and the perfect slope, but unless you vent the drainpipes, you’ll end up with clogs and water locks. Since the pipe is 1 1/2 inch in diameter, kitchen drainpipes are also 1 1/2 inches in diameter. Different fittings -- including couplers for connecting straight sections of pipe, and “T’s” and “Y’s” for connecting separate drains -- come in an array of sizes that adapt when attaching pipes of different dimensions. Add a washer to the beginning of the trap, and then push it into place by tightening it up with your wrench. Toilet Bubbles and Backs Up When the Sink Drains. I just found it and registered. The reason this is important is because this is the exact point at which the top of the pipe at the high end (obvert) of the drain and the bottom (invert) of the pipe at the low end of the drain become level on a … Special PVC primer and glue are necessary for connecting the pipes and fittings. When this isn’t feasible, you might have to run a pipe through the joists, but consult an engineer to make sure you won’t compromise the floor’s structural integrity by cutting a hole.