How To Install A Bathroom Sink Drain
Installing a bathroom sink drain can be a DIY project that saves you money and gives you the satisfaction of completing a home improvement task. Here’s a step-by-step guide on how to install a bathroom sink drain.
Step 1: Install Pop-up Drain
Start by applying a bead of silicone around the drain pipe to ensure a watertight seal. Then, from underneath the sink, add the rubber ring and hand-tighten the nut. Add a plastic ring and another nut as per the assembly diagram. Finally, attach the last part of the pop-up drain assembly, hand-tighten the nut, and come back later with pliers to tighten everything up.
Step 2: Install P Trap Adapter
For a new sink installation, you’ll need a trap adapter that needs to be glued onto the pipe in the wall. After swabbing the inside of the trap adapter with some cement and doing the same for the outside of the drain, push on the adapter all the way in, giving it a slight twisting motion.
Step 3: Install P Trap
Connect the two black pipes by slipping a nut onto the waste drain and pressing it against the other pipe. Then, find the washer that fits onto the drain under the sink and connect the waste drain to the wall. Cut the waste drain if necessary, slide on slip joint nuts, and connect the U-shaped pipe, ensuring everything lines up without forcing any connection.
Step 4: Test for Leaks
Test the drain for leaks by letting the faucet run and checking the pipes. Fill up the sink and then drain it out to ensure there are no leaks. If there is a leak, try tightening the leaky joint before testing it again.
When to Call a Professional
If you’re not comfortable taking apart plumbing or if your pipes are very old, it’s advisable to call a plumber to handle the task.
FAQs
What is plumber’s putty used for?
Plumber’s putty is commonly used to seal along the base of faucets and other sink fixtures before setting them onto the sink. It gives a watertight seal and remains soft over time.
How do sink stoppers work?
Sink stoppers can be lowered to stop water and raised to allow water to drain and flow through the sink’s plumbing.
What is the standard bathroom sink drain size?
A standard bathroom sink drain size is 1 1/2 inches across, but drains can be larger or smaller, so selecting a sink stopper that fits your specific drain is essential.
Should I use Teflon tape when installing a bathroom sink drain?
Teflon tape can be used to seal the threads of the tailpiece and prevent leaks. It’s a good practice to use Teflon tape to ensure a secure connection.
What materials and tools are needed to install a bathroom sink drain?
You will need a sink drain kit, P-trap kit, extension tube (if necessary), plumber’s putty, channel lock pliers, and a hacksaw or pipe cutter.
Final Comments
Installing a bathroom sink drain is a basic plumbing skill that any DIYer can handle. Understanding the process and having the right materials and tools will make the installation easy and successful.