How to Install a Bathtub Drain and Trap?

how to install a bathtub drain and trap

Installing a bathtub drain and trap may seem like a daunting task, but with the right tools and instructions, it can be done easily. In this blog post, we will guide you through the steps needed to install a bathtub drain and trap.

Tools and Materials Needed

Before starting the installation process, make sure you have the following tools and materials on hand:

  • Tub drain kit
  • Tub trap kit
  • Plumber’s putty
  • Pipe wrench
  • Adjustable wrench
  • Screwdriver
  • PVC primer and cement
  • Teflon tape
  • Silicone caulk

Step-by-Step Guide to Install Bathtub Drain and Trap

Remove the Old Drain

Start by removing the old drain from your bathtub. Use a screwdriver to unscrew the drain cover and the drain flange. Once these are removed, use a pipe wrench to loosen and remove the old drain.

Clean the Drain Opening

After removing the old drain, clean the drain opening thoroughly. Use a rag to remove any debris or old putty from the opening.

Apply Plumber’s Putty

Take a small amount of plumber’s putty and roll it into a thin rope. Apply the putty around the underside of the drain flange.

Install the New Drain

Insert the new drain into the drain opening and tighten it in place using a pipe wrench. Wipe away any excess putty.

Install the Drain Cover

Attach the drain cover to the drain flange using screws and a screwdriver.

Install the Trap

Attach the trap to the drain using the provided hardware. Make sure the trap is aligned properly and tightened securely.

Connect the Drain to the P-Trap

Using a pipe wrench and adjustable wrench, connect the drain to the P-trap. Apply Teflon tape to the threads to create a watertight seal.

Install the Overflow Drain

If your bathtub has an overflow drain, install it using the provided hardware.

Test the Drain

Fill your bathtub with water and let it drain to ensure that the drain and trap are working properly. If you notice any leaks, tighten the connections and apply more Teflon tape if necessary.

Apply Silicone Caulk

Once you are sure that everything is working correctly, apply a bead of silicone caulk around the drain and overflow to seal them to the bathtub.


Installing a bathtub drain and trap is a relatively simple process that can be done by anyone with basic plumbing skills. With the right tools and materials, you can have your bathtub draining smoothly in no time. Remember to take your time, follow the instructions carefully, and test the drain before applying silicone caulk.


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