Turn off water to the shower if needed
Remove the drain cover or strainer
Clean out hair, debris, and old sealant
Inspect the drain type and measure the opening
Remove the old drain body using the proper drain wrench or pliers
Cut away any old plumber’s putty, caulk, or sealant
Check the condition of the drain pipe and surrounding area
Apply plumber’s putty or silicone sealant to the new drain flange if required
Insert the new drain body into the opening
Tighten the drain securely without overtightening
Reinstall the drain cover or strainer
Run water and check for leaks around the drain
Apply additional sealant if leaks are present
Clean up any excess sealant and debris