Projects

Fixing Leaky Sink Strainers

Project Overview

The sink strainer assembly connects the sink to the drain line. There's a bead of putty that goes under the lip of the strainer, and it's a very common place for leaks to occur. Your goal is to take the assembly apart, put in fresh putty, and tighten everything back up. Remember: there are quite a few nuts, washers and gaskets to this assembly. Keep them in their correct order when you reassemble everything. Old washers and gaskets should be replaced – take the old ones with you when you shop for replacements.

Step 1

Unscrew the Slip Nuts

Unscrew the slip nuts from both ends of the tailpiece with slip-joint pliers. Disconnect and remove the tailpiece from the strainer body and the trap.

Step 2

Remove Big Locknut with a Spud Wrench

Remove the big locknut with a spud wrench. You may need to get things going by tapping on the lugs with a hammer. Unscrew the locknut, then remove the strainer assembly.

Step 3

Remove the Old Putty

Remove the old putty from the drain opening by scraping it off with a putty knife. If you're using the old strainer body, clean off the old putty from under the flange. You should also replace the old gaskets and washers.

Step 4

Apply Plumber's Putty to Lip of Drain

Apply a bead of plumber's putty to the lip of the drain opening, making sure there aren't any gaps. Press the strainer body into the opening. From under the sink, place a rubber gasket, then a metal or fibre-friction ring, over the strainer. Reinstall the locknut and tighten it, then reinstall the tailpiece.

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Project Details

Skill Level: Beginner

Time: 2 hours

Before you start, read this »

Due to differing conditions, tools, and individual skills, The Home Depot® assumes no responsibility for any damages, injuries suffered, or losses incurred as a result of attempting to replicate any of the home improvement ideas portrayed in this website Before beginning any home improvement project, review it thoroughly to ensure you or your contractor can finish the project and if any doubts or questions remain, consult local experts or authorities. Because codes and regulations vary greatly, you always should check with authorities to ensure that your project complies with all applicable local codes and regulations. Always read and observe all of the safety precautions provided by any tool or equipment manufacturer, and follow all accepted safety procedures.

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