How to Replace a Kitchen Sink Strainer
Ask This Old House plumbing expert Richard Trethewey finds a rusty sink strainer in the kitchen and shows a homeowner how to replace it.
- Loosen the pvc nut connecting the strainer to the drainage pipe with a pair of adjustable pliers. Then continue by hand.
- Loosen the metal nut connected to the strainer with the pliers and then again by hand.
- If strainer is rusted into place, use a rubber mallet to pop the strainer up and out of the sink drainage hole. (Richard uses a propane torch to melt it out of place, this method should probably be left to professionals.)
- Once the old sink strainer is removed, take some plumber’s putty and roll it out into a one-foot length. This will be used to wrap a seal around the base of the new sink strainer.
- Place the sink strainer with the plumber’s putty attached into the drainage hole in the sink and press down hard.
- If possible, have a second set of hands hold the sink strainer in place with two screwdrivers as you hand-tighten up the metal nut to hold the sink strainer in place underneath the sink.
- Finish tightening the metal nut with channel locks.
- With the strainer in place, reconnect pvc piping and place a top groove gasket in between the end of the strainer and the start of the pvc pipe.
- Hand-tighten the connection.
- If applicable, place a second compression gasket on the bottom portion of the pvc pipe to reconnect it to the drain line.
- Hand-tighten the pvc nut.
- Snug up both pvc nuts with channel locks, be careful not to make them too tight.
- Remove the excess plumber’s putty in the sink with your hands.