Installing a new sink and faucet is an impactful way to update your kitchen or bathroom without breaking the bank. The project can seem intimidating, but it’s actually a straightforward upgrade most homeowners can do with the right tools. This Old House plumbing and heating expert Richard Trethewey shows how to install a new sink and faucet that looks great and won’t leak.
Tools and Materials for Installing a New Sink and Faucet
Here’s what you’ll need for this project:
- Adjustable wrench
- Bucket
- New sink and faucet
- Plumber’s putty
- Pliers
- Putty knife
- Rags
- Screwdriver
- Silicone caulk
Removing the Old Sink and Faucet
Before doing anything, shut off the water supply to prevent water damage and make the task more manageable. To do this, locate the shutoff valves under the sink. Turn the valves clockwise to stop the water supply, then open the faucet for a few seconds to let out any remaining water in the lines.
If you find that the valves don’t hold or you can’t find them, you may need to shut off the main water supply to the whole house.
Disconnecting Plumbing
With the water turned off, you can now disconnect the plumbing. Slide a bucket beneath the sink to capture any residual water in the pipes. Detach the supply lines from the shutoff valves. Loosen the nuts connecting the sink to the drain lines. Take off any clips securing the sink to the countertop.
Removing the Sink
Following plumbing disconnection, the old sink is ready for removal. Use a putty knife along the sink’s edge to break the existing seal. Gently lift the sink out of the countertop cutout. Clean the countertop surface for the new sink.
Installing the New Faucet
Affixing the new faucet before placing the sink simplifies the task by offering more room to work.
Attaching the Faucet
Most faucets affix with nuts beneath the sink. Place the faucet into the designated holes on the sink. Secure it from underneath using the provided nuts. Tighten the nuts with an adjustable wrench or pliers.
Connecting Supply Lines
Once the faucet is secured, the next step is attaching the water supply lines. Fasten the hot and cold supply lines to the appropriate faucet inlets. Hand-tighten the connections, granting them an additional quarter turn with pliers. Beware of over-tightening, which may damage the fittings.
Installing the New Sink
With the faucet installed, it’s time to fit the new sink into the countertop opening.
Dry Fitting the Sink
Before applying sealant, verify that the sink fits properly. Lower the sink into the countertop cutout and check that it sits level and flush with the countertop. If necessary, make adjustments to the opening with a saw.
Applying Sealant
You’ll want to prevent water from seeping between the sink and countertop. To do that, run a continuous bead of silicone caulk around the sink’s rim. Ensure that the bead is even and void of gaps. Wipe away any excess caulk with a damp cloth.
Securing the Sink
After applying the sealant, secure the sink in place by gently lowering it into the opening. Press down firmly to set the sink in the sealant. For drop-in sinks on laminate countertops, use the provided clips to hold the sink securely.
Connecting the Plumbing to a New Sink
With the sink and faucet positioned, it’s time to complete the installation by reconnecting the plumbing.
Installing the Drain
Drain installation is critical to avoid leaks. Apply plumber’s putty around the sink strainer. Install the strainer and tighten it from below. Connect the P-trap to the strainer and the wall drain.
Attaching Supply Lines
Finish by connecting the water supply lines. Attach the supply lines from the faucet to the shutoff valves. Hand-tighten the connections, then give them a quarter turn with pliers. If the drain location or sink depth has changed, you might need to modify the drain piping.
Testing the Installation of a New Sink and Faucet
Test your work for leaks or issues before considering the job complete.
Checking for Leaks
Turn the water supply back on and do an inspection. Slowly open the shutoff valves and run water through the faucet for several minutes. Examine all connections under the sink for any leaks.
Final Adjustments
If necessary, tighten any connections that display signs of leaking. Ensure the sink remains level and does not rock. Test the drain for proper flow and any slow spots.
Maintenance Tips for an Extended Lifespan of a New Sink and Faucet
Keeping your newly installed sink and faucet in top condition requires regular maintenance. Follow these tips to keep them in good condition for longer.
- Check water pressure: Ensure optimal water pressure to avoid strain on the faucet and fittings.
- Regular cleaning: Clean your sink and faucet with a gentle cleaner to prevent buildup and stains.
- Inspect seals: Check seals and caulking around the sink regularly to prevent leaks.
- Tighten connections: Periodically tighten any loose connections to prevent drips and leaks.
