Cost to Replace a Bathroom Sink
Replacing a bathroom sink means shutting off the water, disconnecting the supply lines and P-trap, removing the old basin, and setting, sealing, and reconnecting the new one. It is a moderate DIY project, but sink type, mounting method, fit at the countertop or vanity, and leak-free plumbing connections all need careful attention.
Common reasons homeowners do this job
- The existing bathroom sink is worn or damaged.
- A bathroom update calls for a new basin or faucet.
- A new vanity top or countertop needs a sink that fits its cutout.
- The homeowner wants a different sink type or mounting style.
DIY or call a pro?
This is a legitimate DIY job when the new sink, faucet holes, cutout, P-trap, and supply-line sizes have been checked and the plumbing connections can be handled confidently. Consider a professional if there is uncertainty about disconnecting and reconnecting the P-trap and supply lines, mounting the sink, or sealing the drain and rim. Shut off the water completely and relieve pressure before disconnecting lines, keep a bucket and towels below the plumbing, and use a helper for a heavy stone or cast-iron basin.
Frequently asked questions
- Can I replace a bathroom sink myself, or should I hire someone?
- A homeowner can take this on if they can match the replacement sink to the existing mounting type, cutout, faucet-hole spacing, P-trap, and supply lines. Consider hiring help when any of those fit or connection details are uncertain, or when a heavy stone or cast-iron basin is too heavy to lift safely with a helper.
- What makes bathroom sink replacement cost more?
- The price can rise with the job's size, labor time, the sink and plumbing materials selected, and haul-away or disposal of the old sink. A small job can also be affected by a minimum or trip charge.
- What should I measure before buying a replacement bathroom sink?
- First identify whether the existing sink is drop-in, undermount, pedestal, wall-mount, or part of a vanity top, since each uses a different mounting method. Measure the basin, faucet-hole spacing, and countertop or vanity cutout, then verify the P-trap and water supply-line sizes.
- When should I check for leaks after installing a new sink?
- Turn the water back on and run the faucet after reconnecting the supply lines and P-trap. Check every connection for leaks before caulking the perimeter, and keep a bucket and towels nearby because water remains in the trap and supply lines.
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