If the sink rim is caulked scrape away the old caulk and recaulk.
Bathroom water leak sink.
Investigate appliances and fixtures.
Underneath the sink check where the leak comes from.
3 the nut may not be tight enough and water is simply coming through.
Turn off the faucet but not the water supply.
It can be directly under the faucet or the handles.
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To fix your leaking faucet turn the pipes below the sink to turn off the water and plug the drain with a rag.
1 water may leak in between the threads on the nut and the drain pipe if no plumbers tape was applied.
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Tighten the faucet base by turning the mounting nuts underneath it.
2 the rubber sealing washer or o ring may be squeezed excessively tight causing leakage.
For water supply leaks run your fingers over the lines to find out which one is damp.
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If there is a set screw behind the handle insert a hex key or allen wrench into the screw and turn it to remove.
Insert a sink stopper or cover the sink opening with a towel to prevent any tools from falling down the drain as you make your repairs.
Fill the sink with water and determine where your particular leak is located.
4 the drain pipe is off center and therefore.
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If you have a faucet with 2 handles for hot and cold remove each handle remove the nut with a wrench pull out the stem and replace the seat washer to fix the leak.
2 remove the handle how you remove the handle depends on your faucet type.
How to fix it.
Bad sink drain flange step 1 shut off the water to the house.
Tighten the clips under the sink rim that clamp the sink to the countertop.
If the leak does not come from any of these locations it can come from the connection between the connector and the water supply lines.
If the water meter test indicates a leak inside your home check the cabinets under the kitchen laundry and bathroom sinks to make sure they re dry.
Step 1 inspect the leaks.
For trap leaks turn on the water in the sink while checking the drain trap beneath for drips.