If you discover a leak in an upstairs bathroom, it’s crucial to locate the source and stop the water flow immediately to protect your home from severe water damage. Water leaking through the floor from an upstairs bathroom is often caused by one of three plumbing fixtures: the toilet, tub/shower, or sink. Here’s how to identify potential issues with each:
What to Look For on Each Fixture
Toilet – A common cause of toilet leaks is the wax ring that seals the base of the toilet to the floor. If this seal is broken or worn out, water can seep through every time you flush, leading to water damage in your subfloor and below. Signs of a wax ring failure include water on the floor around the toilet and a noticeable sewer smell. If the floor around the toilet is dry, the leak might still be occurring through a faulty wax ring directly into the subfloor.
Shower – Leaks during shower use might be due to cracked tiles or issues with the shower faucet behind the wall. If the leak persists even when the shower isn’t running, it could be from a water supply pipe inside the wall or beneath the floor.
Sink – A dripping sink often points to worn-out gaskets or washers in the faucet or drain assembly. Gaskets create a seal between the faucet and the counter, while washers are used under screws within the faucet. Damaged or old gaskets, washers, or O-rings can cause leaks as they fail to seal properly. Also, check the drain assembly under the sink to ensure all connections are tight and the seals are intact.
Your drain assembly may also have gaskets and washers at the connection points between the pipes beneath your sink bowl. Inspect these components to ensure they’re secure, and tighten any loose connections to maintain a proper seal.
See also: Why Your Toilet Keeps Running and How to Fix It
Need Help? Contact the Best Plumbers at Drain Express
If you’re unable to pinpoint the leak or the repair feels too complicated, don’t hesitate to call Drain Express. Our skilled plumbers specialize in locating and repairing leaks to protect your home from costly water damage.