Leaking drainpipes in a shower or a bathroom plug will let water underneath tile.
Leak under bathroom floor.
This will be contingent on just how much water has accumulated.
As a last resort you may need to remove the tiles in order to fix any leaks.
Check areas around the tub tub drain tub overflow shower door and toilet.
Water stains on the ceiling or joists below.
If you have a bathroom on a second floor you might spot a leak in the ceiling under bathroom.
In the case of a tub set on a concrete slab the leak will ruin flooring in the bathroom or adjoining rooms.
If there are no signs of leaks in the ceiling or in any other the water sources throughout your home the conclusion is assumed to be a leak under the floor.
Another way to tell is to examine the drain from underneath which can be accomplished in the crawlspace or the basement.
Tiled floors can leak through cracked tiles or problems with the grouting.
Snap chalk lines on ceiling below and use a reciprocating saw to cut out the damaged drywall.
In this video this old house plumbing and heating contractor richard trethewey shows how to find and fix a bathroom leak.
When you suspect a leak under the bathroom tile you should take a few steps to fix the leak before other problems develop.
However because water can travel a long distance it s possible to find water stains on the ceiling farther away.
Vinyl flooring is prone to rot and will often curl at edges from prolonged exposure to water.
Evidence of a leaking wax toilet ring might not show up on the bathroom floor but this is a cheap fix and if you can t easily find the leak elsewhere pull the commode and replace the ring.
Inspect bathroom for water leaks.
If it gives this may be the problem.
Signs of trouble bathtub drain leaking.
Ceiling leaking water below bathroom shower won t believe what i found heres a step by step video on how i located and fixed this iss.
Water leaks under the bathroom tile are especially dangerous and can result in structural damage.
The best way to tell if this is your problem is to push down on the floor around the drain.
This is one of those fixes that needs to be done quickly before it escalates into bigger more complex issues.
Check the patch of ceiling in the room directly beneath the bathroom for stains and signs of water damage.
Begin by inspecting the floor as well as you can.