The most likely source of the leak is the plumbing located in the wall adjacent to the damaged floor.
Leaks in floor.
1 shut off all plumbing fixtures in the house.
You can be sure that water is leaking in a wall if you see conspicuously wet carpet or notice that the floor is always wet in a certain area of your home.
Begin by inspecting the floor as well as you can.
During a recent rain i observed the area where the water is entering from and i could hear water falling inside wall before appearing on floor.
In the case of your dishwasher these leaks can often happen over a long period of time and go unnoticed.
It doesn t appear to be the grout as i thought.
To check for a leak unplug the appliance.
Signs of trouble bathtub drain leaking.
This can cause a lot of damage to your floor.
This will be contingent on just how much water has accumulated.
Although rare if the toilet s shut off valve or supply tube bringing water to the toilet supply valve develops a leak water may seep through the floor below the toilet tank and into the ceiling below.
This is the simplest way to tell that you have a water leak in your walls.
Leaks in water supply lines or drainpipes beneath the floor can go undiscovered for weeks or longer if you don t regularly check the crawl space.
Look behind it for any damage to the walls puddles or mold.
These leaks can stain or destroy the ceiling below or rot floor joists.
During a hard rain water leaks into room at floor level.
In the case of a tub set on a concrete slab the leak will ruin flooring in the bathroom or adjoining rooms.
If you have water coming up from the basement floor there can be all kinds of reasons it s happening and lots of solutions too.
Look for standing puddles of water near a wall.
Could it be the caulking sealant around the outer window frame or what.
This will be quite evident on the floor below the toilet tank where water may be puddling.
By observing how close to the nearest wall the damage is this may be ruled out or confirmed immediately.
While some leaks are totally silent for instance if water is traveling along a wall stud other leaks can sometimes be heard giving you a clue as to the leak s location.
Anytime your refrigerator has a water supply or ice maker you have a chance for a leak.
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.