Stop up the drain and fill the pan with water and let it sit.
How to repair a shower that leaks through floor.
How to fix a leaking tub drain.
On the shower wall side take off the circular metal plate call the escutcheon that surrounds the shower arm.
Also check for any gaps in the caulk where the shower or tub meets the flooring.
Let s check for the next possibility.
Just a note about shower or bathtub leaks over a garage.
If it happens that your shower or bathtub is located above your garage you can cut costs by having the plumber cut the ceiling under those pipes and replacing it with a removable door.
The inner door should be closest to the faucet.
Stains dampness or any other signs will reveal to you that not all the water is going down the drain and a fix is needed.
If you find some you re in for a new shower pan or shower floor to stop the leak.
If you have a shower curtain rather than a door make sure you close it completely when you shower or add a splash guard.
Below the shower pan if the pan is on an upper floor.
This will help to prevent water damage to surfaces in case of a leak or future damage to grout and sealant.
You could remove the cementitious grout from the grout joints remove the grout in the shower pan floor to wall horizontal transitions and remove the grout in the inside corners of the wall tile.
The ceiling board or floor may show some stains.
I like to cover the drain and at least 6 inches on all sides.
What to do if there s a water leak in your ceiling.
These escutcheons are decorative in nature and they are either split and can be removed without take off the shower head or they are solid which means you must unscrew the shower head and slip the cover off.
Loose floor tiles close to the shower.
Use a good quality duct tape to cover the drain.
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.
If the shower arm is the reason your shower leaks behind wall it is not a difficult fix.
How to fix a leaking shower pan.
This cuts the cost of having to dig through the floor to get to the water pipes and if for any reason there is a future problem the access to the pipes is much easier.
Soggy carpets around the shower stall.
The once the joints are open and clean use an astm c920 silione sealant and fill all of those joints.
Now using a different water source such as a garden hose or another bathroom fill buckets with water.
Clean the shower floor and let dry completely.
Be sure to overlap sliding doors correctly when you close them.
If no water drips out below check closely with a bright light it may not be your shower pan leaking.
If your pan or floor looks good try this basic step.