Mold on walls and baseboards.
Bathroom wall water damage.
Wall cavities affected by water damage are vulnerable to mold growth which also has a pungent musty odor.
You can detect leaks in walls by looking for key signs of water damage including peeling paint or wallpaper or patches of discoloration.
Fortunately water damage caused by missing grout or bad caulking is usually fairly easy to fix.
Rarely water damage to a tile wall can be caused by leaking pipes within the wall.
A common problem in bathrooms is soft or damaged drywall where the wall meets the shower or tub particularly near the floor.
If you are in any doubt about making the repair yourself or if the repair is a large job then hiring a professional contractor may be the best option.
If there is a strong musty smell near a certain area of your wall there could be a water leak or mold growth behind it.
In this instance the damage is usually confined to the wall where the showerhead and faucet is located and it may be found anywhere on the wall not just down near.
Long term leaks can cause structural damage within your walls and can also lead to serious mold problems in the walls.
How to fix a water damaged plaster wall beside the bathtub.
A musty smell indoors can also indicate a water leak.
In most cases the reason for a bathroom wall repair is water damage which is particularly common around the tub and shower area.