If you re not sure of the cause of a damp patch on a wall try the foil test.
Repair bathroom wall water damage.
This indicates a more serious plumbing problem that must be fixed before you repair.
Before making a repair because of bathroom wall water damage it is important that you discover the source.
Water damage in the bathroom could be caused by something as simple as water spray from a shower head water seeping into faulty caulking around the tub or it could be something more serious like a leak in a pipe behind the bathroom wall.
Here are the basics on repairing water damage in a bathroom effectively.
On the outside of the window apply a bead of caulk to the crack in 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 there s a lip at the top of the shower stall water collects there and seeps into the drywall causing it to soften and crumble.
If you have more severe plaster damage with wall material falling off the lath use the process at this link to make repairs.
The repair process on this page can be used to repair water damage to the surface layers of plaster walls and ceilings.
In order to repair the water damage there are several steps that you will need to follow.
You may need to bring in a long line of contractors to get things back in order.
Do so by closing the main water valve.
Before beginning a repair in the bathroom you should make sure that the water to the room is shut off.
Although the sheetrock used in bathrooms is usually greenboard.
The drywall in the bathroom above the shower and bathtub is typically subjected to a daily onslaught of steam.
Step 1 shut off the water.
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 the base.
In a worst case scenario your bathroom might have suffered structural damage and mold and mildew is present as well.
Use your finger to run along the seam to ensure proper cohesion.
Erasing signs of the damage in your bathroom is dependent on the severity of what s occurred.
Dry the wall surface with a fan heater then tape some kitchen foil tightly over the affected.
How to fix a water damaged plaster wall beside the bathtub.