If you notice pencil marks on your wall the first step is easy simply try to erase it with a pencil eraser or art gum eraser.
How to remove hard water stains from painted bathroom walls.
For extra stubborn marks dip the corner of a damp cloth in baking soda then gently rub it along the mark.
Make a vinegar solution.
Dip your microfiber cloth into the solution.
After painting my perfectly prepared walls i was in for a shock when water staining.
Those drip mark lines on your bathroom walls do exist.
If this doesn t work rub the spot gently with a cleaning eraser sponge.
Apply a layer of anti condensation paint if the walls and ceiling are painted.
Wring out the cloth so that it s not overly saturated.
Steps to remove the stain.
Vinegar cheap natural white vinegar is the best tool you can use to combat those every day hard water spots that keep your surfaces from gleaming.
Wipe your walls down after every shower or bath.
Prepare a 50 50 mixture of water and white vinegar in a spray bottle.
If the hard water stain begins to lift but refuses to disappear entirely try spraying the scale again with full strength white vinegar.
Wipe the wall then dry it to test for colorfastness.
Combine the liquid ingredients in the bucket.
Scrape away any loose paint with a paint scraper then buff over the surface with fine sandpaper.
You re not imagining things.
Use one of the sponges to wipe the walls with the solution.
Wipe away the vinegar with a soft damp cloth.
When condensation from a hot shower or bath forms on the walls and begins streaking or dripping down the wall drip marks occur.
Rub the stain with the damp cloth until you can t see the stain anymore.
Mix a few drops of dishwashing liquid and warm water in a medium sized bowl.