Your best option for a base coat to cover water stains on the ceiling is an oil based mold resistant stain blocking primer in a shade closely matching that of the existing ceiling.
Mold spots on ceiling.
We had a wasp problem a while back and the exterminator asked if there were any brown spots on the walls or ceiling explaining that this is a sign of infestation.
Mix a solution of one part bleach to three parts water in a spray bottle and thoroughly saturate the moldy areas of the wall.
Cleaning mold from the shower or bath can be done with the same methods used on the ceiling.
Clean the area with a household bathroom cleaner first then use either a bleach solution or vinegar to kill the mold.
This has got to be the most disgusting type of ceiling stain if you ask me.
I suggest you call an exterminator.
Cigarette smoke can cause staining via the same principle as ghosting.
These spots indicate the growth of mold spores and must be removed.
Cleaning soot from ghosting is extremely hard.
Mold is often dark but it can come in other colors.
In this case it was due to areas of missing insulation in the attic.
The spots also may be mold.
It may not have been mold.
Technically it s not a stain but rather a growth.
Open a window and or keep a fan.
A high humidity level can create wet stains on the ceiling perfect for mold to spread quickly.
Put on your rubber gloves.
Mold is pretty easy to spot on your ceiling and there are a few causes of mold growth on your ceiling.
Remove mold stains from walls.
Brownish spots on the ceiling can be fluids gross i know from the bugs.
After cleaning consider repainting the ceiling with anti mold paint to prevent recurring issues.
They can be found in one large water damaged area or they could be spread out over the entire ceiling.
And it s not just about mold.
Ceilings constructed with any porous material cannot be cleaned and must be replaced but smooth ceiling surfaces can be cleaned inexpensively and with relative ease.
Ceiling mold growth is typically black.
Typically your only recourse is to repaint.
These spots can range in size from small specks to large clusters.
To test for mold touch the spots with a cotton swab that has been dipped in household bleach.
I think everybody knows what mold looks like.
How to identify an up close photo of mold on a ceiling.
Step 2 make the mold remover.