Ceiling stains can draw eyes away from even the most beautiful living room dining or kitchen.
Brown mold spots on ceiling.
The outer surface is not the only place brown mold can grow.
In early stages brown mold may look like spots or discolouration.
If there is plumbing problem that happens inside the wall structure mold will grow from the inside and slowly spread to the outer part if not removed.
Some species of brown mold may even grow into thicker mushroom like blobs.
Depending on the colour of the surface it is growing on it may appear brown or nearly black.
To test for mold touch the spots with a cotton swab that has been dipped in household bleach.
I suggest you call an exterminator.
There are 3 most common types of ceiling stains and they are 1.
Cigarette smoke can cause staining via the same principle as ghosting.
Mold damage aside from water damage mold growth on your ceiling is also a likely cause of the brown spots.
Walls are also common habitat for brown mold to grow especially in damp or dark spaces such as ceiling room and basement.
Cleaning soot from ghosting is extremely hard.
Mold is often dark but it can come in other colors.
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.
When a portion of the ceiling stays damp for an extended period of time a yellowish brown mold stain can form overhead.
It may not have been mold.
Typically your only recourse is to repaint.
Sometimes the water droplets dry out and only leave behind the stains while in other cases the dripping seeps through the ceiling and you have a leaky ceiling with brown stains.
The second cause of ceiling discoloration may be related to moisture but is not directly caused by it.
How to safely clean mold off of a ceiling.
Ceiling mold growth is typically black.
In this case it was due to areas of missing insulation in the attic.
Left untreated the mold stain may grow and become darker over time.
The soot attaches to cold spots on the ceiling.
Brownish spots on the ceiling can be fluids gross i know from the bugs.
If left unchecked brown mold can grow thicker taking on a fuzzy or even hairy appearance.
The spots also may be mold.