The design of your house and the.
Straight line water stain on ceiling.
Don t know what to do with mold if any has formed in the ceiling.
Roof leaks are the main cause of water stains on the ceiling.
Fast forward 4 years and a series of brown stains appeared on the ceiling in that same vicinity.
For water stains coming from your roof you ll need to identify the nature of the disrepair.
If you have a leak in your roof the water will slowly drip its way downward toward the ground.
Yellow stains will likely be painted over with white on the popcorn ceiling.
If the water stain occurs after a period of snow for example this can indicate the formation of an ice dam which requires upgrading your insulation not your roofing.
Some of the stains looked like lines that were dripping down the line from a pile and two looked like singular drops of water the resulted in a stain on the ceiling.
To identify a roof leak you should look for the obvious factors like missing or damaged shingles roof tiles torn flashings or loose screws on the exterior of the roof.
I knew there was water damage at some point i said to myself.
The test suggested by one of the responses ie to put a drop of water on the grout and observe it s absorption rate is a good one and to be tested.