Hello
Newly plastered kitchen wall, a brownish mark appeared first, was not raining at the time,
2 days later, the mark has appeared as a wet patch , just above the window, up to the ceiling line, it’s got bigger over the next 3 days,
We have checked the guttering, and sealed a join, just today, we dried the wet patch with a hair dryer, it disappeared for a short while, it’s coming back often a few hours, the brown stain what is it, this is a flat fibreglass roof, which has no splits.
Can you cop6 and paste my question, if it’s in the wrong section, can you forward me a llink , if it’s in wrong dept.
Thank you
Jeanie mcsherry