@jen_jen wrote:
A couple of years ago we had a slow leak from our hot water tank which sits just above the kitchen, and the artexed ceiling in the kitchen was watermarked. We left it for a few months to dry out then painted it, but each time we paint the ceiling it looks fine for a short while then the watermark starts showing through again.
How do we get rid of it?
under coat it before you emulsion it
or pay silly money for some stain block