The bottom 18" of my downstairs cloakroom is below the damp course.
Several small brown spots keep appearing on the wallpaper. I've tried applying more emulsion, gloss and then emulsion and PVA and emulsion but nothing seems to work. Any ideas?
Hi. Try zinsser bin primer sealer stain blocker. That normally blocks it out but if it still comes back through then it means theres still a leak problem.
Good ventilatoin, heating and a damp proof membrane to be applied on the and a non-porus paint to be used or paper. In some situation injecting a dpm into the wall can be done.
Need applications(zinsser)Cover stain
Use zinsser stain killer.
Best to Remove wall papers. As will hold Damp,
Once removed. Look at wall to see if Damp.
Suggest useing a lime wash to let wall breath.
Acrylic paints Trap water behind paint. Causing problems