You've got damp patches that you want to paint over - and you don't want to have to worry about them coming through the paint again later.
You will need
See how it's done
Step by step process
Cover furniture and carpets, and keep windows and doors fully open to ensure good ventilation during the application and drying processes. Make sure that the original cause of the damp problem has been rectified before treating the area.
After stirring well, apply Polycell Damp Seal generously with a brush. Work it well over the affected area and a wide surrounding area. Allow it to dry overnight before applying paint or wallpaper.
For added ease use Damp Seal aerosol for a quicker application and drying time.
Clean the brush with Polycell Brush Cleaner.