Before Applying Dulux Trade Weathershield Smooth Masonry
Ensure surfaces to be painted are sound, clean and dry (new surfaces particularly must be fully dry).
Wash down previously painted surfaces with a detergent solution to remove all dirt, grease or chalking paint where practicable.
Rinse off with clean water and allow to dry.
Carefully scrape back to a firm edge all areas of poorly adhering or defective coatings and rub down thoroughly
Treat any areas affected by mould, lichens, algae and moss with a Fungicidal Wash*
Make good minor defects with an appropriate masonry filler.