Before Applying Permawhite
Surfaces must be clean, sound and free of dirt, dust, grease, wax, wallcovering adhesive, soap film, loose paint or other surface contamination.
Remove all existing mould and mildew before painting using a Mould Killer & Remover.
If you are concerned about mould and mildew behind walls, underneath flooring, in ventilation systems or other unseen areas, contact a professional who specializes in mould and mildew remediation.
For commercial buildings and schools follow appropriate guidelines for mould removal.