Surface should be free from any loose paint, dust and grease.
Growths of fungus, algaes or moss should be removed by wire brushing and water
Any surface cracks or holes should be raked out and filled with Duracoat Internal & External Skimcoat
Treat surface for moulds and algaes if present with Duracoat Fungicidal Wash.
In the case of highly alkaline fresh masonry, apply the Duracoat Alkali Resistant Primer to provide excellent adhesion and integrity.