FAQs : Exteriors

How can I deal with mould on an external wall?

Firstly, repair any leaks and check for defective damp proofing. Treat affected areas with Dulux Trade Weathershield Multi-Surface Fungicidal Wash. Leave for 24 hours, wash down to remove residues and allow to dry thoroughly - some stubborn growths may need a second treatment. Any dark patches growing through a paint system may well have become trapped during previous work.