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Before priming you
should remove any dirt, chalk or treated fungus or algae.
Scrub the surface area with detergent, water and a stiff
bristle brush. Rinse the surface thoroughly, and allow it
to dry completely before priming. Another effective surface
cleaning method is power washing with water. Never use harsh
cleansers since they can infiltrate the substrate and inhibit
paint performance. If using bleach to remove the fungus
or algae, be sure to wash the area thoroughly and allow
to dry before applying paint. Hold the power spray nozzle
150mm to 200mm from the surface to prevent damage, and at
a horizontal or downward angle only. Be careful around doors
and windows since the spray could have enough force to shatter
glass and damage seals. Follow all manufacturer's instructions.
Wear goggles and water repellent clothing and footwear.
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