Painting Problem: Discoloration Failures

There are a number of conditions that can cause paints or staind to become discolored.  The material I will be discussing will show how to recognize and correct problems that cuase discoloration.

Algae

Algae is a growth that occurs where water is readily available to the painted surface.  Usually, algae forms on the lower portions of the norht exterior walls, often around faucets.  Growth requires some indirect sunlifht and is difficult to prevent.  Many paints do not contain an algaecide; also, paint that warranties against mildew may  not contain an algaecide.

Solutions For Algai Discoloration

Clean the affected area with bleach solution as recommended for cleaning mildew.  Power wash after the application of bleach to remove all algae and biomaterial.  Allow the surface to dry completely, then apply a latex paint which contains both an algaecide and a mildewcide.  Check with a local independent decoration products retailer as to the algae-resistant nature of the paint.  Try to identify and eliminate the moisture source.

Rick Anderson www.vancouversbestpainters.com www.604painters.com www.vancouverindustrialpainting.com