Pitch Bleeding From Knots: Call:604-PAINTER For All Your Painting Needs

Knots that are visible in siding, either painted or stained, are caused by solvents in the wet paint film dissolving the heavily concentrated resins in the knot itself, making them visible through the dried paint film.  Existing resin buildup on the surface of the know prevents latex paints from covering satisfactorily.  Stains, ranging in colour from orange to brown, will appear over the pitchy area of the knot after the coating of paint has been applied.

According to Rick Anderson of www.vancouversbestpainters.com , painters painting in the Vancouver area (call: 604-painter) the solution for pitch bleeding is that new and future coats of paint also will stain unless the knots are prepared properly.  The knots, and the areas aroud them, should be scraped to bare wood before being sealed.  A coat of exterior grade primer sealer or shellac should be applied over the pitchy knot. Finish with the desired topcoat.

Rick ANderson

www.vancouversbestpainters.com www.604painters.com www.vancouverindustrialpainting.com