Power Washing Concrete Roof Tiles

As a manufacturer of concrete roof tiles we would not advocate power washing or recoating tiles as this would invalidate any guarantee.

Power washing concrete roof tiles.

Pressure washers use 1 300 to 2 800 pounds per square inch to strip dirt moss and even paint from a surface. Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels. As long as you have the appropriate tools and materials it can even be fun. Initial power wash using the pressure washer wash the roof s surface.

Here are the basic steps to cleaning your tile roof. Cleaning tile roofs is easy. Power washing roof tiles with high pressure devices can damage your roofs underlay and places undo pressure on the material beneath the tiles which can cause ripping and tearing. With tile most are manufactured with at least a light glazing on top of a slurry coating paint pressure washing tile requires a higher blasting pressure starting at 1500psi up to 3000psi.

So many people who are looking to have there roof cleaned ask will pressure washing my roof damage the tiles. Pressure washing in which highly pressurized water is sprayed on the roof to remove any mold algae dirt or grime and chemical cleaning sometimes called soft washing in which chemicals are the main thing that are removing those harmful things from your roof. I also read the the industry body advised against jet washing the tiles as it can damage them because they lose their protective coating and because of people walking on them. By comparison a fire hose sprays at 150 to 300 psi.

You can read more guidance from tile manufacturers government bodies and consumer protection agencies here. So we thought it would be a good idea to pressu. Power washing the tiles will remove fines in the concrete which will affect the lifespan of the tiles. The two main methods for roof cleaning are.

This pressure will erode a surface layer causing it to be more porous. The average garden hose sprays water at 40 to 80 psi. This allows dirt mold and mildew to accumulate and grow faster. This can remove or dull that glazing.

Power washing the tiles will remove fines in the concrete which will affect the lifespan of the tiles. I dont fancy replacing my otherwise good but over 70 year old roof tiles. As a manufacturer of concrete roof tiles we would not advocate power washing or recoating tiles as this would invalidate any guarantee. What are others views on this and how else can we have the tiles cleaned moss removed etc.