Advice against Scammers ( Roof Cleaning,Coating)

Why You Should NEVER use a Pressure Washer on Roof Tiles

The most common roof tiles in the United Kingdom are made from concrete and have a sandy/granular finish on the exposed side of the tile. This part of the tile is designed to gradually wear off until the tile needs to be replaced, usually after 80-100 years of normal weathering.
Using a high powered pressure washer may strip the surface of the tile and shorten it’s life expectancy. 

As a manufacturers of concrete roof tiles we would not advocate power washing or recoating tiles as this would invalidate any guarantee.
Power washing the tiles will remove fines in the concrete which will affect the lifespan of the tiles.