I liked the green look but.
Jet washing roof tiles.
Interlocking roof tiles are not designed to be walked upon foot traffic.
Just brush off with a stiff brush and check any mortar joints for cracking while up there.
Older concrete roofs can also begin to leak from small pinholes or porous areas in the tiles that are opened up by the high pressure water jet.
Removal of lichen and moss by jet washing will invariably remove the granular surface finish and potentially damage the structural integrity of the tile this process followed by a surface treatment application would invariably invalidate any tile manufacturer s guarantee.
Im pleased to see you have commitment to your trade as do i i to have been repairing roofs for 22years and have gained a good knowledge and understandings of roof condition i find that roof coating forms an external vapour barrier putting the sweat on the exterior where it should be jet washing alone can remove surface resistance of concrete tiles but providing a much better appearance.
Aqua jet make it clean.
So many people who are looking to have there roof cleaned ask will pressure washing my roof damage the tiles.
I took mother nature half of a century to build the green moss on the tile roof and it took me 4 hours to get rid of it sad.
Jet washing a roof causes more trouble than it s worth.
22 may 2014 at 11 42am.
Initial power wash using the pressure washer wash the roof s surface.
The spray is far too fierce.
The best method for cleaning and maintaining concrete and clay tile roofs are exterior cleaning solutions like bio shield.
So we thought it would be a good idea to pressu.