You can read more guidance from tile manufacturers government bodies and consumer protection agencies here.
Jet washing concrete roof tiles.
1 200 to 1 500 psi is adequate to remove dirt and stains without.
These materials can last much longer than asphalt but take extra care to clean without damage.
Roof tiles or slates gradually change in appearance over time through the action of natural weathering.
I dont fancy replacing my otherwise good but over 70 year old roof tiles.
Power washing the tiles will remove fines in the concrete which will affect the lifespan of the tiles.
Can i clean or jet wash my 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.
You should also have the recommended nozzles appropriate for your type of tiles.
The use of high powered jet washes is not recommended.
Can you walk on roof tiles.
Hire an experienced pro to help make sure that your project doesn t turn into a repair job.
The best method for cleaning and maintaining concrete and clay tile roofs are exterior cleaning solutions like bio shield.
Tiles made of ceramic clay or concrete were not meant to support human weight.
The trend for cleaning roofs is now very common yet few companies add a long term answer as cleaning alone takes the surface off the roof tiles.
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.
Concrete adding a moss killer industrial not diy store is still only going to prevent moss coming back within 18mths 2yrs.
Pressure cleaning a roof when done properly using rotary cleaning equipment is safe cost effective and will not force water through or under tiles as the jet angle is controlled and always points away and down the roof rather than into or all over the place which is the case when blasting with a lance or wand is used.
Pressure washer a pressure washer is a must in tile roof cleaning.
Concrete and clay tiles have small pores that can only be cleaned by a manual brushing or with the use of a pressure washer.
What are others views on this and how else can we have the tiles cleaned moss removed etc.
Roof tiles average 425 to clean.
