Clean the roof tiles with a high pressure water spray.
High pressure clean roof tiles.
Rent or buy a pressure washer and clean your tile roof using a solution of 1 percent household bleach to water.
Give the anti moss spray time to do its job and then use the high pressure cleaner to wash the tiles down.
Operate your pressure washer at 1 200 psi and keep the nozzle at least one foot away from the tiles as you work.
At this point the tiles become wet and slippery.
It is a quick and easy way to remove all dirt and growth from the surface of your roof.
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.
Working on cleaning a tile roof which wasn t cleaned for the last 5 years.
Use water to clean your roof tiles.
Cleaning with high pressure.
When it comes to cleaning tiles particularly hard tiles like ceramics a form of high pressure water cleaning is utilised.
Before cleaning the roof tiles one uses a high pressure cleaner with a dirt blaster.
Some people use high pressure water spray to clean the tiles but that can damage the tiles.
It s better to use an alow pressure water hose and gentle brushes to clean the tiles though only.
Now its time to wash the anti moss spray and other debris of the roof.
This will remove all the moss and lichen as well as any built up dirt.
Any identified faults need to be repaired before roof cleaning commences because high pressure spray could cause roof leaks if the tiles are compromised.
A typical roof is designed to withstand the elements but it isn t designed to protect your roof from water hitting it at such high pressure.
Because of the rotary motion of the dirt blaster and the strength with which the water is sprayed onto the roof tile mosses and algae will be removed easily.
As you did in the previous step walk backwards when you are spraying away from the wet tiles and onto the dry.
The ridge of a roof i e the high point where two tiled roof surfaces meet should be checked and cleaned along with the integrity of all cement bedding under each tile.
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.
This is done from top to bottom in order to avoid water under the tiles.