Just got my son to go on roof and do a test re getting the tiles cleaned and moss removed.
Doing a well good job that would remove all moss and clean up the tiles would take around 10 hours with a cheap power washer and then I have the issue should they then be sealed, I have googled this and get conflicting reports as to whether its worth sealing or not.
Doing a quicker job that will get rid of most of the moss but not clean the tiles to well will take under an hour and would think unlikely to require sealing. This method may require this being done more regularly to clear moss when required.
I am favouring the quicker version but whats the panels view? I am not too bothered about `looks` as I am more interested in getting rid of the moss but dont want it to be a yearly event.