here's a good one ....

[DJ Carroll]

http://www.raystclair.com/mediaViewer.aspx?ad=adTV1&type=tv&path=roof-cleaning

Skip to the second half of the video....

 

[john neilson]

Pressure washer being used

 

["Red"]

It's not high pressure but definitely more than what's needed and waaay too close to the surface.