How Do I Clean Up Walls

As you can see it's really discoloured with black and orange mould.
Plus hairy moss growing on top.

The paintwork maybe to far ruined to bring it back totally.
I  diluted the Spray and Away at 5 to 1. I wore mask, gloves and goggles.
I worked top down paying extra attention to the top as
it had heavy moss growths.

There was a lot of wind funnelling up the road so made sure the
Spray and Away wasn't blowing back on me.

You can also spray lichen covered rock walls. They can take 16 -18 weeks
to clean up depending on rain fall.
Click here to order H7's Spray and Away Moss and Mould Killer