ste wrote:

Lobster wrote:
ste wrote:
What's the best way of removing algae etc, its all over a caravan that
has been layed up for a while.

Pressure washer?

Sponge / bucket of soapy water / elbow grease?

Tried all three and it hasn't worked,
The algae is ingrained particulary in recessed areas, I thought a spray
type chemical would remove the algae rather than have to scrub it off.

I've still got moss on some areas of the car which won't come off either.

A scrubbing brush was the best solution for a laid-up Land Rover,
combined with a lot of detergent before a final pressure wash to get it
properly clean.