Anna Kettle wrote:
Any other equally cheap solutions? Bed sheets (polycotton) seem one
possibility. Light, less flammable, and white would reflect the light well.
Will have a quick look at prices.

The technique I'm going to use is a hoover and several rubbish bags.
It is a cheap method :-) but its not going to happen until the waether
cools down

You could always put a sprinkler up there, keep the dust down