try e-cover washing up liquid dipped in the bucket on these,they don't look too bad,try it you'll be suprised at the result-cheap too to buy,dilution wise you'll have to work it out yourselves on this one-guess neatish first then adjust,solvent
>:(have used that for years when fitting windows)-don't bother mate,on a job that size by the end of it your skin will look like a prune/you'll have the voice of jack duckworth by the end of it and it'll cost a packet unless you get a drum of it,if it was me doing them,i'd be spraying tfr/e-cover with a backpack or trolly then blasting off with a petrol power washer set at a low pressure(just my thoughts)i'd probably use a good brush aswell to speed it up not a vikan gardiners all the way would work very nicely
