Thanks blast away that's exactly was I was getting at, yes without chems you could probably got the same results however with the amount of pressure would have had to use the whole wall would have needed to be rebuilt.
Great outdoors I don't think you get where I'm coming from I don't need chems for everything I do as the kit I have does the job, the spec is higher than your average pressure washer.
What I'm interested in is hypo, or any other chem to help finish off a job well done by removing the black spots etc.
Bdcs and blast away do you think oxygen bleach would do the job as well? I understand it may take longer but like I say I wouldn't need it all the time so would need something I could store.
Many thanks,
Gordon
I've had a play with sodium percarb, still got about 20kg in a drum. Mix it with hot water. Like Carl said takes longer.
Lee have you finished the job in blackburn or will you be there on monday, if you are going to be in blackburn drop me a text and i will call in for a chat
Did that one phase in one day and the other phases will be done when I get the nod, dunno when that will be but need notice I've told them. Although we're back in Blackburn tomorrow morning (Sunday) to clean a bit of tarmac for the same contractor on a primary school, bit of an urgent request as they hand over next week. It's round the corner from Wimberley estate we did Trev off Pleckgate Road if you're coming.