[waynebarry]

Hi can anyone tell me what is the best way of cleaning Portland Stone?

[terrazzoman]

is it vertical or horizontal and how many m2

[waynebarry]

vertica,l havent seen it yet ideally by hand.

[Matt Gibson]

I've used a variable speed grinder, with a soft backing pad and a high grit paper before. Re-dressd the stone, it looked great. Just make sure you keep it wet. That only works for flat stone and the methodwas used on upright pillars.

[waynebarry]

Thanks Matt sounds abit complicated to me

[terrazzoman]

you can use running water not under pressure and a nylon hand brush and srubb the stone down slowly (let the water sink into stone ) or sub the work out!!!!

[Matt Gibson]

look up nebulous stone cleaning.