Please can anyone suggest a cleaning solution for the removal of concrete residue from my patio slabs. The men who laid the patio had allowed it to dry and I have tried pressure cleaning to no avail.
Your advice would be most appreciated...
Rob UK
Patio Slab - help required?
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krismac
- Posts: 9
- Joined: Sun May 11, 2003 12:16 pm
If you have lumps or snots of cement on your slabs try tapping them gently with a hammer but dont damage the slabs,that way you break down the lumps which then you can pressure wash off the residue easier.If that fails try using a watered down acid solution which you should apply all over your patio using a decorators roller on a pole.Then wash over all your patio.This method means any discoloration will be evenly spread and not patchy.
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84-1093879891
Kris is right - use a diulte Brick Cleaning Acid (Hydrochloric, sometime called Muriatic) which you can get from a decent BM. BE CAREFUL - it's nasty stuff and will take the skin off your hands if splashed about willy-nilly.
There's more info on cleaning cement stains on the Dealing with Stains page of the main site.
There's more info on cleaning cement stains on the Dealing with Stains page of the main site.