The Message Board

RE: Pebblecrete Courtyard

Posted 401 days ago

Hi Aquarius

I don't know how to help, but I reckon Shannon Lush could help. She is an expert in cleaning absolutley everything and gets questions like this on the radio all the time. You can probably find the answer on her website:

http://www.homepalette.com.au/

RE: Pebblecrete Courtyard

Posted 288 days ago

G'day,
I have found that Bi-Card of Soda and Vinegar is terrific for concrete. For really stubborn discolouration, you could try Hydrochloric acid (HCL) at say 10% concentration with water. Remember, ALWAYS add the acid to the water.
RRV

RE: Pebblecrete Courtyard

Posted 286 days ago

you could hire a pressure gun that cleans concrete pretty well. we wash ours with it just before we seal it
_________
No gardener is really good before he has killed one or two plants.

RE: Pebblecrete Courtyard

Posted 286 days ago

rrvau's post brought to mind something our chemistry teacher drummed into us in high-school....."may her rest be long and placid ; she put water in the acid. She forgot what we had taught 'er ; PUT THE ACID IN THE WATER."
_________
Experience is what you get when you dont read the instructions first.I'm a LEO.I am experienced!

Pebblecrete Courtyard

Posted 285 days ago

There is also LCR (Lime, Calcium, Rust) liquid and also "30-seconds" liquid - forgot exact name, but you dilute it as specified, spray on, wait 30 seconds or bit longer and hose it off. But some stains are quite

RE: Pebblecrete Courtyard

Posted 279 days ago

or if you want a better more modern look you could just pave over it. nice firm solid base.
_________
No gardener is really good before he has killed one or two plants.

RE: Pebblecrete Courtyard

Posted 249 days ago

Blessed be your chemistry teacher Hutcho; first time I've heard that rhyme. Thanks for the concrete cleaning tip Rrvau. I've tried everything else so I'll give it a go.