Joined: July 2004
||Posted: 08 Oct. 2019,11:52
I don't think that's eff: I think it's cement staining caused by the clueless eejits that laid the stone so badly in the first place....just look at all those amateurish crossed joints!
It certainly looks like cement hazing, probably from the jointing process - did you see how they did this part of the work?
The photies are small, which is mlimiting my certainty, but I'm 90% sure it's cement haze, and, assuming I'm right, it's going to be a bloody nightmare to rectify because, as good a stone as is Kandla Grey, it is unfortunateloy susceptible to acid and so I can't recommend such a cleaning method.
There are dozens, possibly hundreds of similar threads in The Brew Cabin about cleaning cement from Indian sandstone - run a search using the buttons above, but don't build-up your hopes!
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