Mystic sky limestone help-acid damage!!

[taylorc]

Thanks for moving the thread, I realised after I posted that it was in the wrong part but I didn't want to double post.

It's funny you mention method statement as I was joking with the other half about asking for a method statement, gant chart and risk assessment to cover the remedial work.....

Any how's, he has said that he has been advised by a supplier to consult with LTP and they have recommended the following approach..

1. Deep clean and neutralise with LTP Grimex
2. Impregnate the stone using LTP Mattstone
3. Restore the colour and seal using LTP Stoneoil

I myself have spoken to LTP and this is indeed their advice and they are sending me some free samples of Mattstone and Stoneoil to test on a single stone (incidently a test area has already been scrubbed with Grimex and the area is now a more even texture but with obvious etching).
To be fair the contractor has said that if this does not work then he will obviously have to look at replacing the patio but that is a last resort (which we ourselves do not really wish to endure unless we have to).
Fingers crossed and I will update, thanks again for all the help and advice.

[Tony McC]

Please do keep us updated. I don't get much chance to experiment with LTP products, so I'd be very keen to hear about or even see the results.

[RAPressureWashing]

Please do keep us updated. I don't get much chance to experiment with LTP products, so I'd be very keen to hear about or even see the results.

And please keep me informed,
I am interested on how he is going to get rid of the etch marks with those products, but time will tell.
As I said this is reverse able without having to replace the patio.

[lutonlagerlout]

I have seen the LTP sanstone sealer in use and it looked akin to lithofin from where I sat

LLL