Hi all! 
After some suggestions as how to best repair this limestone (known as Jura blue) that has some serious staining and damage from moisture. My idea is to cut back heavily and densify with a lithium or sodium densifier (or both!) then return to polish but not sure at this stage how the dark framing around tiles will end up.
Customer is aware this will return as the stone is simply in an area it shouldn’t be . But he is prepared to pay and maintain.

TIA as usual for any input , look forward to it .
Cheers! 
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Matt Grundl
Project Manager
E Matt.sealwerxwa@bigpond.com
M 0466 624 228