Joined: July 2004
||Posted: 04 Oct. 2019,09:26
Of the multitude of Chinese granites used for external paving, the 654 isn't too bad. It's certainly less problematic than the 603, which is now more-or-less exhausted, but it still has its quirks, chief of which is its tendency to have variable porosity which can result in funny-looking damp patches and a tendency to stain as soon as you turn your back on it.
Here's something I wrote for an enquirer just a day or two back.....
That is a particularly sensitive material to use, and I'm more-or-less convinced now, after a couple of decades of scepticism, that it really ought to be pre-sealed before being laid because it is so bloody precious when it comes to bedding and jointing.
It really must be laid on either trass bedding or silver sand with white cement otherwise it is almost certain to suffer with reflective staining and, if you've not had it pre-sealed, get it sealed in situ. The big problem with that is working in the New Year is probably the worst possible time for in situ sealing! The stone needs to be BONE DRY for an effective sealant to work.
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