before grouting to bring out the colour. I used 3-4 coats as they were in
a bathroom. Some markings appearing on the floor where oil based cosmetics
have gone on floor but I've just accepted these as it doesn't detract from
the overall look.
If you didn't seal the tiles after laying them, I'd give them a good scrub
and clean, then add another couple of coats of sealant - just check what
effect this will have on the grout.
Yes I think that you are right and the tiles need more sealant, they only
had two coats and the limestone ones in the bathroom had two coats, I think
that they need more.
What effect could the sealant have on the grout ?
Thanks for your interest
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