Granite floor tiles

[Gentleman Jim]

Hi colleagues!
Another question for you especially if you do a lot of natural stone work.
I have a small (3m2) floor to lay with granite tiles (600x300). They seemed to be highly polished so I guess they're factory finished. Do I need to seal them before laying, after laying and before grouting, after grouting, all three, or not at all? The sub. is concrete and flat so I was going to prime with APD first and then use a single part flexi adhesive, 1mm spacers and grey grout.
Any advice and/or info to go along with this would be gratefully recieved.
Regards
JIm

 

[wayne]

i always seal polished grnite with lithofin stainstop. i would normally use rapid flex adhesive with flexible grout. if its an old floor i doesnt need priming but if you have the primer there is no harm in using it

 

[DHTiling]

hi jim ..use a penetrating sealer and just apply once before grouting no need for any more make sure you wipe any excess off before it dries...i would recommend lithofin kf impregnator........dave..

 

[Gentleman Jim]

Thanks for your help chaps.
Dave - when you apply after fixing and before grouting do you need to be careful about over-doing it? Also do you just brush it on or use cloths/rollers.
Thanks again,
Jim

 

[DHTiling]

use a sponge roller..the small type like you use for radiators etc.....dave..

 

[Fred]

Did granite floor in black for a builder when I started out. Gave me white addy and no sealant. Of course it came though and all clouded. Builders..............

Then he tried to blame me when it all went pear-shaped..................

 

[webby]

I personally wouldn't bother to seal before I grouted.Depends on how confident you are.Having said that I very rarely seal limestone or travertine floors before I seal them either.After grouting I would put 1 coat of Lithofin Stainstop on polished granite with a lint free cloth.If screed is fairly new I would probably seal with primer.Older floors I wouldn't bother.Use single part flexible adhesive.

 

[-silent-]

i layed some granite tiles in my kitchen the other day. i remember reading on the site i brought them off no need to seal them

they are black polished granite tiles

would you guys recommend sealing them.. also i have already grouted

 

[yrag1964]

Hi silent!! I would try a tile in a corner somewhere, coat it with sealer and see if it soaks in if it does do the whole floor mate

 

[-silent-]

cheers dude i will see what happens