Sealing a concrete floor before tiling

Joined
19 Jan 2007
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Bristol
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United Kingdom
Hi,

I have filled in the hole i dug (1ft deep) 3x6x1ft deep , with concrete, and let it dry for 3 weeks.

Yesterday, i leveled the floor with febflor plus self-leveling compound, which actually is not 100% self leveling so now its about 3mm out across the surface of 3ft in width and 6 ft length -- never mind!

Now im going to tile the floor with ceramic floor tiles. Do i need to seal the floor with a floor sealer first, and how much height can i build up with the tile addasive, i would like the floor to be finished at 10mm higher than it is at the moment, including the thickness of the tiles.
 
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I'm suposed to be tiling the floor on saturday.

Does anyone know if i need to seal the new concrete or not??!

Please someone tell me - im desprate.
 

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