Can people recommend what are the most economical materials -that will do the job- and method to lay granite tiles on a house ground floor (dining, kitchen, etc)?
The substrate is a sand/cement screed with underfloor heating water pipes in it. It is dusty but level (it's new).
The tiles vary from 18 to 22 mm thick. They need sealing because they are quite absorbent.

Originally Posted by fredmila

Can people recommend what are the most economical materials -that will do the job- and method to lay granite tiles on a house ground floor (dining, kitchen, etc)?
The substrate is a sand/cement screed with underfloor heating water pipes in it. It is dusty but level (it's new).
The tiles vary from 18 to 22 mm thick. They need sealing because they are quite absorbent.

Granite?

SNAP............Granite ?

Colour and size m8 ??

Sounds like Slate to me?What do you mean by new(Screed). You have to be more specific with UFH!How old is the Screed!! Did you go "UP,STAY,DOWN, with the UFH Temperature, not the dog!?
2Balls

More info: the granite tiles are 30 x 60 cm. The screed was laid a few months ago so it has had plenty of time to dry (it has gone through a summer). The UFH is currently running at 10-13 deg C room temperature. it went from 4 - 7 - 10 - 13 deg at 2deg per day.

The tiles are light colour only some specs are darker

Is it like ony of the samples shown on this web site? and why are they different thicknesses?

Granite Samples Granite Worktops Granite Suppliers Granite Stonemasons

Polished stone(shinny)? 2Balls

Originally Posted by grumpygrouter

Is it like ony of the samples shown on this web site? and why are they different thicknesses?

Granite Samples Granite Worktops Granite Suppliers Granite Stonemasons

The nearest one is Bohus Grey and it is polished. Why they are different thicknesses, probably because they are as cut before reducing them to 8-10mm thickness to make them the same or something like that

If you are after a monolithic affect once laid you will probably need to get them ground and diamond polished to get the best out of the granite tiles, and this could cost you around £40-£60sqm so i would choose a different tile unless you are prepared to do this otherwise you wont get that really beauty out of them, even with the best tiler fixing them.

Originally Posted by enduro

If you are after a monolithic affect once laid you will probably need to get them ground and diamond polished to get the best out of the granite tiles, and this could cost you around £40-£60sqm so i would choose a different tile unless you are prepared to do this otherwise you wont get that really beauty out of them, even with the best tiler fixing them.

I would have to be bonkers to have the tiles "ground and diamond polished" I think I will have to answer my own question and use thick or thin adhesive with a deeper trowel to be able to adjust the tiles heights

Originally Posted by fredmila

I would have to be bonkers to have the tiles "ground and diamond polished" I think I will have to answer my own question and use thick or thin adhesive with a deeper trowel to be able to adjust the tiles heights

Sort the tiles out before fixing and start fixing the thickest first.

And use the thinner ones against the skirtings/edges of walls and for cuts