granite

[groucho]

Hi all, well got a small floor to do with granite tiles. Is there anything i need to know? going to use x7r addy. I presume wet saw all thw way? sealer?
thanks

[TilingLogistics]

Make sure the floor is 100% flat and bang on. Granite is unforgiving

Kev

[grumpygrouter]

Hi all, well got a small floor to do with granite tiles. Is there anything i need to know? going to use x7r addy. I presume wet saw all thw way? sealer?
thanks

Floor need to be flat as Kev said. Is it screed or timber? Heated or unheated? and yes wet saw all the way. Seal with something like Lithofin Stainstop MN.

[groucho]

floor is screeded.

[groucho]

does the floor need to be sealed before grouting and once after? thanks

[TilingLogistics]

How long has the screed been down? If the area is small I would use a decoupling membrane over the screed for granite. Something like Schluter Ditra or Durabase one. It will make your life so easy.

Kev

[groucho]

Is that just to ease the installation for flatness.

[TilingLogistics]

Exactly You've got it

Kev

[GazTech]

Concrete floor, screeded with Granite tile.
1.Prime ( not PVA ),
2.Set tiles with single part or rapid flexible,
3.Seal Granite with recommended product,
4.Grout with flexible grout.
NB. On larger areas, some form of movement joint may be required. as outlined in British Standard BS 5385: Part3:1989:Clauses 19 and 23.6

[Fekin]

Concrete floor, screeded with Granite tile.
1.Prime ( not PVA ),
2.Set tiles with single part or rapid flexible,
3.Seal Granite with recommended product,
4.Grout with flexible grout
NB. On larger areas, some form of movement joint may be required. as outlined in British Standard BS 5385: Part3:1989:Clauses 19 and 23.6

Don't be so vague Gaz

[GazTech]

Don't be so vague Gaz

Sorry Adam, just for you then mate, in brief......


a. Over existing and/or scructural movement joints.
b. Around the perimeter of the floor and where tiling abuts columns, curbs, steps and fixed plant to base.
c. In larger floor areas tiles should be devided into bays 8-10m intervals.

Where large degrees of thermal movement or vibration are expected, the frequency of movement joints mentioned above should be increased (3.5m intervals are recommended).

[Fekin]

Now your taking the wee

[GazTech]

Brithish Standard is still only a recommendation, you can use ditra if you like....personal preference at the end of the day.......Gaz

[groucho]

thanks for the info all

[Dave]

Concrete floor, screeded with Granite tile.
1.Prime ( not PVA ),
2.Set tiles with single part or rapid flexible,
3.Seal Granite with recommended product,
4.Grout with flexible adhesive.
NB. On larger areas, some form of movement joint may be required. as outlined in British Standard BS 5385: Part3:1989:Clauses 19 and 23.6

Gazzzzzzzzzza....why grout with num 4........ ......

[GazTech]

Gazzzzzzzzzza....why grout with num 4........ ......

Doh...well clocked..

[Dave]

......