Travertine. Some Q's but mostly uncoupling/decoupling at slab joint

[1justin]

Hi there. I'm new on the forum. I hope this isn't a double post, first time probs..
I've bought myself 50M^2 Travertine and am trying to ask all the right questions before setting out. Conc floor without UFH.

Here are some Q's:

• Slab is 1 year old, conc screed 6 months. Seems to be no dusting. Am I likely to need a acrylic primer?
• Some of the tiles will be on top of old Marleys and another area where the screed is painted. I assume the acrylic primer is appropriate here?
• Couple of spots where old slab meets new. I need to put in a joint for movement and possibly some uncoupling. The old/new joint isn't perfectly straight though, so even with a soft foam+ silicone gap, the edges of the tiles might get bonded to the wrong side for 1-2cm. I'm considering a strip of (say) 10cm wide builders polythene under this section to prevent adhesion. - Is this sensible or silly?
• (I have read Dave Hawe's "uncoupling membrane explained" and looked at the Shulter data, but I still can't answer this.
• My travertine is "light filled/honed". I have bought "ivory" grout. Might I have been better off with white grout? (Ideally you say no )

Rgds

[Dave]

Hi there. I'm new on the forum. I hope this isn't a double post, first time probs..
I've bought myself 50M^2 Travertine and am trying to ask all the right questions before setting out. Conc floor without UFH.

Here are some Q's:

• Slab is 1 year old, conc screed 6 months. Seems to be no dusting. Am I likely to need a acrylic primer?
• Some of the tiles will be on top of old Marleys and another area where the screed is painted. I assume the acrylic primer is appropriate here?
• Couple of spots where old slab meets new. I need to put in a joint for movement and possibly some uncoupling. The old/new joint isn't perfectly straight though, so even with a soft foam+ silicone gap, the edges of the tiles might get bonded to the wrong side for 1-2cm. I'm considering a strip of (say) 10cm wide builders polythene under this section to prevent adhesion. - Is this sensible or silly?
• (I have read Dave Hawe's "uncoupling membrane explained" and looked at the Shulter data, but I still can't answer this.
• My travertine is "light filled/honed". I have bought "ivory" grout. Might I have been better off with white grout? (Ideally you say no )

Rgds

Who..

[1justin]

Double post? - I blame these slow administrators now. But I'm quick to learn.