Floor screed drying time - advice please

[mick7]

I'm having a 65mm thick ready mix floor screed laid tomorrow over, what would you recommend is the earliest time I could lay 60 x 60 porcelain floor tiles on it. Bit desperate as i cant install the toilet until the tiles are laid - or any ideas - its a back to the wall loo.
many thanks
Great helpful forum

 

[devonmark]

you are looking at around 4wks..

 

[davy_G]

Building regs are 1 day for every 1mm of depth. Thats 2 months give or take. That is however under normal drying/curing conditions. If the heating etc is on now and again I think 4 weeks is more than suffice. I tiled mine at 4 weeks and no probs.

 

[grumpygrouter]

Check out the use of Ditra matting from Schluter. It says in the documentation, you can install tiles as soon as you can walk on the screed. Look at the detail on the website - http://www.schluter.co.uk/produkt.aspx?doc=6-1-ditra.xml&pg=infoshttp://www.tilersforums.com/redirec...uk/produkt.aspx?doc=6-1-ditra.xml&pg=funktion

Grumpy

 

[mick7]

ditra matting

hurray, this looks like the ideal solution. I used this in my bathroom over ply, it was quite expensive though. I used their branded adhesive( very very expensive) to stick it down to the ply in the bathroom.

Any advice on what to use to stick it to the concrete?

 

[grumpygrouter]

Check out the installation guides on the Schluter site, I think, but don't quote me, that you use standard adhesive, not flexy, on both sides. I.E BAL rapidset or Ardex S16 or something similar from other manufacturers.

I also thing you can get the Ditra from Walls & Floors for about £6.5/mtr. (may have to buy a full roll though)

Grumpy
----
I have just checked - 5mtr roll £65 +vat

Grumpy

 

[mick7]

Many thanks, looks like Ditra it is then.

 

[Perry]

or you could fit your loo siting on a piece of 12mm board and temporary fit it do the rest of the work while the screed cures/drys in 14 days
Regards Pete

 

[mick7]

Trying to find a stockist now of the ditra matting at a reasonable price. Any links please.

 

[grumpygrouter]

Hi Mick, www.Wallsandfloors.co.uk or www.floorheating.ltd.uk but if you need more than 5m then the first one is way cheaper.

Grumpy