Ditra Matting Adhesive

[Mike Strutter]

Hi guys, going to be putting the Ditra Matting down for the first time next week and was wondering what to stick it down with. I've seen the Ardex AF200, but wasn't sure whether to get some ordered or whether i could use the Ultra Rapidset i'm going to be laying the tiles with to lay the matting?

 

[grumpygrouter]

You should use adhesive suitable for the substrate Mr Strutter. The ardex stuff I think you will find is particular to timber floors.

 

[Mike Strutter]

The floor is that orrible green chipboard stuff, feels very solid though, however the customer does NOT want a large lip in the doorway so ply is a no no.

 

[DHTiling]

why ditra..?.. it is not a substitute for ply you know....

 

[grumpygrouter]

If the floor is solid, why don't you use 6mm hardie? Slightly less fiddly than Ditra in my opinion.

 

[DHTiling]

Why do you find it fiddly russ..?..

 

[Mike Strutter]

I've got 2 x 2m shower rooms to do Dave, and the customer is not keen on ply because of the lip created by it and the tile. I thought that the Ditra would prevent both water penetration and any movement cracking my joints, and leave them with an acceptable lip to carpet to.

 

[grumpygrouter]

Why do you find it fiddly russ..?..

Cos I've only used it once and I spent quite a while trying to ensure that the dovetails were filled with addy. I found it kept rolling out so I had to go back over in different directions to get it as full as possible. Apart from that, it was easy. it looks straight forward when you see the videos, but that part caused me a little concern.

 

[grumpygrouter]

I've got 2 x 2m shower rooms to do Dave, and the customer is not keen on ply because of the lip created by it and the tile. I thought that the Ditra would prevent both water penetration and any movement cracking my joints, and leave them with an acceptable lip to carpet to.

For 2x2 bang the tiles down with Fastfex.

 

[DHTiling]

No probs.....but i would over board first with 6mm ply( if the chipboard is solid ) then stick the ditra down( 2 part adhesive ) and seal the joints to create a water proof floor.....then tile on top with normal flexi......but the floor must be solid to start with....hardi will give you a water resistant floor but not water proof.....

 

[Mike Strutter]

I recently laid travertine down on a T&G Chipboard floor, i was advised by a local tile firm to seal the boards first and then mix 50/50 water and Ultra flexi prime and use that to mix up the addy and away i go. Would that be the same idea Grumpy?

 

[TilingLogistics]

I would use Ditra with ardex AF200 or Evostick or similar onto chipboard provided the floor is solid. After all you are sticking a fleece to wood!

Kev

 

[DHTiling]

I would use Ditra with ardex AF200 or Evostick or similar onto chipboard provided the floor is solid. After all you are sticking a fleece to wood!

Kev

Iv'e never really been a fan of tiling/sticking directly to chipboard.....do you think either of those will work well on chipboard kev..?...

 

[grumpygrouter]

I recently laid travertine down on a T&G Chipboard floor, i was advised by a local tile firm to seal the boards first and then mix 50/50 water and Ultra flexi prime and use that to mix up the addy and away i go. Would that be the same idea Grumpy?

No mate, fastflex is BAL's ultra flexy stuff for wooden floors. It doesn't set hard as such, more like a really really dense sponge.

If the floor was proper solid, I personally, and you didn't want a lip, would use Ardex-flex 7001 after priming the floor with Ardex P51. You will use less than a bag for that area. Cheaper than fastflex too.

However, if you are looking for waterproofing as well, ditra will be fine, again as long as the floor is solid.

 

[Mike Strutter]

Ok Grumpy, thanks very much, i'll see what my supplier has got in stock, i'm doing the job Tuesday, and i'll take it from there.