Recommendation: Ditra Matting

[peter crouch]

Can anyone help. Looking to tile a utility room which is part of a n extension on the back of the house. As the floor level are not the same on advice I've raised the floor level in the extension to match the original. When I'm tiling sould I use a matting such as Detra to bridge the join between new and old. The extension was built up using ply

Thanks in advance

[Sir Ramic]

What is the substrate of the original floor?

[peter crouch]

concrete

[Sir Ramic]

You will need an expansion joint between the 2 substrates.
Ditra is for lateral movent and not for deflection. You can use it of course with the expansion joint or use backer boards as long as the wood floor is solid and free from any movement.

[tommyzooom]

Peter, as you are on 80,000 a week with tottenham, you should pay someone like me to do it for you!!!



















Sorry, couldn't resist

[NVH Stone & Cer]

Am with Sir Ramic on this one. I did a 50m2 opus pattern travertine floor this year (see my pictures under Travertine Opus Floor). Half was on concrete and half on 18mm Plywood. To be safe i used Dural's CI matting and my customer asked for a matching silicone movement joint. Always hard to sell the need of movement/expansion joints to domestic customers.

[peter crouch]

Are you saying that the tiles must form a joint over the join in the two substrates and then silicone instead of grout. Can you not place the tiles so they sit over the joint

Is dural matting the same as ditra?

[NVH Stone & Cer]

Yes Peter, you should have the joint over the two substrates. In most large floor domestics jobs i do the customer don't like movement profiles like what you see out big shop floors. The joint should have no grout in it at all and the silicone should fill all the joint space just like grout would.

Yes Dural's CI matting does the same job as ditra. I find it easier to use. . I buy it direct from Dural.