Cracked floor

[uptonboy]

A friend of mine has got a tiled kitchen floor, about 25m2 including wc and utility. Part of the floor is laid on ply and the rest is on concrete. It has been down about 4 yrs. A crack has appeared through the tiles and grout line where the two substates meet and you can feel a definate bounce on the plyed area. His plan is to take up the tiles and reinforce the plyed area with extra noggins etc and then relay new tiles.

Do you think this would suffice?? I have suggested covering with ditra to prevent it happening again views welcome please.

The kitchens not coming out so ply would need to be cut back as far as poss and then relaid

[grumpygrouter]

Ditra will not combat deflection and you must split it to put in a movement joint where the substrates meet anyway. Only real solution is to strengthen the timber part of the floor.

[Sir Ramic]

I concur with Grumpy.

[Rob Z]

Hi Everyone,

Is the brand "Tremco" available in the UK? If so, I can recommend their products for movement joints. They have a lot of colors and the products are fairly easy to apply and get a nice finish. The stuff is durable and also not that expensive.


Vulkem 116 - Tremco Commercial Sealants & Weatherproofing

[grumpygrouter]

Not heard of it myself Rob.

[tile55]

Hi Everyone,

Is the brand "Tremco" available in the UK? If so, I can recommend their products for movement joints. They have a lot of colors and the products are fairly easy to apply and get a nice finish. The stuff is durable and also not that expensive.


Vulkem 116 - Tremco Commercial Sealants & Weatherproofing

Never heard of it either, we have Schluter and Durall to name but 2.

[Rob Z]

I get that material at the masonry supply house-same place where I get metal lath, lime, portland, etc. It's marketed more for the masons, concrete work, etc., and used for movement joints in building, driveways, pools, and so forth. I've never seen it at a tile store and only stumbled onto it one time when I asked the masonry salesman about what was available to make expansion joints for commerical jobs.

[Dave]

Has to be schluter for me..

http://www.tilersforums.co.uk/tile-a...rol-joint.html

[Rob Z]

Dave, Good info there...I attended a Schluter training class some years back, and they really got into the science of how they developed those guidelines that you posted.

I like Dilex, but amazingly I can't get a lot of people to go for it. Even with architects, I have more chance of using something to make a soft joint than I do in getting them to accept Dilex. I don't understand why.