after finishing my new bathroom with travertine all looked superb,got the pat on the back from the wife and left her to admire.

3 weeks later going to use the bathroom i heard a strange sound.sounded like sand being crushed under foot.now i thought i had done everything correct.primed the new ply with mapei product and then a ci membrane.sealed the trav and then grouted. and then sealed again.what i think has happened is the adhesive hasnt bonded to the ply.the tiles are crack free and still look superb.i think the floor is going to have to come up again and use no more ply on top of the ply before going again with the adhesive and tiles.now dont get me wrong the sound is very slight and the grout and floor look amazing,just i know its not right and rather frustrating.
.


ive a on suite to do now in the same material and want to double check where i went wrong.

at the moment i have joists only.what sort of ply do you use,i used wbp before and 18mm thick,is this the best foundation,before the cement board,and is this really totally necessary,i have mixed reviews from the pros locally.

cheers

how long ago, and what ci matting?

Is this old version of Dural or the new CI + version. ?

hi stu,sorry to hear something has gone wrong

so you fitted ci matting ad tyiled onto this is this right

i use cement boards,they are great never had an issue,,are you considering instaling a cement board once removed and tiling onto it?

..sorry to appear blunt and cynical, but one or two uncoupling membranes have proved to have a manufacturing fault.

Ply is a pain but I would have only used ditra on it.
Was your ply exterior grade? And what thickness?
Most ply at the minute is unsuitable for tiling too.
Made in china.

thats quick guys.i used the yellow ci dural duramat.i dont think this is at fault.the ply was 18mm thick and exterior grade sealed with i think mapei g.sealer. and yes i think im gonna fix the no more ply to it in the future as a starting surface.

forgot to say its been down about 6 months now and hasnt detiorated since the first 3weeksany further,

apart from the surface being yellow, can you recall what the "hollows" looked like?

the mat had round circles evenly spaced on the mat with a mesh over the whole sheet.underside was fleecy.


still need a answer on what the sub prep should be.and what mapei products you would need on this install.

There had been problems with that older style matting , where as the polyethylene delaminates from the fleece giving you a crunching sound as you walk across the tiles , a bit like walking on egg shells is the best description.

Oh and Dural were sorting these issues out if you contact them.

this might help, use hardy backer its grided out for you makes it easy to mark out and use, rather than no more ply, also no my ply you have to pilot the screw holes or it will crush at the edges, hardy just drill straight through no fuss. also use slow set adhesive on cement board sometimes rapid drys to quick not giving enough time for the tiles to adhere properly. hope it helps.

Hi Dave ...we have had a few installations with the same problem on the old but Dural have been great in fixing the problems and the new Ci + is great

Originally Posted by Stu Lilley

Hi Dave ...we have had a few installations with the same problem on the old but Dural have been great in fixing the problems and the new Ci + is great

who did you contact to fix the problems.do you have a name to contact.

Originally Posted by Dave

Oh and Dural were sorting these issues out if you contact them.

dave do you have a contact who i can speak to at dural.

Originally Posted by Stu Lilley

Hi Dave ...we have had a few installations with the same problem on the old but Dural have been great in fixing the problems and the new Ci + is great

Hi Stu mate... long time no speak..

Ye Dural have been good, they repaired a 200 mtr one of mine.. i have used the new ci+...

Shame Dural are the only ones to do anything about that problem.. others are blaming fixer error..

Originally Posted by Dave

There had been problems with that older style matting , where as the polyethylene delaminates from the fleece giving you a crunching sound as you walk across the tiles , a bit like walking on egg shells is the best description.

that sounds about right.

obviously the floor gotta come up,and more trav bought.does dural recompensate for failure.i have some matting over,but unfortunately have no bill as i bought a roll off of ebay at the time.

Originally Posted by stuartavo

that sounds about right.

obviously the floor gotta come up,and more trav bought.does dural recompensate for failure.i have some matting over,but unfortunately have no bill as i bought a roll off of ebay at the time.

They inject a resin into the membrane void to bond it back together..ring Dural tech and tell them you think you have a seperation issue.

yep been busy for a while just opening a new showroom and distribtion in kent and it takes all my time....i have heared of a few problems with lesser known makes but did not know the out come....I think Schluter must be laughing though the amount of customers we have who have had ci issues and switched to ditra..Hows are you keeping your self ,,still busy i hope

ye busy

would love to go back to Ditra but prices are crazy...

Originally Posted by Dave

They inject a resin into the membrane void to bond it back together..ring Dural tech and tell them you think you have a seperation issue.

that sounds promising.do you have aname and number to call.

hi stuart just call dural direct thats what id do

will call in the morning and see what they have to say about the matter.

ask for Gerard and explain your situation..

Originally Posted by doug boardley

ask for Gerard and explain your situation..

thanks for that.

i think i have found there number in west yorkshire its 01924 360110

yeah i know its more expensive but deals are available.....and in twenty years i have never had one problem...thats got to be worth it

Originally Posted by Stu Lilley

yeah i know its more expensive but deals are available.....and in twenty years i have never had one problem...thats got to be worth it

You have my email Stu , pass me those Ditra deals over.

I don't take any pleasure in saying this, but any wooden base is the worst substrate for receiving tiles due to wood changing in shape and form with moisture and temp. Also travertine is a weak tile, so the problem is doubled.