screed instead of latex

[Diamond Pool Finishers]

yes ditra looks good idea or tile backer board , ardex eb2 is a rapid hardening cement for floor screeds instead of (OPC) that can be tiled on in 3 hours!!!!! for future ref good luck mate

 

[bluesky]

cheers gooner and all others , will order ditra on monday as floor has limited height available due to those bi fold doors and they want to basically walk straight out onto patio.wish they`d spoken to me about options etc!ta again

 

[bluesky]

update.builder now wants to put 3mm latex on top of screed instead of having cost of ditra knocked off his bill !i`ve said i dont believe this is making a solution and still wouldn`t be able to be laid until screed is dry anyway .so my original solution still seems to be the way forward - ditra which can be laid asap .can any one back me up ?

 

[Ajax123]

Yes

If you put the tiles or latex down whilst the screed is still wet they are likely to blow.

If the underfloor heating is not comissioned before tiling commences the tiles are likely to blow

If the screed is too thin (which it is) and subsequently cracks with the tiles in place the tiles are likely to blow

You could look at an Epoxy DPM but these are not recomended for heated screeds

If you use Ditra all of the problems above are avoided and the tiles won't blow (I can't offer that guarantee of course - litigation litigation blah blah blah but you get the picture)

Simple...

Oh by the way if you do it his way and it goes wrong you could well find yourself liable

 

[grumpygrouter]

Bluesky, sounds to me as if this job is going to bring you nothing but grief and could well cost you dear in the long run. Might be better to cut and run now before it gets messy!

 

[smurf21]

or.........you could tell the builder to wait till the screeds dry that wont cost as much as replacing a blown floor

 

[Ajax123]

or.........you could tell the builder to wait till the screeds dry that wont cost as much as replacing a blown floor

Given the depth and dimensions of the screed and the fact it is heated I am not at all convinced that it would remain stable in operation so even if it is dry you could end up with the tiles blown due to substrate movement.

 

[bluesky]

hi again ,ta for all the help .update:had now agreed to use ditra until the bulder has told the customer that i need to put down bal bond(sbr?) product prior to tiling to guarantee good bond!i explained that i didn`t want to fix the tiles directly to the screed .and already there is a tiny crack inthe screed after the heating was tested .would love to walk away but this is for a friend of a friend.am i correct about bal bond?
ta:yikes:

 

[Ajax123]

hi again ,ta for all the help .update:had now agreed to use ditra until the bulder has told the customer that i need to put down bal bond(sbr?) product prior to tiling to guarantee good bond!i explained that i didn`t want to fix the tiles directly to the screed .and already there is a tiny crack inthe screed after the heating was tested .would love to walk away but this is for a friend of a friend.am i correct about bal bond?
ta:yikes:

Balbond wont stabilise the substrate so could not make that reomendation - Sounds to me like the builder is just trying to penny pinch.
Balbond is not necessary on sand cement - a standard Acylic Primer (From memory Schluter recomend Bal APD or Ardex P51) stick the ditra down with a standard flexi addy then tile on top. It does not matter if the Ditra delams a bit due to substrate movement.

 

[bluesky]

exactly what i said - many thanks for confirming what i said ajax and all who have helped.