Tiles loose

[Dave]

Harsh,but true.

it wasn't typed to be harsh .. Just stating what a tiler should be Looking/checking and advising etc.

 

[Just Rizzle]

sorry to say tiptop its all down to u . your the pro you should of asked questions rang the supplier of the screed talked to there tech people. y didnt u use a decoupling membrain standard practice for me to mat new screed. if the customer dosnt want to mat the job my decission is easy I DONT DO IT. i let some like u have a go youve obviously learnt a very expensive lesscon

 

[Stef]

I would disagree with the mat on the screed Ray, I've tiled a few anhydrite screeds & never had an issue as I use AnhyFix.
Each to their own spec though not faulting the way you do it.
I agree with everything else stated though, it's a harsh lesson for tip top.
Even sticking Ditra down wouldn't have helped in this instance as the laitance hasn't been removed..

 

[Simons70]

I still not understand how the tiles lose!Some pictures?

 

[Stef]

I still not understand how the tiles lose!Some pictures?

The adhesive is only stuck to the top friable layer of the screed, the laitance.
This had to be removed or the floor will fail just like this 100%.

 

[Just Rizzle]

laying any tiles on a un protected screed with under floor heating leaves you vunerable if the screed begins to crack under expansion and contraction even if using anhidro addy. think you have been lucky so far. if the floor cracks so do the tiles. been and seen so many insurance jobs were tiles have cracked on new screeds due to ignorance where the tilers have chanced it. makes me my money though love it. been using decoupling membrain for 10 yrs plus mainly ditra but have started using the bal membrain on certain screeds

 

[Andy Allen]

laying any tiles on a un protected screed with under floor heating leaves you vunerable if the screed begins to crack under expansion and contraction even if using anhidro addy. think you have been lucky so far. if the floor cracks so do the tiles. been and seen so many insurance jobs were tiles have cracked on new screeds due to ignorance where the tilers have chanced it. makes me my money though love it. been using decoupling membrain for 10 yrs plus mainly ditra but have started using the bal membrain on certain screeds

I wouldn't say every ufh job needs a mat...alot depends on the tiles the type of screed etc.
What is important is the ufh is commissioned before tiling and after tiling the temperature is built up slowly. .

 

[nybor62]

sorry to say tip top. but fixer error imo. one look at the screed you should have known what it was , and and applied the right fixing method , tough lesson learnt ,

i feel for ya , but the customer i feel for the most , needs sorting

 

[Dave]

I also uncouple every new screed , heated or not. ... You can call it overkill or not but it's the way I like to work .... Even anhydrite screeds crack , and yes believe me they do... A damn site lot less than a cement based screeds but I have seen a few with minor cracking ... So I play it safe all day long.


as for the OP... Sorry if some of the info sounds/reads as blunt but it is an expensive error made , hope you manage to sort it ok.

 

[Andy Allen]

Wouldn't be a problem if we all sang from the same hymn sheet.....if I priced to mat every new screed I would be undercut left right and centre. .

Anyway this is for another thread....oppolgise to the op..

 

[Just Rizzle]

it is true we all do things differently but i find that if you explain to the client the advantages of using a mat for his very expensive tiles and back it up with photographs as i do of tiles cracked because mats were not used believe me YOU WILL GET THE JOB, the others will look like cheap chancers dont put your self in tip tops shoes.if the client cant afford to mat it he cant afford me any way. good luck

 

[Ajax123]

Power flow screed.... Never heard of it...

 

[peteablard]

Surely this is the customers fault for trying to build his own house and not finding out the correct information ie the heating should have been turned on before and the drying time on the screed?

This is quite possibly one of the stupidest comments I've read on here. Customers rely on professional tradesmen to quote for a job and give them advise. These are basic questions that should have been covered when you first went to quote for the job. Do the right thing and put it right for them, 100% fixer error

 

[Diggy]

+1

Diggy

 

[mike1979]

Can't add anything to this thread except the first anhydrite floor I tiled on I wasn't sure so I asked Lafarge for info and they sent me a booklet and it tells you everything you need to know from drying time , sanding ,moisture ,sealing and types of suitable adhesive so the info is there