Won't Pay For Decoupling

[hmtiling]

I've priced and got 200m2 of trav on a pumped heated screed. The client agreed to decoupling but has just sent me an email saying it doesn't need it according to the screeding company! I don't want to lose the job but not prepared to do it without the membrane. Can anyone point me in the right direction of some literature to email him please? Thanks.

 

[Qwerty]

Use the online technical info pages of the manufacturer you were planning to use. I carry it in my van and/or forward them a link in my quotes/ estimates so it's there to see from the off

 

[hmtiling]

I'm pretty sure he's read the bumf from Dural. I could do with something impartial that states it's needed. Am i right in thinking decoulping with stone is British Standard?

 

[ttt tiling]

The floor will crack without decoupling . I give people the choice , tell him it will crack without ditra or probably wont with ditra , either way Travertine is well dodge on a heated floor that size

 

[Spud]

Get your customer to ring the stone federation, their guidelines is to use a membrane with stone over UHF I will see if I can find some literature

 

[hmtiling]

Many thanks

 

[Italy]

of sand cement screed heated, in Italy you do not use decoupling, it just keeps on expansion joints and perimeter doors, spacious expansion joints every 4/5 ml.norme UNI say this.
UK do not know the rules
the trav posed fugue or approached?
sorry for my english

 

[hmtiling]

I'll be using expansion joints too. The pumped screeds here crack a lot!
It's 600x600 honed and filled if that's what you're asking Antonio?
Your English is better than my Italian

 

[Italy]

I'll be using expansion joints too. The pumped screeds here crack a lot!
It's 600x600 honed and filled if that's what you're asking Antonio?
Your English is better than my Italian

is liquid screed?o normal cement sand?

 

[hmtiling]

Liquid. It's alpha hemihydrate to be precise

 

[Italy]

wondering if fissures wide or narrow
liquid or sand cement screed?

 

[Italy]

Liquid. It's alpha hemihydrate to be precise

you know the thickness of the screed?

 

[hmtiling]

Around 50mm. They usually are.

 

[Chalker]

Don't worry about it, or lose the job.
Put in writing that you are using brand x tile adhesive, that the floor is dry amd that a decoupling membrane was advised, but declined.
Get the, to sign this, do the job, get paid, wait for the cracks.

 

[Italy]

Around 50mm. They usually are.

problems
Sign a paper.
you are not liable for any cracks.
otherwise do not work