New Build UFH Tiling

[John Wingfield]

Hi all

First post on here as need some advice. We are building a house and have got to the point where the floors need tiling.

The floor is a sand and cement screed that was NOT poured. It has been in the house since August.
The screed contains water based UFH which has not yet been turned on / commissioned.

I am going to be doing the tiling - done plenty before in previous houses, but never onto a screed with UFH. The chap in charge of the build has stated that we need to use a decoupling membrane on the screed to stop the tiles cracking.

I dont believe this is required, as the screed has had plenty of time to dry out (5 months) and I will have expansion joints between each room between the doorways.

Just after others experience / advice on this topic?

Thanks
John

 

[John Wingfield]

Im not using a tiler, Im doing it myself. Ive done a fair amount of tiling in previous projects over the last 3-4 years, but never on UFH screed, so I wanted to do my homework and hence seek advice from the forum.

Thanks for all the thoughts. Im not using stone, just porcelain tiles,

I will ensure the heating is properly commissioned before laying the floor and will be purchasing a matting, now that I have the facts.

 

[Diggy]

Commisioning is very important , as on the first heat up of the ufh , you not only get lateral movement but also vertical - deflection .
1. The worst of the vertical happens on the intial heat up.
and
2. Ditra or any other decoupling mat for that matter don't really allow for vertical movement only lateral ( if memory serves me correctly). So if you just put down a mat without the commisioning you could still get probs later.

Diggy

 

[widler]

Honestly i wouldnt bother with matting , ive laid loads of porcalain on ufh with no matting with zero failures,stone, use matting , porcalain use matting waste £1300
I will prob get some stick on here for this, but its not needed imo

 

[Flintstone]

Honestly i wouldnt bother with matting , ive laid loads of porcalain on ufh with no matting with zero failures,stone, use matting , porcalain use matting waste £1300
I will prob get some stick on here for this, but its not needed imo

I am of the same opinion.

 

[Dumbo]

I wouldn't be so sure you can't claim back vat on labour provided any contractors u used are vat registered . I'm sure the ground workers would of been . Probably be wise to talk to some friends and have a meeting with a sharp accountant . Not just a friends mate who is an accountant but a good one . You could be looking at getting a lot of money back . Ditra will seem like a drop in the ocean

 

[J Sid]

Materials only.

 

[John Wingfield]

Im now potentially thinking this job is now a little large for myself, in terms of the flooring etc. There is approx 180SQM to cover, in what region would I be expecting quotes considering all materials have been bought?

 

[hmtiling]

Can't discuss prices in the open forum I'm afraid John but if you post the work in the job forum people can private message you quotes.

 

[John Wingfield]

Sorry, have posted in job section now

 

[Dan]

Don't mind me while I bump up some older but good threads. If you can contribute to the thread, go ahead. But if it's nothing for you then don't reply and it'll soon drop off the What's New page etc.
Worth linking to our new forum structure while I'm doing stuff:-

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