Part heated floor needs careful thought?

[Nigel Jones]

I have a 23sq m kitchen floor extension to do in 600 sq porcelain. Whole floor is new screed on block n beam. However only new half has wet ufh. Recommendations for Ditra mat over the whole area and movement joint where the heating joins? Skirting is going on top so good perimeter expansion on 3 sides. 4 th side is up to full width glass doors. Combined wisdom appreciated. 🧐

 

[Old Mod]

Sounds like you already have a decent plan in place, and expansion between old and new a must, especially with only one side heated.
A cold joint would suffice, but make sure you split the Ditra on this line too.

 

[J Sid]

Communication ufh first.
Uncoupling membrane over everything and movement joints as you say between ufh and cold floor.
Movement joint between tiles and glass doors, as you say gap under skirting and space skirting 2mm off floor and silicon round when painted

 

[Old Mod]

Communication ufh first.

Only thing I’d add Julian is that I probably wouldn’t bother trying to talk to my heating system, however, I know there’s a few plumbing ‘whisperers’ about, well so I’m told. 🤣🤣

 

[Nigel Jones]

Great wisdom. Thank you.
Is a cold joint a Silicon filled grout line?
What size perimeter gap is a minimum?
Julian - what’s “.communication” all about? 🤔

 

[LM]

Great wisdom. Thank you.
Is a cold joint a Silicon filled grout line?
What size perimeter gap is a minimum?
Julian - what’s “.communication” all about? 🤔

He means commission the ufh.

 

[J Sid]

Sorry spell check, commission the ufh
8mm under the skirting and free of adhesive. Cold joint as you say, silicon joint in a colour match to your chosen grout

 

[Nigel Jones]

Excellent. Now I have the full campaign plan. Thank you everyone.

 

[Dan]

Hi @Nigel Jones - Are you DIYing this job or getting a tiler in?

 

[Old Mod]

@Dan

 

[Dan]

@Dan

View attachment 110542

Ta mate.

You wouldn't think I manually configured the option for people to say what type of member they are, would you? lol