Wet/flowing screed over UFH - any recommendations?

[Steve_W]

Evening all,

Had several companies quote on supplying a wet UFH system for our renovation & extension. They all seem to suggest a "wet flowing" screed is best to pour over the ground floor pipes as it is quicker than barrowing in loads of traditional screed, is less likely to cause any problems (punctured pipe etc.) and is quicker to lay.

Has anyone got any recommendatiosn of flow/wet screed installers since that's the next quote/estimate I need to sort out?

We're near Reading if that helps.

Thanks,
Steve

[King Herald]

Was there any mention of how they plan to get the wet screed to the job site?

I'd assume they still have to carry it in, unless it is something like that instant concrete stuff where they just add water to the powder after it is in place.

[Steve_W]

I gather it's normal cement screed mix but wetter so it can be pumped in and flows to pretty much self level. Sounds easier than hand trowelling!

[albundy89]

Be very careful with wet flow screed systems as they are plaster based as opposed to cement based and although easier to lay cause a lot more problems.
This is from personal experience and being in the trade but that is just my experience.
No doubt you will get responses to the contrary but thats life,just ask around and make your own mind up.

[Steve_W]

Thanks Al - is that the anhydrite stuff that some screeders mention?

What goes wrong with it then - does it shrink, crack, flake off etc. after a while?

[Fleegle]

The more water used, the more likelehood of shrinkage