Very thin screed

[thickbed]

Hi All

quoted a job today,looked like anhydrite although possibly a bit greyer(if that's a word) Customer said it was only 20mm thick and sure enough when you looked down the floor you can actually see the slight indentations of the polypipe u/h pipes which are 15mm. So 100mm celotex with polypipe stapled down and covered (just) with screed. My question - is there a liquid screed available that can be laid at 20mm? Been down for 3 weeks and m.c is 0.6 in most places


Advice much appreciated


Mike

 

[Just Rizzle]

screeds can be any thickness but 2omm is a very bit thin i personally would not touch this job with a barge pole as there is no strength in the floor screed at this depth . even with using a decoupling mat cant see the tiles not cracking at some time in the future.
has the customer tried to save money by using 1oomm celotex instead of 60mm cel and 60 mm screed?

 

[Stef]

I'm certain there is a minimum depth on top of the pipes & I think it's 26mm, don't quote me on that depth but it is round about that.
I remember Alan (Ajax) commenting on the same issue a long while back.

 

[Dave]

This should help ..

 

[Dave]

This is based on gypsol binder , so always check ....

 

[Sean SML Tiling]

The Schluter bekotek system you can simply latex over the pipes. Think that is minimum of 20 mm screed/latex. Will have to double check though.

 

[thickbed]

thanks for this guys still not spoken to the builder but customer informed me it is called flowscreed