Underfloor heating between joists

[Dumbo]

I just noticed its from a trainee

 

[Simon Dale]

Anti fracture to help with a buckling floor . It just shows these guys dont know what they are on about and just make it up as the go along

He is only a Trainee 😱😱😱

 

[Simon Dale]

I just noticed its from a trainee

Ill follow his guidelines ,when it fails he will get the sack 😉😉

 

[Neillybeg]

We have laid 18 mm Giffa. It had movement so was screwed to sim of the joists
Tiler recommended Ditromat 5mm. That's laid now with 10mm porcelain tiles on top and it's solid. Time will tell if we get grout problems