I'm laying vinyl (probably Karndean) over my UFH. I will have a weak screed mix between the joists and will be screwing 18mm ply to the joists. I will then get an approved floor layer in to fix the vinyl.
My concern is with the ply. At what centres should it be screwed and is there a danger...
The detail from the UFH company states that the screed mix is to be 8:1. It is "!pug" or "biscuit" mix between and flush with the joists. It is not structural.
I am having underfloor heating installed. It's between joists in a weak screed mix.
I want to fix tiles in the kitchen area and engineered wood in the dining area.
Should I fix ply (what thickness?) to the kitchen and tile over. Should the ply be glued or screwed to the joists?
With...