Tim Lamb wrote:
In message , The Natural Philosopher
writes
Tim Lamb wrote:
Having failed to pay proper attention during earlier discussions I
wonder if someone can kindly highlight the conclusions?
Early next week I hope to be laying polypipe under floor heating and
will shortly thereafter be badgered by my builder for a decision on
flooring so he can lay screed.
I doubt there is sufficient space to use battens or plywood and yet
match existing floor levels so gluing direct seems the obvious route.
This also reduces the *insulation* effect of the flooring.
Flooring seems to come in a huge range of thickness and a variety of
substrate materials to say nothing of the fixing options! Entrance,
hall and shower room are likely to be in 300 x 300mm ceramic tiles
which, having measured some existing, are about 13mm thick: including
I suppose minor variations can be taken care of at thresholds but is
sub-15mm engineered wood going to do the job?


Yes, but do NOT glue it. Lay floating.

Hmm... so it has to be a *click* version? What about the membrane they
seem to insist on?
You will curse without it. Clack,clack, clack...:-)

What happens to expansion/contraction with glued fixing?

It bubbles up/cracks the glue.

Oh! Right.

regards