Graeme wrote:

"The Natural Philosopher" wrote in message
...

Graeme wrote:


Hi

I'm going to level an old chipboard bathroom floor prior to fitting

vinyl

tiles. The existing floor is sound but quite uneven. My plan was to use

a

self-levelling compound then 6mm ply, followed by the tiles. Question:

I'm

pretty sure I need a compound that has some flexibility and one that

isn't

water based, but should I therefor get an acrylic one or a latex one?

And,

where from? Would 47264 from screwfix do the job?

I've already been advised that the best way to do this would be to

remove

the old floor and lay a new one. Not my cup of tea that!



Since you are plying on top I can't see it matters a hoot as long as the
levelling does not break up and crumble to dust.

All you are essentially doing is filling a gap between a smooth level
piece of ply and a naff old chipboard floor.

Tempted to say squirt some expanding foam on the floor and flop the
plywood down on top.

Or mount the plywood using whatever spacers are needed, having
pre-drilled it with holes big enough to get a foam nozzle in, and foam
it after screwing it down.

Sand off any mushrooms that erupt afterwards :-)

Hmm. I have to construct a custom shower tray. I think I have discovered
how to do it now...


I've never used expanding foam. How hard does it set? I imagine it to be
like polystyrene, but am probably totally wrong.


No, pretty much right, in that a stiletto heel sinks right in, but you
can and do lay concrete floors over the stuff - the secret is to spread
the load evenly, which the ply will do. Once the tiles are n it will
stiffen up even more.

If you have handled blue or pink high density foam, that's pretty much
what expanding foam sets like. Especially in confined spaces where it
can't bubble as much as it would like.