joist spacing ?
 

well sort of...

going to install a floating floor in the basement over the concrete
base, will be 2400*600*18 weiroc (SP (T&G chipboard)) on 50*25 batons.
just wondered what the spacing should be for the batons, 400 or 600
centres ?

thanks
LJ

"in2minds" wrote in message
...
well sort of...

going to install a floating floor in the basement over the concrete
base, will be 2400*600*18 weiroc (SP (T&G chipboard)) on 50*25 batons.
just wondered what the spacing should be for the batons, 400 or 600
centres ?

thanks
LJ

A floating floor over a good, dry and solid concrete or stone floor, is usually
made up of felt underlay and top layers of either interlocked chipboard or
laminate, or even both if more weight is required. Do you mean a sub-floor to
cover an old concrete or stone base, or is it actually a floating floor for
sound / noise deafening?

"in2minds" wrote in message
...
well sort of...

going to install a floating floor in the basement over the concrete
base, will be 2400*600*18 weiroc (SP (T&G chipboard)) on 50*25 batons.
just wondered what the spacing should be for the batons, 400 or 600
centres ?

Weiroc flexes even on 400mm centres. I'd recommend 300mm with regular cross
pieces or use marine ply instead.

A floating floor over a good, dry and solid concrete or stone floor,
is usually
made up of felt underlay and top layers of either interlocked
chipboard or
laminate, or even both if more weight is required. Do you mean a
sub-floor to
cover an old concrete or stone base, or is it actually a floating
floor for
sound / noise deafening?


it's over an uneven concrete floor, so the underlay method won't work,
that's why I'm gong to screw down batons to level it out and put the
weiroc on top. Also it's a play room so figured it's better to fall over
on chipboard than concrete, floor covering will be lino.

LJ

going to install a floating floor in the basement over the concrete
base, will be 2400*600*18 weiroc (SP (T&G chipboard)) on 50*25 batons.
just wondered what the spacing should be for the batons, 400 or 600
centres ?

I wouldn't use chipboard anywhere. It squeaks and disintegrates at the
slightest opportunity. I certainly wouldn't use it in a basement, due to
increased damp. Spend the extra and use plywood or pine (or even oak, if
you're feeling flush). Floors would be much better on a 400mm centre.

However, using battens means it is not a floating floor. A floating floor is
just glued together and held in place by gravity.

Christian.

However, using battens means it is not a floating floor. A floating floor is
just glued together and held in place by gravity.

And does wot it sez when the cellar gets "really" damp))

--
Tony Sayer

"in2minds" wrote in message
...

A floating floor over a good, dry and solid concrete or stone floor,
is usually
made up of felt underlay and top layers of either interlocked
chipboard or
laminate, or even both if more weight is required. Do you mean a
sub-floor to
cover an old concrete or stone base, or is it actually a floating
floor for
sound / noise deafening?


it's over an uneven concrete floor, so the underlay method won't work,
that's why I'm gong to screw down batons to level it out and put the
weiroc on top. Also it's a play room so figured it's better to fall over
on chipboard than concrete, floor covering will be lino.


So it's a sub floor. Right. A kids play room will have noise, so a good
floating floor might be the real answer here. :-) How uneven is the existing
floor? If it's only slightly rough, then you might actually be able to lay a
floating floor. Something like 18mm Plywood would really smooth out any large
pot holes and cracks, and buying it in big sheets, like 8'X4', isn't as
expensive as buying all those little bits of flooring grade chipboard.

A good carpet underlay across the old concrete, then Plywood on top, then a good
quality Lino, and you're done. On the other hand, a sub-floor means raising
batons off the existing floor to get it all really level. This means the batons
wobble around until the top boards are fixed to them. Solidly fixing the joists
to the existing floor doesn't allow for any movement in different temperatures
and could actually make the old floor break up even more under the strain. Even
your own house floors aren't fixed to anything at either of their ends for the
same reason.

But having said all that, I have found a site in .pdf format, so you'll need a
reader for it, which describes how a sub-floor should be laid over a concrete or
stone floor properly. And it's an Aussie site, but still good. :-) Here's the
link:

http://www.hyne.com.au/downloads/dih...rete_slabs.pdf

Good luck with it.