T&G floring direct to concrete, parky direct to concrete.

[soundman]

I know this has sort of been covered before to some extent, but any way here we go again.

At some time in the future Im considering laying some timber floor.
If it is to be so, it will have to go direct on the slab..... seriously no other option, direct on the slab.

Ive looked at this a number of ways
the easiest would be to just lay the T&G direct on the slab with some sort of "wonder adhesive".... I can see problems.... but any way.

one way would be to go direct with some sort of adhesive and restrain the edges with some sort of hard fixed border locked with a T&G

one other option I recently considered was to lay it like parky but in relativly large bits.... saw a hering bone floor similar recently.

no matter what I would expect expension would have to be accounted for.
so gaps or cork strips.

then thre is the fiddly bits like interfacing between adjacent "other" floor coverings.

Thaughts and experiences please.
No I cant lay ply or timber studs under it.... just wont happen.

cheers

[lpg_falcon]

Did my floor with bearers.

Only 19mm thick.

It allowed me to Secret nail the tongue and groove to the bearers to hide the nails.

I did seal the concrete first.
I dynabolted and glued the bearers to the concrete
I secret nailed and glued the tongue and groove to the bearers.
I have a small step down into the wet areas.(38mm)
I have no step at the sliding doors, Worked out just below the door frame.
I had to move the vertical blinds on the sliding doors up the wall 38mm rather than shorten the blinds.
I also replaced all the skirting board with thicker (19mm) so as to hide the 10mm expansion joints around the walls.

I can recommend using the bearers.

Do you mind saying why not using bearers?

Maybe I can swing you around to my way of thinking with some discussion.

lpg_falcon.

[glock40sw]

G'day Soundie.

Direct stick no worries.
Use 12mm or 14mm overlay T&G.
We do 12mm and E.Maculata (Bruce) does 14mm.

Bostik Ultraset adhesive.
Ensure the slab is level. If not use a leveling compound.

Go to www.timber.org.au and download the fooring fact sheets that will give you more info than You will get here.

Larry and Dusty can give you more hands on experience with direct stick than I can.

[soundman]

thanks trevor, I'll have alook at the link.

Whats the diff between standard t&g and overlay flooring?
Is it just thinner?

the reason I wont be laying an underboard or beraers is that there are existing floorings, multiple and " we wont be having a big step" in the flooring.

10 to 15mm I can probaly get away with.
but 20mm forget it..... it wont pass inspection.

with direct stick whats the expectations on provision for expansion?

cheers

[lpg_falcon]

Fair enough with the step up or down.

Our step up or down is in the Wet areas and garage.

We may at a later date retile the wet areas.

As our steps are in doorways it isn't too much of a problem I guess.

lpg_falcon.