Chipboard + Marmox What adhesive ?

[Tile Shop]

Hardie is not marketed as a way to brace a substrate,
just as an inert substrate replacement.
Having said that, experience tells us it will in fact add rigidity to a floor, when glued and screwed.
Just don't try that as an excuse if a substrate fails with Hardie installed.
That's not it's specified purpose.

See your point. "Brace" maybe not the correct term. But still the preferred method to most.

as @3_fall, it will add rigidity. But you still need to do your best to ensure the chipboard is adequately screwed down and isn't like a trampoline. screws at 300mm intervals down the joist, and if the joists are any more than 400mm apart, might be advisable to lift the chipboard and add a few extra noggins to screw it into.

Not an expert on screws to be honest, but I know there was a thread previously about what screws people preferred. "Turbo Gold" seems to ring a bell?

 

[Flintstone]

I wouldn't put marmox over chipboard. Just get the hardie and have no worries in the back of your mind and not have to use extra flexible adhesive, hardie glued and screwed with slow set or rapid set s1, same adhesive for tiles, jobs a good en.

 

[Old Mod]

Not an expert on screws to be honest, but I know there was a thread previously about what screws people preferred. "Turbo Gold" seems to ring a bell?

Indeed they are a favourite amongst forum members.

 

[V Man]

I wouldn't put marmox over chipboard. Just get the hardie and have no worries in the back of your mind and not have to use extra flexible adhesive, hardie glued and screwed with slow set or rapid set s1, same adhesive for tiles, jobs a good en.

Ok then ,hardie it is.+primer G & Keraflex S1 providing that I can use this adhesive on chipboard because Ive seen 2 Mapei manuals with 2 different instructions regarding "wooden conglomerates".Ill have to check up with Mapei on this one.
Just out of pure curiosity what is yours go to S1 adhesive for hardie floors ?

 

[Flintstone]

Always tilemaster for me.i don't think it's massively important about the adhesive to stick the hardie down, it's mainly to give it a flat bed and take up any voids, I think. I use nmp personally