Hardiebacker or no more ply?

[john56897452]

Hi,

Looking at tiling the floor of my bathroom. No UFH just plain tiling. Whats the preferred base?

Fixing onto solid floorboards (no squeak or bounce). Screwed down NMP or hardiebacker, or any other product suggestions?

Thank you for reading

John.

 

[Flintstone]

Either of those or a 6mm insulation board such as marmox, wedi, delta

 

[GoneGuy]

I normally go for no more ply as you can use mega strength glue and screws

 

[Ttt1601]

Either of those or a 6mm insulation board such as marmox, wedi, delta

Got told the other day than 6mm xps style board isn't suitable for timber overlay, 10mm minimum. Apparently

 

[Qwerty]

Got told the other day than 6mm xps style board isn't suitable for timber overlay, 10mm minimum. Apparently

Interesting. Who told you that? Pretty certain from memory that they all state it's a recommended method with 6mm. I have certainly never had any issues.

 

[TheAofT]

Got told the other day than 6mm xps style board isn't suitable for timber overlay, 10mm minimum. Apparently

Manufacturers say that 6mm insulated board isn't suitable for floorboards and suggest to use thicker board but not for ply or chipboard etc.

 

[Qwerty]

I can honestly say that I have never seen that written anywhere. I'm not saying it's not true, just not seen it!

 

[TheAofT]

They usually drop that info into technical support or information or some sections where they explain how to use products.

 

[TheAofT]

But you're right its not easy to find.

 

[Qwerty]

Well I found it at last, hidden in the depths of a Marmox PDF document!

Great info lads, this kind of thing is exactly what this forum is all about

 

[Ttt1601]

Yea I had never hated it either, I have to be honest I have always used 10mm on chipboard floors anyway, purely though belt and braces really, but a lad on another site mentioned it and a few other confirmed it. But yes @Plan Tec Tiling it is exactly why I love this place

 

[Blunt Tool]

I've done it with 6mm onto floorboards plenty of times, primed, flexi adhesive and mechanical fixed at 300mm centres because of the need to keep heights as low as possible and have never had any issues at all.

 

[Dumbo]

I always laugh at bathroom floor height build as everyone is worried about the step up when in fact most people have walked up a flight of 8" stairs to get to their bathroom .

 

[Flintstone]

Stairs are a bit different to a threshold! No one wants a toe stubber!

 

[Dumbo]

Stairs are a bit different to a threshold! No one wants a toe stubber!

As my mum used to say . Pick your feet up .

 

[Blunt Tool]

As my mum used to say . Pick your feet up .

And what about if customer is in a wheelchair? Can't have floors all different heights.

 

[Dumbo]

Then they wouldn't of walked up a flight of stairs would they .

 

[Blunt Tool]

We are speaking about thresholds you are the only one speaking about stairs

 

[WetSaw]

Then they wouldn't of walked up a flight of stairs would they .

...not if they're in a bungalow..

 

[Dumbo]

...not if they're in a bungalow..

You're right . But in a bungalow likelihood is it would be a solid construction floor so tiling direct to screed which would involve minimal height build up. In fact possibly less than a good quality carpet and underlay .