22mm tile board availability?

[Gez]

Hi, I'm a DIY'er having stripped my bathroom back to joists and nearly ready to lay the floor.
My preference was to use 22mm NoMorePly or GIFAfloor boards direct to the joists and then tile direct to the boards, but I understand NMP is no longer available in UK? I've seen references to GIFAfloor but I cannot identify a stockist.
Does anyone have suggestions for sourcing 22mm board?
Alternatively my backup plan would be to lay 18mm WBP ply, using the largest size I can to reduce joins, with 6mm HardiBacker used as per their on-line video, then tile.
Lastly, the tiles will be 600x300 porcelain tiles, covering max 6m2. What adhesive and grout would you recommend?

 

[Andy Rhodes]

You could use 18 mm marine plywood cutting it to suit your floor joist then cover with a backer board other than hardiebacker something like delta or jacko board all depends on what is available to you where you live.Has for your adhesive choice a flexible adhesive is the best option either a fast setting one or standard one this depends on how quick you can lay the floor tiles once you've mixed your adhesive,& your grout should be flexible also

 

[J Sid]

do you know how much "marine ply" is?

 

[Andy Rhodes]

You can't put a price on quality

 

[Boggs]

These 22mm backer boards are always recommended but are not readily available.

Add trimmers at 300mm centres and lay 18 or 22mm moisture resistant chipboard.
Over lay with either 6mm Hardie or 10mm Delta boards or similar glued and screwed and tile over.

 

[J Sid]

You can't put a price on quality

yes if what your proposing is ove speced

 

[Stu Lilley]

22mm NMP is not a issue ???? We order it all the time

 

[Wayne Brown]

As above 22mm No more ply is a tongue and grooved tile backer cement board . Kop

 

[hmtiling]

Think op got confused with 22mm hardie which they no longer ship here

 

[Boggs]

Personally I prefer Hardie to NMP.

I find it too brittle and having to countersink the edges when screwing it down to stop the edges splitting is just an added hassle.

 

[hmtiling]

Personally I prefer Hardie to NMP.

I find it too brittle and having to countersink the edges when screwing it down to stop the edges splitting is just an added hassle.

The 12 and 22mm aren't as brittle as the 6mm. Very similar to hardie

 

[Bopster]

Things to consider is cost vs overboarding and also time. Taking up the whole existing floor to replace with 22mm NMP will cost more than over boarding with 6mm hardie.
Overboarding will increase the height slightly more obviously but this isn’t usually a big issue

 

[Wayne Brown]

Ops room is 6m 2 so not a huge room . Kop

 

[Gez]

Thanks for the steer to Tiling Supplies Direct.
I'll be placing an order!

 

[Tile Fix Direct]

There is a lot to be said for using Magnesium Suphite boards such as Orby Hard Eco. Manufacturing produces very little in the way of CO2 emissions, unlike cement-particle and gypsum boards which both generate high levels of CO2. Otherwise they have the same characteristics.
Orbry Hard Eco Backer Board - https://www.tilefixdirect.com/product/Orbry-Hard-Eco-Backer-Board