18mm cement board for bathroom flooring?

[gmartine]

Third time I'll be doing this floor...first time was weatherproof TnG, 2nd was marine ply both of which were varnished and blew up because of a combination of flooding and careless use. Hardibacker is easy to get from sheds but only in 12 & 6mm which I could overlay. Any other recommendations?

 

[ShaunCorbs]

Marmox board ?

 

[gmartine]

I'll look into it, can it be installed directly onto joists?

 

[Ben-gee]

If customers are as daft as they sound- treat it like a wet room.
18mm wbp then 10mm wedi/marmox/etc and tape all the joints.
Or 18mm ply and then membrane it with Impey waterguard.

 

[PETE 123]

I would be thinking of putting lino in.

 

[ShaunCorbs]

I'll look into it, can it be installed directly onto joists?

Don’t have a clue but you can make a seat out of it so has to be self supporting and able to span you may have to installing noggins every 450mm

 

[gmartine]

If customers are as daft as they sound- treat it like a wet room.
18mm wbp then 10mm wedi/marmox/etc and tape all the joints.
Or 18mm ply and then membrane it with Impey waterguard.

Yep, was thinking of basically tanking it.

 

[gmartine]

I would be thinking of putting lino in.

Yeah maybe, current flooring is large rubber tiles and would or should've been fairly well sealed with it's contact adhesive so not sure how it got through. Haven't investigated yet.