Jakoboard thicknesses

[Steve Griffiths]

Advice please as I am starting a house refurb and working out the floor level for joists, as the bathroom is upstairs I am going to lay the floor in the style of a wetroom, sloping slightly to one corner.

What is the best makeup of the floor from the joists up, flooring grade chipbord overlaid with ply then Jakoboard or is that overkill and a 22mm ply and jakoboard adequate?

Also I see that Jakoboard is available from 6 to 50mm are different thicknesses required for the floor/walls?

 

[Time's Ran Out]

No!

 

[Blunt Tool]

Why not use the likes of
Knauf GIFAfloor | Gypsum Raised Flooring System - Knauf - https://www.knauf.co.uk/product-range-overview/flooring/knauf-gifafloor
Right onto joists level and install Wetroom tray that already has the required runs

 

[Waluigi]

I know these boards seem to be the latest recommendation on here but has anyone actually fitted them? I’ve not done a huge amount of research into them but they seem to come in 600mm x 1200mm sheets. Do you simply tile straight on top? Surely a crack membrane needs to go on.

 

[Waluigi]

Just read this about the GIFA floor:-

ideal for stone floors laid without the need for an additional de-bonding layer.

 

[Blunt Tool]

Just read this about the GIFA floor:-

ideal for stone floors laid without the need for an additional de-bonding layer.

The ones I have done used Mapei wp200 mat but that was because they were wetrooms

 

[Blunt Tool]

Think I would still lay a thin mat for stone even if it was a dry area, but porcelain straight on

 

[Waluigi]

I take it you glue the joints?

What about supporting joints at 90 degrees to the joists? It’s got to be incredibly strong. Would be a struggle to fit together if the joists are uneven.

I’d like to see this system demonstrated somewhere.

 

[Steve Griffiths]

Why not use the likes of
Knauf GIFAfloor | Gypsum Raised Flooring System - Knauf - https://www.knauf.co.uk/product-range-overview/flooring/knauf-gifafloor
Right onto joists level and install Wetroom tray that already has the required runs

Thanks for the link, main reason is it's what my local merchant stocks, they have a trade night coming up in a few weeks so I will have a chat to the CTD rep and pick his brains.

The reason I said wetroom style is that it will be a traditional bathroom, this is a failsafe to help prevent damage in the case of a tenant leaving a bath running or a burst pipe, it is not a wetroom in the traditional sense, hence not needing a tray etc

Most terraced houses have a downstairs bathroom and I normally incorporate the same into the screed with a very gentle fall.

 

[Steve Griffiths]

I'm getting these are not ommonly used by the number of responses?