Using two layers of Marmox Boards

[lylemes]

Hi,
Flooring a wetroom and planning to use 20mm Marmox ray and boards but I don't have enough room under existing floor for shower waste and pipe so was thinking of layering floor first with 50mm Marmox boards then laying down the Marmox 20mm tray and 20mm boards on top of the 50mm boards. Will this be OK or is their another solution I should be using.

Thanks
Lyle

 

[DHTiling]

If you use the Tuffdec2 tray it has a very shallow drain.. around 65mm or so.... and a lot easier to fit than Marmox IMO..

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[lylemes]

Thanks for that Dave, good advice. Would you recommend other types of board other than Marmox ?