Wetroom: Do I lay UFH mat on Marmox preformed shower tray?

[JimboJet]

Hi folks, looking for some advice on my impending wetroom project.

Unless any of you can see any major flaws, the floor construction is 18mm WBP glued and screwed to joists+noggins, 6mm Marmox insulation boards 'glued' with rapidset cement for the majority of the floor area and a preformed Marmox wetroom shower tray which is likely to be 20mm but set level with the other flooring.

My main query is whether or not I should lay the heating mat into the shower tray area or not???

I suspect the answer is yes its fine to do so, but wanted confirmation before I start work. It does have some bearing on how I will construct the flooring to get the right levels.


Thanks in advance.

 

[dextrous]

Not sure I'd be happy having electricity underfoot during a shower, to be honest. I'd check on the electrics forum - they'd be more likely to know whether it's safe or even legal!

 

[JimboJet]

Hence asking the question... thank you for the reply it is part of my concern too. As there was no obvious choice in where to post I thought I'd try here as I suspect there will be some professional wetroom installers lurking around here somewhere!

The idea of electric UFH in a wetroom application to me is a good one as it accelerates evaporation of standing water reducing the chance of mildew/damp smells and the effects of "transferred" water to other areas of the building (as in wet feet/socks in later visits to the bathroom.)

If its not the done thing, how close can I go to the main "wet" showering area. I'm aware of IP zoning etc, but hard to distinguish the zones in an open wetroom scenario.

 

[bathstyle]

UFH in the wet dec area will be fine. Remember if it's the extruded foam marmox then minimum of 50mm x 50mm mosaic tiles required to avoid point loading.