marmox onto ply - TilersForums.com

[judge]

Evening all,ive not worked with marmox before and was wandering what thickness it needs to be for overlaying on 18 mm ply upstairs floor ?:smilewinkgrin:

 

[Bubblecraft]

You can fit a minimum of 6mm but depends on how much you wish to insulate & height restrictions

 

[Gazzer]

I presume the existing floor is deflection free ?

 

[DHTiling]

Minimum 10mm onto timber IMO.

 

[Bubblecraft]

I would have said 10mm for floor boards but not for 18mm ply. Why minimum of 10mm Dave on ply?

 

[Gazzer]

I would have said 10mm for floor boards but not for 18mm ply. Why minimum of 10mm Dave on ply?

If its for UFH I always use 10mm minimum unless its cement backerboards.

 

[judge]

The reason i ask is ive allways used hardi backerboards for wooden substrates,but ive seen a pretty good deal on marmox boards.I need to order the 20mm curved board anyway so thought i would try them out as a cheaper alternative as long as the 6 mm board is fine for floors:smilewinkgrin:

 

[judge]

I got interupted in my last post by my tub of soup exploding in the microwave !!I opened the door and my "New York natcho chilli soup" flowed out:yikes: .I also wanted to ask if the marmox is a good substitute for the hardi superior in any way (regards to cost).Im a little dubious after dave saying 10mm minimum.

 

[Gazzer]

Better insulation IMO with Marmox but I know Hardi and No More Ply etc may argue that.

 

[Qwerty]

I always use the 10mm marmox boards over 18mm ply, but I cannot actually find anything on the marmox site which states a minimum thickness for the floor