Marmox plastic washers.

[judge]

Evening gang. Would there be an issue laying loose ufh cable over the top of plastic marmox washers i am glue n screwing to an upstairs chipboard floor.Or should i try and work the cable around them instead ?( The main reason i ask is the slight height difference itll make.) Obviously ill be self levelling afterwards before tiling.:smilewinkgrin:

 

[AliGage]

Why don't you use hardie instead?

 

[Qwerty]

No issues whatsoever going over them

 

[White Room]

I'd be using hardie to avoid going directly to chipboard....

 

[Qwerty]

I'd be using hardie to avoid going directly to chipboard....

I read it as he was gluing & screwing (Marmox) to the chipboard hence why using Marmox washers. I just assuming you meant that judge, not directly slc to chipboard?

 

[White Room]

I read it as he was gluing & screwing (Marmox) to the chipboard hence why using Marmox washers. I just assuming you meant that judge, not directly slc to chipboard?

You may be right Geoff I zeroed on the chipboard

 

[judge]

I was gonna glue n screw 6 mm insulation board ontop of the chipboard,tape the joints,lay the cable,then self level before tiling.I was just a little concerned about the slight height issue as the washers dont sit totally flush on the insulationboard when screwed down.(probablly worrying about nothing but wanted to check first):smilewinkgrin:

Ali-I allways overboard with Hardi but was only going with insulation board for the the thermal properties.

 

[White Room]

I prefer the metal washers, never used the plastic though....

 

[Rookery]

I use the metal ones too, no height issues then. Arent the plastic ones meant for hammer fixing into solid walls/floors?

 

[Qwerty]

I use the metal ones too, no height issues then. Arent the plastic ones meant for hammer fixing into solid walls/floors?

No mate. There are plastic washers that are identical to the metal ones, only difference is you can't screw down as much as metal ones as the screw just pulls through. I use them a lot still though. They do make plastic "spankers" for solid fixing.
Judge, by the time the screw is in nicely it will only be 1-2mm higher maximum

 

[AliGage]

Ali-I allways overboard with Hardi but was only going with insulation board for the the thermal properties.

I don't think there is much difference between the two mate 0.00something.
Over a timber floor though I would probably opt for hardie. Yes marmox is easier to handle, cut and fit. I've just done a bathroom with UFH, chipboard floor and went over with HBB and I'm starting another tomorrow where ill use the same.

Thats just how I roll! But if its marmox you intend to use and its loose wire youre fitting im sure you could work the wire round the washers. A little less depth on the SLC too.

 

[judge]

Thanks for the replies guys

 

[The D]

I don't think there is much difference between the two mate 0.00something.
Over a timber floor though I would probably opt for hardie. Yes marmox is easier to handle, cut and fit. I've just done a bathroom with UFH, chipboard floor and went over with HBB and I'm starting another tomorrow where ill use the same.

Thats just how I roll! But if its marmox you intend to use and its loose wire youre fitting im sure you could work the wire round the washers. A little less depth on the SLC too.

So Marmox is not a thermal board ??

 

[One Day]

HUGE difference between marmox/wedi/jacko etc and cement boards!
Why would anyone lay ufh on HB???

 

[One Day]

Infact -
Hardibacker 500 U value = 7.7
Marmox u value = 2.7

Big difference there.