Marmox boards

[sibs]

Hi all

Just taken delivery of some Marmox backer boards. I was really surprised by how light these boards are considering they take 62kg per sqm. They have foam middle and are mesh & cement on the outside.
Has anyone else worked with these? It doesn't seem possible that something so light can hold so much weight!

 

[DHTiling]

Hi all

Just taken delivery of some Marmox backer boards. I was really surprised by how light these boards are considering they take 62kg per sqm. They have foam middle and are mesh & cement on the outside.
Has anyone else worked with these? It doesn't seem possible that something so light can hold so much weight!

I have used the wedi which is basicly the same......yes they are light but they do the job....

 

[sibs]

Thanks Dave for the reassurance. I wasn't really questioning Marmox or anything but was just after exactly what you gave which is some reassurance so thanks
I was absolutely gobsmacked by their construction and how light they are

 

[DHTiling]

Wot thickness did you get tina..coz i think there is a minimum for walls...?

 

[DHTiling]

Here's some additional info tina....... Insulation Board Fixing Instructions - Marmox UK Ltd

 

[pjtiler]

i had a few probs last time i use them
we fix them on fastset as pre info
but the edges curled up so t had to screw the buggers down in the end

 

[sibs]

Hi dave I got 12 1/2 mm boards but they do bow slightly they're 600 by 2400.
Anyway I have a problem... half the room is studded which had lath & plaster and the other half is brickwork.
I want to screw the Marmox boards in horizontally on the stud side as to do it vertically would create too much waste.
The problem I have is when I stuck my straight edge across the studs a few were out of line. What I have been doing packing out any gaps between my straight edge and the studs with bits of wood but only where I am going to screw the marmox down.
Is this correct? If not how do I get the studs level both vertically and horizontally so that I don't end up with wavy walls?

 

[DHTiling]

Hi dave I got 12 1/2 mm boards but they do bow slightly they're 600 by 2400.
Anyway I have a problem... half the room is studded which had lath & plaster and the other half is brickwork.
I want to screw the Marmox boards in horizontally on the stud side as to do it vertically would create too much waste.
The problem I have is when I stuck my straight edge across the studs a few were out of line. What I have been doing packing out any gaps between my straight edge and the studs with bits of wood but only where I am going to screw the marmox down.
Is this correct? If not how do I get the studs level both vertically and horizontally so that I don't end up with wavy walls?

As long as you get them flat your method will be fine........sounds like a nice job....

 

[sibs]

Thanks a million dave can you screw things into these things with cavity wall fixings like you can plasterboard?

 

[grumpygrouter]

Thanks a million dave can you screw things into these things with cavity wall fixings like you can plasterboard?

Thats a really good question Tina. I await the reponse with interest.

 

[GazTech]

Thanks a million dave can you screw things into these things with cavity wall fixings like you can plasterboard?

If the boards are screwed to stud walls, any heavy objects that needed fixing, I would secure noggins in the appropriate position. If boards are fixed to solid substrate, then a plug can be inserted beyond the boards ....

 

[DHTiling]

Thanks a million dave can you screw things into these things with cavity wall fixings like you can plasterboard?

Yes tina ..Cavity type fixings is the way to go......if you know exactly where stuff is going you can fix before hand and then remove for tiling and just drill the screw head size in the tile....if fixing afterwards then you will need a hole big enough to get the cavity fixing through....

If you were to use normal plugs the stress of tightning of the screws could crack a tile because the plug will only grip the tile and not the marmox board if you see what i mean...so yes cavity fixings is the way to go...

 

[sibs]

Brill thanks once again guys nice one!