Fermacell vs backer board in bathroom

[Gone West]

2 minutes ago, Declan52 said:

What did you use to cut it?? Would a diamond tipped blade in a grinder do the job.

Do you have to use special screws with it that cut into it??

I used a circular saw with a TCT blade but it ruined it eventually and I pre-drilled and countersunk all the screw holes and used s/s screws.

[Onoff]

On thd Aquapanel I used normal Starrett hole saws for the circular bits. I used carbide grit jigsaw blades for the square cut out as recommend by @Nickfromwales:

 

https://www.toolstation.com/shop/Power+Tool+Accessories/d80/Sabre+%26+Jigsaw+Blades/sd2581/Tungsten+Carbide+Grit+Jigsaw+Blades/p67688

 

No need to countersink the Aquapanel as the screws themselves do it.

Edited February 14, 2018 by Onoff

[Declan52]

Do you have to use SS screws I would something like turbo gold screws do.

[divorcingjack]

Thanks for all the replies on this, very helpful, chaps. Spent an eye watering afternoon yesterday pricing up Aquapanel, Hardiebacker and Marmox boards. I assume 12.5mm is the thing to use? Some above I notice have done a mix of Aquapanel and MR plasterboard in less "at risk" areas. Is this reasonable, or should we really just do the whole lot in Aquapanel/hardie/marmox and then tank over everything? 

 

Cheers, 

dj 

 

PS: If anyone has seen any good deals on this stuff, I'd be most appreciative

 

[Gone West]

16 hours ago, Declan52 said:

Do you have to use SS screws I would something like turbo gold screws do.

Quite possibly, I just tend to over engineer things.

[Gone West]

16 hours ago, Onoff said:

On the Aquapanel I used normal Starrett hole saws for the circular bits.

I used Erbauer hole cutters for the pipe cut outs in the HardieBacker but they didn't last very long.

[MikeGrahamT21]

2 hours ago, divorcingjack said:

Thanks for all the replies on this, very helpful, chaps. Spent an eye watering afternoon yesterday pricing up Aquapanel, Hardiebacker and Marmox boards. I assume 12.5mm is the thing to use? Some above I notice have done a mix of Aquapanel and MR plasterboard in less "at risk" areas. Is this reasonable, or should we really just do the whole lot in Aquapanel/hardie/marmox and then tank over everything? 

 

Cheers, 

dj 

 

PS: If anyone has seen any good deals on this stuff, I'd be most appreciative

 

You can use any thickness of the marmox, dependant on how much insulation/VCL effect you want from the product, obviously the thicker it is the better, but all thicknesses are suitable for tile finish.

 

You don't need any tanking with Marmox, its ready to use once fixed, and is far less vapour open than the other products mentioned, which do let water vapour through despite being waterproof.