Hardiebacker - 6mm or 12mm?

[Mossop]

I was wondering how to choose between the 6mm and the 12mm thickness of hardiebacker cement board? There's no particular difference in the price.

6mm
HardieBacker 6mm Cement Backerboard For Tile & Stone (L)1200mm (W)800mm (T)6mm | Departments | DIY at B&Q - http://www.diy.com/departments/hardiebacker-6mm-cement-backerboard-for-tile-stone-l1200mm-w800mm-t6mm/150528_BQ.prd

12mm
HardieBacker 12mm Cement Backerboard For Tile & Stone (L)1200mm (W)800mm (T)12mm | Departments | DIY at B&Q - http://www.diy.com/departments/hardiebacker-12mm-cement-backerboard-for-tile-stone-l1200mm-w800mm-t12mm/136777_BQ.prd

 

[WetSaw]

It depends on what situation you're using it in.

 

[Mossop]

It depends on what situation you're using it in.

On a bathroom wall directly beside a bath which has an overhead shower. Timber studs. Tiles are the mini metro 7.5cm x 15cm tiles.

I presumed the weight of the 12mm thick board would be twice the weight of the 6mm board since both have the same dimensions. However, according to the B&Q links above, the 6mm board is 9kg whereas the 12mm board is 13.8kg.

 

[J K Tiling Cornwall]

I use alot of the 6mm backer board for overboarding floors but very rarely use the 12mm (just alot more hard work to cut and fix). Guessing you are matching the thickness of surrounding plasterboard? Aquapanel is lighter, easier to cut and fix and a similar price. (Im not a aquapanel salesman btw )

 

[Mossop]

Guessing you are matching the thickness of surrounding plasterboard?

No, it's not being matched to any surrounding plasterboard, the wall has been completely stripped back to the stud.

 

[Andy Allen]

I would use 12mm

 

[jobdone]

12 mm but I would use jacko/ we do etc easier to cut and water proof