Small Strip of Hardie Backer on Floorboards - TilersForums.com

[Mirjam]

Hello.
I have to screw down Hardie Backer board on existing floorboards (with adhesive) for tiling first floor bathroom and toilet.
The Hardie Backer is 800mm wide, the toilet is 830mm. Is it OK to have a 20mm strip of Hardie Backer on one side? I could not screw it down then. Or should I rather make a joint in the middle of the room, but all can be screwed down?

Thanks!!

 

[Sean Kelly]

I always keep off cuts of Hardiebacker for that very reason Mirjam. Yes, you can have a 20mm strip on one side. However, I would not buy a new piece of Hardie just to cover a 20mm gap down the side. If you have a 20mm strip as an off cut then use it. I don't know how long your toilet is, but remember to stagger any joints (like brickwork).

 

[Mirjam]

Thanks Sean!!!

 

[AliGage]

Turn the boards 90° and stagger joints?

 

[jollyroger]

I would NEVER fit a 20mm or 30mm strip of Hardi board, my advice is don't try and put all the boards in the way you describe. I would start by cutting a 3rd off a board and fit the larger piece. you will need to cut ALL the boards and remember to stagger the joints.
I suspect you might be trying to avoid cutting them but you will get a more professional job by doing so.

 

[jollyroger]

My own preference for cutting Hardi is to score 3 or 4 times on both sides with a stanley knife and snap........Gives you a lovely neat cut but you will go through a shed load of blades.

 

[AliGage]

Angle grinder!

 

[charlie1]

Don't use grinder! Creating dust with this stuff should be avoided lads! Score with stanley, place straight edge along cut then snap board by pulling it towards (yes) towards you. Make holes for pipes by scribing with knife then hammer it out. Any dust you do manage to create should not be dry swept.

 

[White Room]

I wonder if this the new asbestos, heaven forbid

 

[AliGage]

Well until henry gives up on me and the world stops producing dust masks then ill stick with the quick and extremely easy grinder option