prime t&g redwood before hardiebacker?

[nick9one1]

I'm making progress with my ensuite wetroom, and I'm nearly at the point of tiling.
The form is 7-8mm above the floor, so I plan to bring up the level with 6mm hardiebacker.
I've read conflicting information on weather the t&g should be primed before I use tile adhesive to stick down the hardie. Can anyone clarify?

 

[Discothetiler]

cant hurt to prime it but i assume youll be glueing and screwing the hardie?

 

[Dave]

No need to prime. The adhesive is there to purely take up any undulations/cupping in the floor boards . Wipe floor over with sponge to remove dust etc.