ive always tiled onto block walls, now i have a timber framed bathroom i have to retile, i have removed the old tiles and cement fibre board and now left with a timber frame.
do i replace with 6mm cement fibre board be ok? once i screw it all onto the timber frame and build the niche, do i need to tape and plaster the joins like you do on gyprock before you water proof the surfaces?? if so what type of plaster do you use?

