tiling on floorboards

[cooper]

hi guys,just completed tiling my walls in the bathroom and now going ti tile my bathroom floor which are floorboards,i am thinking of using backerboards 6mm is this good enough?
the tiles are porcalien

[doug boardley]

what type of floorboards are they? tongue and groove planks or chipboard?

[jay]

any bounce in the existing floor

[cooper]

touge and groove

[cooper]

there are a couple boards that are damaged

[cooper]

tonge and groove

[doug boardley]

I'd remove them and replace with 22mm wbp plywood and then use hardiebacker over the ply, adding extra noggins between the joists to eliminate deflection (bounce)

[cooper]

so just putting backerboards over them is no good?

[doug boardley]

not recommended mate, unless you can be absolutely sure that there'll be definitely no movement

[the.tiler]

Make sure joints are staggered between the two layers and they would need to be at least 26mm thick overall

[kilty55]

hi cooper,if your floorboards are solid i.e. fix the damaged ones and check there is no movement then i would be happy to use 6mm cement boards

is there movement in the floor at present

[cooper]

no movement in the floor, as i said just a couple of damaged boards and also whats the best addy to use

[whitebeam]

A single part flexible to stick 6mm hardie down with screws, I use 25mm turbo gold from screwfix.

[doug boardley]

have you any pics of the floorboards?

[kilty55]

no movement in the floor, as i said just a couple of damaged boards and also whats the best addy to use

as you said then cooper just a few damaged boards,cement boards would be my route a grey spf for the boards

[cooper]

whats the best single part addy

[cooper]

cement boards such as aqua panel?

[Phil Hobson]

Aqua panel is one Hardie backer, no more ply, Glued and screwed, but only if zero deflection in sub floor.