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I am currently redoing a bathroom. Floor is to be tiled with porcelain tiles.
The floor is 22mm wooden T & G floorboards. There are a fair amount of boards that have been previously taken up, presumably for access for electrics maintenance/ changes, etc.. Some of these boards have been badly cut for access and also had their tongues removed (I'm sure there's a joke in there somewhere). Some of the boards are also damaged or split. I can make these boards good by either reinforcing them underneath, by way of noggins between joists/ additional supports screwed to adjoining floorboards or replacing them with plywood completely.
If I repair/ replace as suggested, can I then overboard with 6mm tile backer board (Hardie, marmox, or equivalent) and then tile over? Or should I overboard first with 18mm WBP plywood, then 6mm tilebacker board, then tile, for additional structural strength.
Another option is to remove all the floorboards and replace with ply but this would be a bigger job as the floorboards span rooms outside the bathroom and the breeze block walls also sit above them. Not only this but 75% of the floorboards are in good condition.
I would appreciate your thoughts and recommendations.
Many thanks,
Daz
The floor is 22mm wooden T & G floorboards. There are a fair amount of boards that have been previously taken up, presumably for access for electrics maintenance/ changes, etc.. Some of these boards have been badly cut for access and also had their tongues removed (I'm sure there's a joke in there somewhere). Some of the boards are also damaged or split. I can make these boards good by either reinforcing them underneath, by way of noggins between joists/ additional supports screwed to adjoining floorboards or replacing them with plywood completely.
If I repair/ replace as suggested, can I then overboard with 6mm tile backer board (Hardie, marmox, or equivalent) and then tile over? Or should I overboard first with 18mm WBP plywood, then 6mm tilebacker board, then tile, for additional structural strength.
Another option is to remove all the floorboards and replace with ply but this would be a bigger job as the floorboards span rooms outside the bathroom and the breeze block walls also sit above them. Not only this but 75% of the floorboards are in good condition.
I would appreciate your thoughts and recommendations.
Many thanks,
Daz