Floor prep....

[Mouldy]

What would you guys do with this before you tiled it? Joists are 5x2, boards are just over 1/2".

18mm ply pver the lot? Have to be carefull that I dont pierce pipework with screws!! :yikes: Unfortunatly theres a lot of it under there, including gas.......

Or would you lift the boards and screw 18mm directly to the joists?

 

[CJ CERAMICS]

looking at the picture.....with amount of loose boards and cut boards you would have to ensure that all boards are screwed down anyway before overboarding so i would remove them and replace them with 18mm wpb.
chris

 

[Mouldy]

Hence the question bud, the floor is in a hell of a mess, worst one I've come across to be honest.

 

[Gazzer]

Well if you were thinking of overboarding with 18mm then height cant be an issue. I would remove all boards, maybe alter pipework while I coould. Overboard with 22 or 25 mm ply then a 6mm tile backerboard. Jobs a goodun and will last many years.

 

[Mouldy]

Height isnt to much of an issue but obviously I cant go too mad. There was a lot in the room:-



and its all going back, allbeit in different places. Bath and shower positions are swapping and basin going over by rad. Floor has a bounce if I jump on it and Im no heavywieght, (12.5 stone).

Never been overly concerned before but this ones got me thinking a bit! Walls are all over the place, as was the ceiling.

Had to overboard the ceiling due to Artex not being adhered, dubbed out all the high spots and the two coats of multi:-


Right hand wall looked like this:-



:yikes:

Spent three days on the prep so far, two bags of bonding and two bags of multi!

 

[doug boardley]

I'd go,same as Sir Ramic, rip out the floor and replace with 22mm wbp and hardibacker

 

[Mouldy]

Oops, just thought I havent given the full picture....!

Wall with window and to the left of window are outside walls. To the right and immediatly to the left of the door are masonry partiotion walls that are, wait for it, (drum roll please....), sat on the bloody joists! No steel just good ole timber. :yikes:

 

[darragh]

just a thought but id be tempted to lift old boards, fix 18mm ply, then ditra matting

 

[White Room]

Spent three days on the prep so far, two bags of bonding and two bags of multi![/QUOTE]

Really:blush2:

 

[Mouldy]

that also includes the rip out and overboarding ceiling, not just four bags of gypsum! Also had to add timber in loft due to joist being in the wrong place and a lack of them.......

 

[Mouldy]

So tell me about this Ditra matting then. I know what it is but Ive never used it. I understand that its a de-coupling membrane but if its adhered to the substrate, how is this decoupled?

Floor joists are 4x2 not 5 as I first thought and there is deflection in the mid part of the floor when its stood on. Never had experience of dealing with a floor this bad!

 

[Mouldy]

Anyone?

Will 18mm ply and ditra remove the deflection issues?

 

[jay]

best to remove floorboards then nog and strengthen joists to remove deflection then use wp ply 22mm screwed down for a solid floor

 

[Mouldy]

Cant nog the entire floor due to amount of pipwork in the void mate

 

[jay]

you need to stop the deflection any pics