Deflection issue with No More Ply down

[Kevbos]

Lol contraversial kev

They said they were not going to rip up the original 6mm .ply .I was trying to solve it from there

 

[Andy Allen]

Depending how much your floor is bouncing.....and less face it non of us has seen it so can't really give an opinion on that.....however you say you have had a tiler round to have a look . So all I can say is using bal single part fast flex and bal wide joint grout with GT1 add mix would certainly allow for some movement and as your using a porcelain floor tiles and not some cheap bct rubbish then you might get away with it ....just remember to use a solid bed..minimum 10 mm trowel and back skim the tile.......

 

[Stef]

So I really have three options: 1) The correct way - rip up the NPM which will probably also destroy the floorboards. Fix/strengthen the joists so no deflection and lay 12/18mm ply floor, overboard with NPM or Hardiebacker. Tile. Expensive, disruptive and will make me cry.
2) The risky adhesive option - bearing in mind that the deflection is minimal a very flexible adhesive might resolve the problem. Only time will tell. 2 or 3 tiles would be affected. One commenter suggests he doesn't think i have a deflection problem in such a small room.
3) The raised floor option - Ply or hardiebacker. Adds 2 cm to the height of the floor. Will it definitely stop bounce after all that effort?

I hope the answer comes to me in the morning...night all. Thanks for weighing in.

Do you have a self levelling laser?
If you do then sit it in the middle of the room & mark it on the wall, stand beside it & get someone to mark the wall again & that will show you exactly how much movement you have in your floor.
I think you may be over thinking this floor too much as you always do get slight movement in a floor, it's trying to assess how much movement you do have, it's all well & good us sitting here trying to offer advise but we can't see the floor so it's a bit of a guessing game.

 

[Dan]

Depending how much your floor is bouncing.....and less face it non of us has seen it so can't really give an opinion on that.....however you say you have had a tiler round to have a look . So all I can say is using bal single part fast flex and bal wide joint grout with GT1 add mix would certainly allow for some movement and as your using a porcelain floor tiles and not some cheap bct rubbish then you might get away with it ....just remember to use a solid bed..minimum 10 mm trowel and back skim the tile.......

You won't need to back skim with fast flex I don't think. Unless things have changed as I think it's one part now isn't it?

 

[Andy Allen]

You won't need to back skim with fast flex I don't think. Unless things have changed as I think it's one part now isn't it?

It is one part now Dan but as with all porcelain tiles back skim to achieve a strong bond.

 

[Dan]

Ahh okay. Thought it was squishy enough. Used to need the fast flex trowel with ribs on the end to ensure a flat bed before even sticking to it.

Do you still need that expensive trowel you only used once in a blue moon?

 

[Andy Allen]

Ahh okay. Thought it was squishy enough. Used to need the fast flex trowel with ribs on the end to ensure a flat bed before even sticking to it.

Do you still need that expensive trowel you only used once in a blue moon?

Not really....I use fast flex a lot on wooden substrate. I just use 10mm notch trowel and back skim the tile. as long as you achieve full coverage that's the main issue.

 

[Dan]

Could you still tile your curtains with it if you wanted to now it's single part? I used to need to throw away my work trousers every bloody time it went near it let alone used it lol

 

[Andy Allen]

Could you still tile your curtains with it if you wanted to now it's single part? I used to need to throw away my work trousers every bloody time it went near it let alone used

Not as bad.....but still gets everwhere and a nightmare to remove....gloves are a must.

 

[Flintstone]

The stuff is horrible to use, I haven't needed it for ages than god.

 

[Deleted member 46792]

Video of deflection.

 

[Andy Allen]

Don't look like you have enough screws in it..

 

[widler]

To be honest all I can think about is you, stood there naked with your penis bouncing up and down and you laughing your head off 🙁

 

[widler]

Ps I'm happily married

 

[widler]

Erm, to a woman 😉