small rock ok floor tile??

[G1zm0]

hi after starting to tile my bathroom it turned in to more than 1 job, the floor around bath,sink and toilet pan were swollen.

the floor is chipboard,the rest of floor looked ok, so i removed these parts and replaced them with same chipboard.

i lay down my plywood(6mm) and screwed it down at every 200mm distance (boy thats a lot of screws).
ive took door of and when dry laying the tiles , just at corner where door is theres a slight rock,( from top right to bottom left), its about a 2-3 mm ( i can fit a plastic school ruler under it) and its only at 1 corner.

i checked the floor and its where the floor comes in under the wall and joins to the hall floorboard (chipboard t&g)

and to lift al that is a major job. will the adhesive correct the rock if i use a little more or will the recomended spread be ok. the tiles are ceramic and the adhesive is Bal Rapidset Flexible... any advice welcome..



(update) i drylayed a few tiles and without cutting them to shape, they also have a small rock in them, just a few tiles, is this a normal characatristic of dry laying tiles and easy overcome, man if tilers have to pull up floor all times i dont envy yous

 

[DHTiling]

6mm ply is no good to tile too.... and your choice of adhesive has no guarentee on that substrate..

What made you use 6mm ply..?

 

[G1zm0]

hi , the adhesive was recomended by topps tiles , i used 6mm as i read alot of places it would be ok to use,and wouldnt bump the floor up too much.what grade ply should i go for? 9? i also have evostick floor tile adhesive grout aswell ,

 

[DHTiling]

If you want to keep the 6mm height th en use 6mm hardi backer....the thing is with 6mm ply is that it isn't stable enough with moisture and can even buckle with the water from the adhesive, for what good it is you might as well just not use it...

Sorry to say this but deffo no good to use....do some searches on here and see other replies..

 

[Gazzer]

hi , the adhesive was recomended by topps tiles , i used 6mm as i read alot of places it would be ok to use,and wouldnt bump the floor up too much.what grade ply should i go for? 9? i also have evostick floor tile adhesive grout aswell ,

Where have you read that ?

 

[G1zm0]

hi thanx for advice, i will lift the ply, what mm should i use, whats the minimum?. so should i take the bal back to shop and get another kind?

ive searched that much forums and it sayeed it on one of them, something diy i think and the tiler from b&q sayed 6mm is ok .

i wil need to get the new bits cut to size so it can fit in my ford focus, so far i have 3 pieces down, easyer for the tricky cut outs and the amount room ..

 

[Gazzer]

BS is 15mm but you may struggle to find it so 18mm is readily available. Make sure its WBP Ply and not construction/shuttering ply.
Adhesive is fine.

 

[david campbell]

would use 15mm ply also but as you say height is an issue then i would opt for 6mm hardiebacker,there is not much difference in price with the ply

 

[G1zm0]

i see topps do the hardy board, will the 6mm hardy 250 be ok to lay(£12.50) instead of the ply(dump the ply ive got ) or should i go for the 12mm hardy 500 at just £1 dearer.

is it easy to work with and cut?

 

[Gazzer]

i see topps do the hardy board, will the 6mm hardy 250 be ok to lay(£12.50) instead of the ply(dump the ply ive got ) or should i go for the 12mm hardy 500 at just £1 dearer.

is it easy to work with and cut?

If your sub floor is sound then 6mm Hardi will be fine. If the floor has any bounce then Ply will add more strength than Hardi backer boards. Remember to secure your sub floor to the joists first too add strength.

Cutting of hardi in straight lines is no problem with their scriber but cuttting around shapes are tricky. I use an angle grinder myself or a rotozip.