Hi all,
Just removed my old floor tiles due to some coming loose, can I re-lay these again?
I've tried removing the old adhesive but its a no go its well stuck on (it easily gave up coming away from the ply tho!),so this would have to stay on.

cheers

No i would not advise it, would cost you more time and money trying to get it off the tiles. just get a scraper or carefully hammer away at it with a bolster taking care not to go near the existing/surrounding tiles and remove the adhesive off the floor and lay some new tiles on a decent surface.

Regards
Nick

Oh sorry missed the ply bit!!! i reckon a good scraper would do the job!!

The old tiles have come loose for a reason.....

wrong adhesive or wrong ply and prep work.....can you tell us how thick the ply is and what it is down on..?..

i reckon the ply may have not been fixed down properly or the joists are sagging, are they all loose in one area?

total brain **** youve lifted all your floor tiles, take up the existing ply and replace with 6mm marine ply while its up make sure all the boards joists etc are solid no bounce in the floor. once the ply is down pva it and its ready for tiles. do you agree dave?

6mm ply and pva......hope you are joking...?...

looks like ive been wrongly informed aswell then dave, quote " once this is done fix down 6mm thick sheets of marine plyboard all over the floorboards using panel pins to secure at every 150mm, then unibond the floor and allow to dry then fix the tiles using a flexible adhesive" this is from someone who has been in the game for 20 odd years and ha a good rep!! have i been taught wrongly then!?

been new to the game i dont want to use this method if its wrong!!!!

If you are going to use a single part flexible adhesive then you will need to use 15mm min ply(wbp) and prime the back and edges of the ply with a synthetic bonding agent..SBR..

Then you need to screw the ply down every 300mm .....just cause you were told your method by a 20odd yr fixer doesn't say it is right....

You can use thinner ply if you use a 2 part elastomeric adhesive...but the sub-floor needs to be virtually deflection free.....

Check your BS standard 5385 for clarification..

p.s using panel pins/nails will not hold the ply down for thermal expansion reasons..

thanks for that dave, ive noted that for future reference and ill have a look at british standards very helpful thanks

No probs....remember just coz a fixer has been in the game loads of years it doesn't mean they do things right......

Understood, ive got a lot to learn!!! maybe this advice should not be dished out where i did my course

You got that advice from a course...

yep its in front of me in black and white
title: tiling on wood floors

Its is advised not to tile direct onto floorboards, if your area is floorboard then make sure that all the floorboards are fixed securely (screwed down preferably) making sure that there is hardly any movement from the floorboards. once this is done fix down a sheet of 6mm thick marine plyboard all over the floorboards using panel pins to secure at every 150mm, then unibond the floor and allow to dry then fix the tiles using a flexible adhesive.

its a very reputable training provider in kent!! no names

i learnt a lot there but sounds like some things may have been a bit misleading!!?

Thanks for the help,

The floor is chipboard with 6mm ply, as for the adhesive no idea the whole lot - prep and tiling was done by the guy who fitted and tiled the bathroom. Looks like the job was done with max profit in mind hence the less than ideal prep so I doubt he used fastflex adhesive which I will use.

Originally Posted by Unregistered

Thanks for the help,

The floor is chipboard with 6mm ply, as for the adhesive no idea the whole lot - prep and tiling was done by the guy who fitted and tiled the bathroom. Looks like the job was done with max profit in mind hence the less than ideal prep so I doubt he used fastflex adhesive which I will use.

That will be your best bet...

Forgot to mention the floor seems quite solid, the ply has been stapled down every 4inch or so although I'm not sure what grade ply was used.

Theres little adhesive left on the ply its all stuck to the tile and is about 2mm thick can I re-lay these tiles as is with the old adhesive still on otherwise its off to the shops for some new tiles!

You will need to add screws to that floor as well....but is it possible that the ply could be replaced...?

Thanks Dave I will screw it down, the ply looks o.k and have been told to replace with 6mm hardibacker board should I decide take it up, don't really want to do it if theres no need.

Any more thoughts on re-using the tiles?

Personally i wouldn't re-use them for what they cost..

Originally Posted by nbates

yep its in front of me in black and white
title: tiling on wood floors

Its is advised not to tile direct onto floorboards, if your area is floorboard then make sure that all the floorboards are fixed securely (screwed down preferably) making sure that there is hardly any movement from the floorboards. once this is done fix down a sheet of 6mm thick marine plyboard all over the floorboards using panel pins to secure at every 150mm, then unibond the floor and allow to dry then fix the tiles using a flexible adhesive.

its a very reputable training provider in kent!! no names

i learnt a lot there but sounds like some things may have been a bit misleading!!?

Its ok we know which one it is...you said in an earlier post.

Originally Posted by Sir Ramic

Its ok we know which one it is...you said in an earlier post.

im i right in saying it has a good reputation?

Originally Posted by nbates

im i right in saying it has a good reputation?

Its not Alpine training is it?

well i've been doing it for 27 years!! wonder how many bad habits i've picked up!, dave's right in my book ie, ply thickness and SCREWS!! although i screw them every 150mm, as for re-using old tiles try soaking them in a plasterer's bath in hot water for half an hour and see if it softens up the adhesive,
bonny tiler

You can soak cement based adhesive as much as you want ..it won't soften it...well shouldn't shall i say........

You could try a gundlach scraper from trade tiler this might help....

TradeTiler.Ltd Chisels, Scrapers & Scribes

Originally Posted by Dave

No probs....remember just coz a fixer has been in the game loads of years it doesn't mean they do things right......

Well done Dave,one of the best quotes i have read on here

total brain **** youve lifted all your floor tiles, take up the existing ply and replace with 6mm marine ply while its up make sure all the boards joists etc are solid no bounce in the floor. once the ply is down pva it and its ready for tiles.

If you use these methods you`ll be on here very soon asking why its all failed again so soon.using panel pins/nails will not hold the ply down for thermal expansion reasons .and not only that but if you dont know if and where there`s any pipe work under there your asking for prob`s use correct depth screws and do as dave described

God damn it i always mess up with the quote box`s

Originally Posted by BDS

God damn it i always mess up with the quote box`s

looks ok to me..