Tiling on chipboard - why not?

[scribbler]

Lots of good replies here. As another newbie, I can see the difficulty when faced with such a client, and think it might be a good idea to pop a small bit of 'blown' and crumbly chipboard in amongst my tools to illustrate the point to any customers who are insistant about it.

 

[Rich]

Isnt it mad that these people will pay good money for the perfect tiles, the right adhesives, pay for a pro tiler to come in and carry out the work but then wont listen when you tell them that if you put the floor down it would most likely lift in 6 months... I dont get it :nonod:

 

[Scott]

Lots of good replies here. As another newbie, I can see the difficulty when faced with such a client, and think it might be a good idea to pop a small bit of 'blown' and crumbly chipboard in amongst my tools to illustrate the point to any customers who are insistant about it.

Just take a Weetabix along, its exactly the same, its even 18mm think and before you ask yes i did just go measure one!

Only difference is i dont have milk on my chipboard in the morning :drool5:

 

[Superally]

I was a big fan of 18mm ply, until I read some of the threads on here (cheep nasty WPB) etc. I now lean towards backer-boards. Chip board never was, and never will be a suitable substate for tiles. Imho:ban:

I agree with above....caught me out and when shown to Bal rep he said that the ply had been treated with a releasing agent to stop the boards sticking together......beware B+Q plywood......hardiebacker rules

 

[steveboy]

Isnt it mad that these people will pay good money for the perfect tiles, the right adhesives, pay for a pro tiler to come in and carry out the work but then wont listen when you tell them that if you put the floor down it would most likely lift in 6 months... I dont get it :nonod:

Sure is mad!

I'm just back from pricing a job and it's a right mess, the woman told me that the sink came away from the wall and flooded the bathroom, and that the bath has droped about an inch. She has those sticky down tiles with 6mm ply under them. Anywho I removed the bath pannel to show her why its like that, she couldnt believe it, how the chipboard has warped so much. I explaned how it will be like that under all the plyboard and what needs to be done to sort it all and shes happy with that, Just need to work out how much to charge to remove the whole bathroom and rip the old floor and replace it then tile the walls round the bath and possibly the fllor aswell.

 

[derricktiling]

wot about covering the floor with the orange mating from germany then tiling:mad2:

 

[The Legend; Phil Hobson RIP]

wot about covering the floor with the orange mating from germany then tiling:mad2:

Schluter Ditra mat/ Dural CI are not suitable for overlaying chipboard. They are not designed to deal with deflection, more for lateral movement ie. screed shrinkage due to drying, crack isolation, etc.:ban:

 

[derricktiling]

so what size ply would u use on top of the chipwood floor:mad2:

 

[Rich]

so what size ply would u use on top of the chipwood floor:mad2:

If you couldnt replace a chipboard floor (always best if poss) and you have to overlay with ply, I wouldnt tile onto it if it was less than 15mm.

 

[derricktiling]

i thought so, thanx for confirming that for me, im still going to use the orange matting it should help abit shouldnt it .