600x900 limestone floor - TilersForums.com

[Kevbos]

It's probably hardebacker board with the grooves in for pipework hence the look of preformed blocks ..use the 2 part adhesive

 

[J Sid]

Its this here. polypipe overlay and it says can be tiled straight onto....

its a broken link , can you redo or name the product

 

[Flintstone]

I would do some propper research into this there has been numerous threads on how to tile onto these polly pipe type floors, i don't believe it's as simple as lay a mat and tile it. Are the tiles thick, 20mm?

 

[Bill]

I have tiled straight onto polypipe boards with single part flex - no comebacks yet and this was 18 months or so ago but for stone, I would seek further advice about some kind of fracture mat.

 

[Mikephillips85]

I fixed 600x600 travertine onto polypipe overlay board over 10 years ago in my brothers house not a single hairline crack to be seen so it is possible but its about belts and braces now too many failures cover your back
Good luck

 

[peteablard]

I tiled over the Polypipe system a couple of times about 3-4 years ago. Decoupled and used Weber rapid spf with no problem. Fixed marble on both jobs

 

[SJPurdy]

Beware that the size of one or more of your 4 floors might be at or above the limit for a heated floor without intermediate movement joints.

 

[Kevbos]

Just find out name of the heating and the boards used .look up their tech phone numbers .sol to both see what they advise .get them to send specifications and give to customer .let them make decision for you .problem solved

 

[Kevbos]

I tiled on this system end of last year .wunda under floor heating boards Maori 2 part adhesive as specified .the tiles still cracked and broke everywhere. But I done specifications to the letter

 

[Bill]

The solid bed theory doesn't look like it was done to the letter?