Discuss Adhesive not sticking in the Tile Adhesive and Grout Advice area at TilersForums.com.

O

One Day

Your floor tile failure was caused by the following factors.
Individually they could have caused failure, but combined it was a certainty.

Chipboard floor - can be tiled onto but only with very special adhesives and with 100% coverage to tile and floor.

Heated floor - can be tiled easily enough but must have an uncoupling membrane such as Schluter Ditra, to separate the adhesive bed and tiles from the expansion/contraction stresses caused by the heating - as seen readily in the adhesive cracks in your photos.

PVA - simply put, this forms a skin and prevents (not aids) adhesion.
Acrylic primers, or SBR only should be used.

C2 adhesive has polymer added to bond to porcelain (standard sand and cement won't bond) but does not have anywhere near enough polymer to increase the flexibility required for a heated, timber floor.

Timber Floor - if your floor is "floating" as I suspect it is, then 90% of professional tilers will just walk away from them. There is just too much risk of movement, both deflection (bounce) and lateral (sideways) movement. They can be tiled. but not without a lot of prep, careful checking and special materials.

Tiles aren't back-buttered. - It is recommended that large format tiles, particularly with waffle backs, are back-buttered with a thin layer of adhesive to aid "bedding in" and ensuring a solid, even bond. It also removes any risk from tiles with dusty backs.

Hope that helps explain what has gone wrong!
 
O

One Day

O

One Day

Gemma sorry you have been duped by a so called tiler. There are lots about I am afraid. But It's nothing to do with being old. Most of the older guys on here have a lot more idea than most of the younger ones. Lots of experience with with a little age. Pete.

I'm 42. Which category do I fall into?! :rolleyes:
 
O

One Day

Still a wet behind ears youngster....:)

baby_0.jpg
 

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Adhesive not sticking
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Tile Adhesive and Grout Advice
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28

Which tile adhesive brand did you use most this year?

  • Palace

    Votes: 9 5.6%
  • Kerakoll

    Votes: 17 10.5%
  • Ardex

    Votes: 11 6.8%
  • Mapei

    Votes: 45 27.8%
  • Ultra Tile

    Votes: 21 13.0%
  • BAL

    Votes: 38 23.5%
  • Wedi

    Votes: 4 2.5%
  • Benfer

    Votes: 3 1.9%
  • Tilemaster

    Votes: 22 13.6%
  • Weber

    Votes: 19 11.7%
  • Other (any other brand not listed)

    Votes: 17 10.5%
  • Nicobond

    Votes: 8 4.9%
  • Norcros

    Votes: 2 1.2%
  • Kelmore

    Votes: 5 3.1%
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