Is it effective to remove voids under tiles with an Adhesive Injection system


I've just had the T shaped corridor tiled with 450x450 ceramics that match and continue the pattern from the kitchen. It appears that the tiles have been "spotted" rather than being laid on adhesive with complete coverage. The sound and evidence at door thresholds confirms that the bulk of the tiles have voids below. I've seen the videos for Fix-A-Floor which avoids the need to drill through tiles. Is it an effective solution for the problem. The tiles we've used are no longer available and the matching "perfect" tiles in the kitchen run wall to wall under the fitted units.


ANSWER -  Spot bonding tiles leaving voids under tiles that produce hollow sounds is not an acceptable tile installation method in the industry.

Over the years when I have seen attempts to inject epoxy liquids through drilled holes in the grout joints, I have not seen it work successfully.

Although recently we intrusively inspected a tile floor that used Fix-A-Floor to fill the voids through holes they created in the grout joints, and I was surprised to see that it did work well.  For the tiles we removed the voids were mostly filled with this product.

One thought on “Is it effective to remove voids under tiles with an Adhesive Injection system

  1. Ian says:

    Thanks for that Donato. That’s pretty much what I expected but it’s reassuring to hear that Fix-A-Floor works as despite a majority of good reviews I’m always nervous when I encounter a couple of bad ones. I’ll probably give the Fix-A-Floor a try. If it doesn’t do the job or adversely effects the bond I can relay with the remaining “spare” tiles I have. It’s madening to see such a poor job done for the sake of pocketing the price of a single bag of adhesive.

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