I’ve worked with some fussy tile setters in the past. Everything has to be a particular way with them.
The boxes of tile have to be opened a certain way, their spacers have to be positioned just so, and their tools have to be organized in a certain manner.
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Good thinset mortar coverage underneath your tiles
What I didn’t realize is that these OCD tile setters had stumbled upon a technique to get better thinset coverage under their tiles.
It’s something so simple but I always chalked it up to their “anal retention” and never saw the benefit of it. Until I watched a tile video demonstration that is.
The troweling “trick”
It’s almost irresponsible to call this a trick. It takes no more effort than any other technique. And like I’ve mentioned already there are some (the “anal retentive”) that are already doing this.
Running your trowel lines all in the same direction.
That’s it. That’s the trick.
Why it works
When troweling in circles or swirls air gets trapped in the ridges. Running them all in the same direction gives the air a way out when a tile is set upon them. Less air trapped in the thinset will mean improved thinset coverage.
You may not think this is that big of a deal. But this troweling technique really does improve your thinset coverage.
The video below was made by Custom Building Products for the National Tile Contractors Association. It does a great job of showing how this technique works. It also talks a bit about trowel size and large format tile.
So that’s it. I never would have guessed the OCD guys were right.
If you’re interested below is the original Trowel and Error Video. It’s worth watching just for the 1980’s wardrobe alone.