How to Mix Thinset
The right thinset consistency can make the difference between a good tile installation and a bad one.
Start with clean, empty bucket that’s large enough to hold the thinset being mixed. A 5-gal. bucket is pretty typical and add a few inches of clean water.
Pour in the Thinset
With the water already in the bucket, pour in some thinset from the bag. For now, add enough to soak up the water in the bucket. You’ll be able to adjust the consistency of the mix later either by adding more water or adding more thinset.
For mixing, you can do the work by hand with a margin trowel, but a mixing paddle makes life easier.
Tip for Using a Paddle Mixer
Put one food on the edge of the bucket to keep it from spinning as you work the mix.
Add water or additional thinset until you get desired consistency. Mixed correctly, the thinset should be firm enough to stick to your finger without falling off.