How Do You Measure Thinset Thickness

They are measured in the same manner, the first number is the width of the notches (the distance between the teeth), the second number is the depth of the notch. Using a 1/2” x 1/2” square-notched trowel will leave 1/2” ridges of thinset on the substrate with 1/2” spaces between each ridge.

How do you calculate thinset thickness?

1. A square-notched trowel with tooth spacing that is the same as the tooth depth creates a thinset layer that is one-half the tooth depth.
2. A 3/8 X 3/8” square notch trowel, like this one, creates a 3/16” thick layer of thinset.

How do I know if my thinset is too thin?

BUT, mixing it too thin also makes it weak. Thinset, once mixed, should resemble warm cake icing. Not too thin, but thin enough it’s pourable or it falls off the mixing knife. Only mix enough thinset as you can use in 15 or 20 minutes.