
What size notch trowel should I use?
The size of the notches determines the amount of setting material that is put on the surface. The notch size is determined by the size of the tile you are setting. You should use the proper-sized notch trowel to ensure 100% coverage of solid mortar under tiles. With very irregular tiles, back-buttering may be advisable. For detailed recommendations see our Notch Trowel Size Guide.

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