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Which size of notch trowel should I use for my tile or stone installation?
First of all, interior applications of tile should achieve a minimum
coverage of 80% and for exterior applications a minimum of 95% is
recommended. Back buttering the tile and stone will help achieve a
greater percentage of coverage.
Using an organic adhesive (mastic)
Wall tiles up to 8"x 8" (200 mm x 200 mm) - use a 3/16" V-notch trowel.
Using a thin set mortar
For all tiles or stones (wall or floor) up to 4"x 4" (100 mm x 100 mm) - use a 1/4" x 1/4" (6 mm x 6 mm) square notch trowel.
For all tiles or stones (wall or floor) up to 16"x 16" (400 mm x 400 mm) - use a 1/4"x 3/8" (6 mm x 9 mm) square notch trowel.
For all tiles or stones (wall or floor) greater than 16"x 16" (400 mm x 400 mm) - use a 1/2" x 1/2" (12 mm x 12 mm ) square notch trowel.
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