CustomBlend® Economical Non-Modified Thin-Set Mortar

Product ID: TDS-191

Non-modified mortar ideal for Saltillo tile and other similar clay pavers. For dense tile or installation over exterior grade plywood use Custom Building Products’ Thin-Set Mortar Admix. Suitable for interior and exterior applications.

  • For installations over concrete floors
  • Mix with Thin-Set Mortar Admix for higher bond strengths
  • Meets ANSI A118.1 without additives
  • Meets ANSI A118.4 and A118.11 when mixed with Thin-set Mortar Admix

Coverage Chart


Trowel Size Min Coverage Max Coverage
Longest side of tile less than 8" use 1/4" x 1/4" x 1/4" (6 x 6 x 6 mm) Square-Notch 85 sq. ft. (7.9 - 8.4 M²) 90 sq. ft. (8.4 M²)
Longest side of tile 8" to 15" use 1/4" x 3/8" x 1/4" (6 x 9.5 x 6 mm) Square-Notch 60 sq. ft. (5.6 M²) 67 sq. ft. (6.2 M²)

Chart for estimating purposes. Coverage may vary based on installation practices and jobsite conditions. For more sizes, use the material calculator at or contact CUSTOM Technical Services at 800-282-8786.

Recommended minimum coverage (80% for dry areas and 95% for wet areas and exteriors). Back buttering may be necessary.

Note that mortar coverage does not include backbuttering tiles. When backbuttering, consider the tile underside pattern and depth to estimate thickness and usage to add to your estimate.

Related Product(s)

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