Block and Brick Masonry Mortar

TYPE M (MR-02), TYPE S (MR-03), TYPE N (MR-04), COLOR (MR-05)


SPEC MIX® Mortar Cement & Sand mortar is a dry preblended mortar mix containing mortar cement and dried masonry sand formulated for superior bond, water retention and board life. Available in Types M, S, and N, each meets ASTM C 270 and ASTM C 1714 requirements. SPEC MIX Mortar Cement & Sand is available in color and is formulated for the installation of CMU, brick, and stone applications where high mortar workability and board life is required for good bond. In addition, custom mix designs are available for specific applications or properties, the standard Mortar Cement & Sand mortar is designed to be compatible with the characteristics of the specified masonry unit. It is acceptable for all types of masonry construction with submittal information available upon request. It may be used above or below grade when manufactured to the appropriate specification.

SPEC MIX Mortar Cement & Sand is produced under strict manufacturing standards, and complete quality control measures are implemented with each batch. A digital printout displaying the proper proportions per batch may be kept as a permanent record. Each SPEC MIX manufacturer certifies that SPEC MIX masonry products are designed to meet the project specifications and applicable ASTM and ACI standards.

SPEC MIX® Mortar Cement & Sand is available in 80 lb. (36.3 kg.) packages for easy hand loading or in 3,000 lb. (1,360.8 kg.) reusable bulk bags to be used with the various SPEC MIX® silo systems.


  • Total quality control with every bag
  • ASTM C 270 laboratory tested mix designs
  • Preblended with sand to minimize labor cost
  • Consistency from batch to batch, everyday
  • Great workability and board life
  • No sand piles or wasted materials left on site
Estimated Yields
80 lb. (36.2 kg) Bags3,000 lb (1,360.7 kg) Bulk Bags
4 in (100mm) Block15 to 17560 to 635
6 in (150 mm) Block12 to 14450 to 525
8 in (200 mm) Block11 to 13410 to 485
10 in (250 mm) Block11 to 13410 to 485
12 in (300 mm) Block10 to 12375 to 450
Modular Brick39 to 411,460 to 1,535
Queen Sized Brick33 to 351,235 to 1,310
King Sized Brick26 to 28975 to 1,050
Utility Brick23 to 25860 to 935
Note: The yields given above are approximate and depend on labor practices, site conditions, and design of work. Yields include typical waste. Some areas such as FL, CA, OR, WA experience higher yields due to construction practices. Please contact your representative for more specific yield information in your area.
ASTM C 270 PROPERTY SPECIFICATIONS (laboratory prepared)
TypeMinimum Compressive Strength at 28 days, MPaWater Retention, minimum %Air Content, maximum %
*When structural reinforcement is incorporated in cement-lime mortar, the maximum air content shall be 12%
CSA A 179 PROPERTY SPECIFICATIONS (laboratory prepared)
TypeMinimum compression strength at 28 days, MPaWater retention,
minimum %
Air content,
maximum %
M17.5 MPa7018
S12.5 MPa7018
N5 MPa7018
SPEC MIX D2W Workhorse
SPEC MIX BRICKLAYER 500 Regional Series