Water Repellent Mortar

Words: Dan Kamys

Amerimix Water Repellent Mortar www.amerimix.com

Amerimix Water Repellent Mortar with RainBloc GP is part of the total RainBloc system. When used with concrete masonry units that contain RainBloc, it creates a wall system that has been proven in both the lab and on jobsites to inhibit water penetration, creating a superior moisture barrier. RainBloc GP is the only patented, mortar admixture that is traceable, detectable, and measureable in hardened mortar. Available in portland, lime, and sand (AMX 410 WRM) and masonry cement and sand (AMX 510 WRM). The series of mortars includes the following features:

  • Traceable, detectable and measurable
  • RainBloc GP is proportioned correctly in every batch
  • Exceeds water repellency requirements of the “Upload Test” specified in ASTM C 1384
  • When used in conjunction with concrete masonry units manufactured with RainBloc, the National Concrete Masonry Association Rated this wall assembly “E” for excellent using ASTM E 514.
Stop Assuming, Start Assigning: How To Communicate Actionable Tasks
October 2026

Communication is the act or process of using words, sounds, signs, or behavior to express or exchange information or to express thoughts, feelings, etc., to another person. It is such an important part of a successful business and for construction projec

New CMHA Manual Advances Masonry Storm Shelter Design
October 2026

A new manual from the Concrete Masonry & Hardscapes Association (CMHA) provides structural guidance to help engineers, architects, and mason contractors design and build ICC 500-compliant tornado shelters using reinforced concrete masonry. Funded by the

MARSHALLTOWN Returns as a Silver Partner in 2027
October 2026

Ironsite Continues as a Cornerstone Partner into 2027
October 2026

The Mason Contractors Association of America (MCAA) is thrilled to announce that Ironsite will continue as a Cornerstone Partner into the 2027 Masonry Alliance Program.