The Complete Guide to Masonry Cement Types

Masonry cement is essential for the finished appearance and durability of your masonry project. Whether you are working on a fireplace indoors, building a retaining wall or working on another type of project, this guide can help you choose the right product.

Your Cement Type Selection

The types of mortar and masonry cement you choose will vary by application:

• Type M mortar and masonry cement: Of all masonry cements and mortars, Type M has the highest strength but the lowest workability. It is commonly used for load-bearing walls in commercial projects. 
• Type S mortar and masonry cement: With a high strength, Type S masonry cement or mortar can withstand exposure to soil pressure, so it is an option for retaining walls, foundations and other below-grade uses. Workrite Type S masonry cement meets ASTM C 91, C 270 and C 979 standards, with a 2620 psi 28-day compressive strength.
• Type N mortar and masonry cement: This medium-strength cement or mortar with high workability is common in residential and some commercial projects, often for above-grade and interior walls. The Workrite portfolio of products includes Type N masonry cement, meeting ASTM C 91, C 270 and C 979 requirements and offering 1370 psi 28-day compressive strength.
• Type O mortar and masonry cement: Low-strength Type O is often used for historic restoration and interior non-load-bearing walls. It offers minimal structural support compared to other masonry cements, but it has a soft set and high workability, making it an excellent option for integrating with delicate older masonry without damaging the original work. The Workrite portfolio includes a Type O masonry cement that meets ASTM C 91, C 270, C 979 and C 780 standards. 

Choosing Among Masonry Cement Types

Understanding mortar types and options for masonry cement is the first step, but to ensure blueprint adherence and project success, you need to consider other factors. For example, if you are working on a historic restoration project, it may be essential to find made-in-America products that align with your project’s cultural goals. If you are working on a decorative project, colored masonry products can help you achieve the look you want.

Contact Us

We have been helping architects, mason contractors and other professionals choose the right products since 1987. We remain one of a small number of U.S.-owned manufacturers of colored masonry cement.

We make it simple to order and get a sample so you can find the right product. Contact a local product specialist for more support.