From M to S: Types of Mortar and Mortar Mix Ratios
4 Common Types of Mortar: Uses and Mix Ratios. There are a wide variety of mortar mix ratios, especially when it comes to special-use applications of mortar. However, there are four main types that see the most use in professional and DIY circles: N, O, S, and M. Each of these main types differs when it comes to durability and tensile …
