What type of mortar is most commonly used in masonry construction for its strength and durability?

Type M mortar is the most commonly used in masonry construction due to its high compressive strength, which makes it ideal for load-bearing walls and structures. This mortar has a minimum compressive strength of 2,500 psi, which provides excellent durability and resistance to weathering, making it suitable for external applications. Its strength allows it to support heavy loads and masonry units effectively, which is essential for structural integrity in masonry projects.

In addition to its strength, Type M mortar is often used in situations where high resistance to water penetration is critical. It is typically utilized in foundations and below-grade applications where moisture can be a concern. The combination of these properties makes Type M mortar a preferred choice among professionals in the masonry field, especially in environments where durability and longevity are paramount.