This tough, durable mortar is just right for masonry foundations, manholes, or sewers. Type S mortar is designed for “below grade” or underground projects.
Type N mortar can endure high temperatures and rough weather, thanks to its composition of one part cement, one part lime, and six parts sand. It can also be used in soft stone masonry. It can be used for interior or exterior purposes, and it is a load-bearing mortar type, which means it can handle significant amounts of weight, up to 750 pounds per square inch (psi). For example, type N mortar works well for construction above ground. Mortar is given a grade based on its composition and the uses for which it has been designed. This guide offers an overview of type O mortar: what it is and how you should use it. If you’re curious about type O mortar and whether it might work for your project, it’s a good idea to do some research first. Mortar comes in a wide variety of types, with the most common being M, N, S, and O. Mortar acts as a thick paste at first, but it slowly dries and sets into a hard, durable substance, ensuring the longevity and durability of your wall. When you’re building a brick wall, you need mortar in between the bricks to solidify the structure and hold it all together.