What is the primary characteristic of Type N mortar?

Type N mortar is characterized by its medium strength, typically with a compressive strength rating of about 750 psi. This makes it suitable for a variety of general masonry applications, such as above-grade walls and structures that are not subject to extreme loads or pressure. It provides a good balance of flexibility and adhesion, making it ideal for use in moderate exposure conditions, such as typical residential construction. The properties of Type N mortar also allow it to accommodate slight movements in buildings, making it a common choice for many general masonry jobs where strength and durability are needed but not to the extent required for heavier structural elements.

Regarding the other options, low-strength mortar is more applicable for garden walls and less demanding applications, while Type N excels in providing sufficient strength for everyday use. There are types of mortar with no specific strength rating, but Type N does have a recognized compressive strength. Lastly, high-strength mortars are tailored for heavy load-bearing structures, which falls outside the capabilities of Type N mortar, aligning it with medium-strength needs instead.