What is masonry mortar?

Masonry cement is basically normal Portland cement with added ingredients to provide the plasticity required for masonry work. Masonry cements are pre-packaged primarily as either Type N Masonry Cement or Type S Masonry Cement. Other types are available for specific circumstances. Type N Masonry mortar is recommended for general use in building non-load bearing walls as well as for exterior veneer walls not requiring high strength. Type S Masonry mortar is recommended for use in all masonry below grade as well as in building exterior load bearing walls requiring high strength. DO NOT use masonry cement for concrete jobs