Mortar between masonry units consists of a mix of lime putty and sand. It is characterized by a light beige colour. Lime mortar is a low-strength (weak) mortar, and it can be easily scratched (removed) from the wall using a sharp tool (like a key). Lime mortar can be found in older buildings, mostly fired clay masonry construction.

Fired clay brick masonry in lime mortar, Canada (Ojdrovic Engineering)

Fired clay brick masonry in lime mortar, Canada (Ojdrovic Engineering)