The work they perform varies in complexity, from laying a simple masonry walkway to installing the ornate exterior of a highrise building. Bricklayers build walls, floors, partitions, fireplaces, chimneys, and other structures with brick, precast masonry panels, concrete block, and other masonry materials. Some specialize in installing firebrick linings in industrial furnaces.
Stonemasons build stone walls as well as set stone exteriors and floors.
They work with two types of stone natural cut, such as marble, granite, and limestone and artificial stone made from concrete, marble chips, or other masonry materials. Stonemasons usually work on structures such as houses of worship, hotels, and office buildings. In putting up a wall, bricklayers traditionally have built the corners of the structure first. Because of the necessary precision, these corner leads are very time consuming to erect and require the skills of the most experienced bricklayers on the job. After the corner leads are complete, less experienced bricklayers fill in the wall between the corners, using a line from corner to corner to guide each course or layer of brick.