Masons typically do the following:

• Read blueprints or drawings to calculate materials needed
• Lay out patterns, forms, or foundations according to plans
• Break or cut materials to required size
• Mix mortar or grout and spread it onto a slab or foundation
• Clean excess mortar with trowels and other handtools
• Construct masonry walls
• Align structures, using levels and plumbs
• Clean and polish surfaces with handtools or power tools
• Fill expansion joints with caulking materials
• Lay out and install rainscreen water systems

Masons build structures with brick, block, and stone, some of the most common and durable materials used in construction. They also use concrete—a mixture of cement, sand, gravel, and water—as the foundation for everything from patios and floors to dams and roads.

The following are examples of types of masons:

Brickmasons and blockmasons—often called bricklayers—build and repair walls, fireplaces, and other structures with brick, terra cotta, precast masonry panels, concrete block, and other masonry materials. Pointing, cleaning, and caulking workers are brickmasons who repair brickwork, particularly on older structures. Refractory masons are brickmasons who specialize in installing heat- and fire-resistant masonry materials in high-temperature areas such as boilers, furnaces, and soaking pits in industrial buildings.

Cement masonsandconcrete finishers place and finish concrete. They may color concrete surfaces, expose small stones in walls and sidewalks, or make concrete beams, columns, and panels. Throughout the process of pouring, leveling, and finishing concrete, cement masons use their knowledge of how conditions may affect concrete and take steps to prevent defects. On small jobs, such as constructing sidewalks, cement masons may use a supportive wire mesh called a lath. On large jobs, such as constructing building foundations, reinforcing iron and rebar workers install the reinforcing mesh.

Stonemasons build stone walls and set stone exteriors and floors. They work with two types of stone: natural-cut stone, such as marble, granite, and limestone; and artificial stone, made from concrete, marble chips, or other masonry materials. Using a special hammer or a diamond-blade saw, workers cut stone into various shapes and sizes. Some stonemasons specialize in setting marble, which is similar to setting large pieces of stone.

Terrazzo workers and finishers, also known as terrazzo masons, create decorative walkways, floors, patios, and panels. Much of the preliminary work of pouring, leveling, and finishing concrete for terrazzo is similar to that of cement masons. Terrazzo workers create decorative finishes by blending fine marble chips into the epoxy, resin, or cement, which is often colored. Once the terrazzo is thoroughly set, workers correct imperfections with a grinder. Terrazzo workers also install decorative microtoppings or polishing compounds to new or existing concrete.