The wall can be made right on the premises or shipped in already made.

Precast Walls

Precast concrete walls come in many forms. Some are reinforced with steel ribs, and others are solid panels. The controlled environment of a factory allows the precast walls to set and cure no matter what the weather. As a building foundation, these panels can be installed in any climate zone.

Block Walls

Concrete block walls can be used for foundations and retaining and decorative walls also. They come in different shapes and sizes for different jobs and designs This type of concrete wall is one of the more inexpensive and less time consuming ways to build a wall.

Poured Walls

Poured concrete walls can be used for a foundation, retaining wall or decorative wall. This type of wall is expensive and time consuming to construct.

Colored Walls

Colored concrete walls are available in all the poured concrete techniques and some of the pre-made panels. Many colors are available in addition to the options for the natural colors of stone and brick. 

Stucco Walls

A stucco concrete wall is a thin layer of concrete that goes over an existing wall. This is an inexpensive way of giving a wall the look of concrete.

Stamped Walls

The stamping is done using the poured concrete technique, with the forms molding the concrete in the shapes of stones or masonry patterns instead of as smooth panels. This technique is less expensive and takes less time than building a stone or masonry wall.

Resource: ehow.com