Bricks are known for their durability and resistance to elements. However, they can be heavy and pose a danger for builders when lifting them during construction. Heavy lifting can cause low back pain or a herniated disc (a bulging of the disk material pressing on the spinal cord nerves that go to the legs). lightweight concrete bricks reduce this risk by reducing their weight. They can also help save money on installation costs because the wall can be constructed with fewer blocks.

The earliest versions of these blocks, commonly referred to in specifier terms as concrete masonry units or CMU, arrived on the scene over a century ago. These blocks are made with Portland cement and a lightweight aggregate, usually expanded shale. They are non-combustible and have good tensile and shear strength. However, their flexural tensile strength is less than that of conventional concrete.

Another advantage of these bricks is their ability to reduce heat transfer, which makes them a great option for areas with hot climates. Their insulating properties are also beneficial for colder zones. They are also very easy to apply paint to, which is a plus for anyone who wants their house to look attractive.

As a building material, these blocks are available in many different types. They are available as solid, fly ash, and cellular concrete bricks. Solid concrete bricks are usually used as load bearing and non-load bearing material in walls, partition walls, and panel walls. They are also used as backing for piers and retaining walls.