Engineering bricks are designed for use where strength and low levels of water absorption are paramount, traditionally this may be on applications such as retaining walls or for ground works.
They are specifically manufactured to be denser and stronger than ordinary facing bricks. They are supplied in accordance with two different classifications; Class A and Class B. This is based on minimum compressive strength and maximum water absorption not falling below 70 N/mm 2-4.5% and 50 N/mm 2-7% respectively.
The majority of engineering bricks sold in the UK are smooth red Class B bricks, as they are among the cheapest bricks available to the construction industry however, there has been a recent rise in the popularity of Class A bricks. The colour, quality and distinctive appearance of Class A bricks means they lend themselves to facing applications.
Class B bricks are considered less attractive as their colour is less uniform, yet there are some situations where they have been used instead of facing bricks to provide contrast in the appearance of brick clad buildings.
EH Smith stock and supply both Class A and Class B engineering bricks at all of their branches across the UK. Please contact one of our specialist brick teams to check stock availability and discuss delivery requirements.