Product Description Necessary to achieve the required levels of ventilation as stipulated in Building Regulations Approved Document J 2010. Air bricks – also known as vent bricks or ventilation bricks - are traditionally made of clay, and most still are today. Air bricks can be installed quickly and easily. Rooms with a cavity wall, a void under a wooden floor, or that contain a gas appliance, need air bricks and cavity wall ducts to increase airflow and minimise the possibility of damp or accumulation of gases.
