Control joint bead, also known as expansion joint bead, is a type of reinforcement material used in the construction of walls, floors, and other building elements. It is typically made of metal or PVC and is designed to provide a straight and durable edge to the joint, as well as to allow for movement and expansion due to temperature changes and other factors.
Control joint bead is installed by being embedded into the substrate, such as concrete or masonry, at the location of the joint. It is then securely anchored to the substrate using special fasteners, such as screws or nails.
The use of control joint bead in construction helps to prevent cracking and splitting in the substrate due to stress and movement, particularly in areas where significant temperature changes or other environmental factors are present. It also helps to provide a straight and durable edge to the joint, making it more resistant to damage and wear over time.
Overall, control joint bead is an important component in the construction of walls, floors, and other building elements, providing a straight and durable edge to the joint and helping to prevent damage and deterioration over time.
