The biggest advantage of a brick/steel beam system is that since it does not support or carry the load of the building, the interior structure of a building can be built before brick veneer is placed without delay. This makes it possible to close the building independently of the brick work and to place it under a roof more quickly. Therefore, time-consuming interior work that other building trades have to perform can be carried out on schedule, instead of having to wait in the brickwork. This also allows masons to take advantage of the best weather and temperature to set the brick in mortar without worrying about the possibility of frost. This makes the general contractor, subcontractors and building owners happy!
Another great advantage of this type of wall is that it is highly resistant to moisture because the cavity between the brick and the steel studs can be drained efficiently through the use of properly placed flashing and weep holes in the brick work. The cavity between the two walls can also greatly reduce heat gain or loss through the entire wall. The air gap provides thermal separation between the brick and the steel studs. Brick has a high thermal mass, which gives it the ability to store and release heat slowly over time. This effect, according to current energy codes, provides a higher r-value for a wall of this type. Rigid board closed cell insulation can also be placed within the cavity area to prevent additional thermal loss.
FOUNDATION FOR A BRICK VENEER WALL/STEEL STUDS
Although some building codes allow the support of brick veneer on a wood foundation, it is strongly recommended that the wall be supported on a concrete or masonry foundation. Brick work can extend below finished grade if properly constructed to minimize water penetration. Specially designed metal ties must be used to anchor or tie the brick veneer to the steel studs. Regular corrugated metal ties are not permitted when brick veneer is attached to metal studs. They must be spaced vertically every 16 inches in height and be 32 inches apart horizontally. They must also be well embedded in the joints of the mortar bed. It is very important that the rear tie rod assembly that holds it in place is securely attached to the steel stud and not just the siding so it doesn’t come off! Well-filled mortar joints and good workmanship are of particular importance.