Terminating Brick Veneer On Low Roofing

Roof wall interface detail anchored brick veneer cmu backing.

Terminating brick veneer on low roofing. A critical and often overlooked design detail is at the termination of a parapet coping at a wall. The veneer is supported below the roof by cmu or other supporting structure. At solid masonry walls a termination bar which will get lapped by a counterflashing let into the mortar joint can work but with brick veneer only through flashing will prevent leaks. This detail illustrates a sloped roof terminating into a higher masonry veneer wall.

Above the roof a series of short masonry flashing components4 are mechanically fastened to the backup wall using a termination bar with continuous sealant5 along the top. Outside face of the veneer through the thickness of the brick veneer across the air space to the backing and then up behind the water resistant barrier or attached over the water resistant barrier with a termination bar. If made of sheet metal veneer ties shall be not smaller in area than 0 0336 by 1 inch 0 853 by 25 mm or if made of wire not smaller in diameter than 0 1483 inch 3 76 mm wire. The exterior wall covering material is then kept off the surface of the roof.

Below is a sketch of what the flashing at roof to wall intersections should look like. The most common mistake at this intersection is to allow the metal coping to but up to the wall without the application of termination metal. This way each time in the future when the roofing material is replaced the stucco brick or stone veneer will not need to be cut out and replaced. Veneer ties shall be corrosion resistant metal capable of resisting in tension or compression a force equal to two times the weight of the attached veneer.

Where more than one piece of flashing is required flashing pieces should be overlapped and sealed with a compatible mastic. The tall interior single wythe cmu wall transitions into an anchored veneer wall above the roof line.