R1150 Combined Small Sump Roof Drain and Secondary Overflow System


MIFAB® R1150 Series combined roof drain and secondary overflow system, consisting of a one piece lacquered cast iron drain body with integral sump receiver, cast iron waterproofing membrane clamp rings with integral gravel stops, one 2 ½” (64) high integral cast iron overflow standpipe and two self-locking metal dome strainers with a free area of 43 square inches each.

SKUs: R1152, R1153, R1154


Series R1150
SKU R1152, R1153, R1154
Function Used in any type of conventional or flat roofs where a safety overflow, which receives water only when the accumulation is greater than the height of the standpipe is required to be located beside a standard roof drain. The standpipe can be adjusted to attain the desired overflow water depth. Dome provides for efficient drainage of rainwater and prevents debris from entering the drain line. Anchor flange and membrane clamp with tongue in groove design provides for secure grip of membrane and roof flashing materials.