Solar Attic Fan Curb-Mount Adapter (For tile roofs or flat roofs ONLY)
This curb mount adapter is NOT required for basic roof mount fans. The curb mount adapter is for metal or tile roofs. It can also be used on flat roofs where a “curb” must be built to elevate the fan off the roof surface. Typically for a residential sloped roof, you do not need a curb mount adapter. For commercial buildings with flat roofs, you will need to make a curb with 2 x 4’s. Make a 24″ square. Then flash with waterproof membrane. Put the curb mount adapter on top of the 2×4 “box”. Then screw the fan down on top of the curb mount adapter. Then you will have an extra 4″ elevation up from the roof surface. This will prevent water from coming in.