Internal Roof Drain Details

Properly locate roof drains scuppers and gutters to remove water from the roof s surface.

Internal roof drain details.

Provide extra insulation around the drain head to prevent condensation. This is a drainage point that can be installed across the roof s surface even in the centre of the roof. Materials use materials consistent with the roof membrane manufacturer s requirements. Design saddles or crickets to create positive drainage to the drain.

If water collects in one spot in the middle of your roof then installing an interior drain there to move the water is a good solution. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Other than the baffle a siphonic roof drain has the same features as a traditional roof drain including a drain body flashing ring dome strainer and fastening hardware. Zurn makes it easy to size roof drains.

When sizing roof drains the limiting factor for the amount of water each drain will carry away is the size of leader therefore increasing. And 4 area handled by each drain. Download free high quality cad drawings blocks and details of roof drains organized by masterformat. 2 total area of roof.

Execution here are seven factors to use when installing roof drains. In contrast to traditional roof drains siphonic roof drains are not designed with a large diameter or deep sump bowl because their operation is by means of sub atmospheric. Recess the drain below the roof surface.