Internal Roof Drain Details

And 4 area handled by each drain.

Internal roof drain details.

Zurn makes it easy to size roof drains. 2 total area of roof. 3 size of leader required. This is a drainage point that can be installed across the roof s surface even in the centre of the roof.

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. 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. Execution here are seven factors to use when installing roof drains. Materials use materials consistent with the roof membrane manufacturer s requirements.

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. 1 rate of precipitation. The four things you will need to know are. Design saddles or crickets to create positive drainage to the drain.

When sizing roof drains the limiting factor for the amount of water each drain will carry away is the size of leader therefore increasing. Download free high quality cad drawings blocks and details of roof drains organized by masterformat. Recess the drain below the roof surface.