Internal Roof Drain Details

When sizing roof drains the limiting factor for the amount of water each drain will carry away is the size of leader therefore increasing.

Internal roof drain details.

Materials use materials consistent with the roof membrane manufacturer s requirements. 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. Download free high quality cad drawings blocks and details of roof drains organized by masterformat. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs.

Execution here are seven factors to use when installing roof drains. Recess the drain below the roof surface. The four things you will need to know are. Design saddles or crickets to create positive drainage to the drain.

1 rate of precipitation. 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. This is a drainage point that can be installed across the roof s surface even in the centre of the roof. 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.

Provide extra insulation around the drain head to prevent condensation. 2 total area of roof. Zurn makes it easy to size roof drains.