Internal Roof Drain Details

Recess the drain below the roof.

Internal roof drain details.

Internal roof drains properly slope the structural framing and deck minimum inch per foot. This can be accomplished by setting the head of the roof drain below the insulation level and by providing a sump at the drain. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. 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.

Brittle tar will crack and leaks will occur. Use an insulating fill or tapered insulation for slope. Roof drains must be firmly secured to the roof with an underdeck clamp otherwise due to snow loads rain loads and reg ular expansion and contraction the drain will work in and out of the roofing causing roofing membranes to flex and fail. Roof drains zurn plumbing products groupspecification drainage operation 1801 pittsburgh avenue erie pa 16502 phone 814 455 0921 fax.

The roof drain should be recessed below the roof surface.