Internal Roof Drain Details

Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs.

Internal roof drain details.

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. The roof drain should be recessed below the roof surface. This is a drainage point that can be installed across the roof s surface even in the centre of the roof. Tapered insulation panels should be installed around the drain to ensure positive flow of water towards the drain.

Use an insulating fill or tapered insulation for slope. Roof drains zurn plumbing products groupspecification drainage operation 1801 pittsburgh avenue erie pa 16502 phone 814 455 0921 fax. This can be accomplished by setting the head of the roof drain below the insulation level and by providing a sump at the drain. Internal roof drains properly slope the structural framing and deck minimum inch per foot.

Recess the drain below the roof.