Roof Drain Section
Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs.
Roof drain section. Inner roof drains are used on flat roofs and include a low section or channel that collects water and feeds it into a concealed drain that leads to an underground drainage system. Design and installation of roof drainage systems shall comply with section 1503 of this code and sections 1106 and 1108 as applicable of the international plumbing code. Inner drains are resistant to freezing but can require careful maintenance to prevent problems. P 1503 4 1 secondary emergency overflow drains or scuppers.
The main benefit of inner drains is that the system is hidden from view.