An overflow drainage system will be designed to function independently of the primary system to drain water from the roof.
Scupper roof drain details.
Sumped roof drain with parapro flashing.
Thru wall scupper detail drawing dxf 246 88 kb thru wall scupper detail drawing pdf 24 91 kb wind resistant gutter.
In short a scupper is a detail that provides drainage to a roof system by allowing the water runoff from the roof to exit the roof through a metal edge parapet wall or through the deck into a downspout or leader not run through the interior of the building.
Paraguard roof drain with paraflex 531 liquid flashing.
Sumped roof drain with paraflex 531 liquid flashing.
Scupper with parapro flashing.
Drain with inter ply parapro flashing.
Scupper with paraflex 531 liquid flashing.
This detail illustrates the installation of a scupper through a raised.
To the perimeter blocking.
Where a roof is completely surrounded by parapet walls and drainage is provided by scuppers or internal drains overflow scuppers should be provided.
They will either be a part of the primary drainage system or they will be a part of the secondary overflow drainage system a primary drainage system is designed to remove water from the roof as quickly as possible.
Scuppers will play one of two roles in a roof system.
Copper hercules bur detail drawing dwg 637 27 kb copper hercules bur detail drawing dxf 568 36 kb.
Scupper at raised roof curb.
Scupper with conductor head.