Flashing.
Omaha Municipal Code § 49-816
in effectSec. 49-816. - Flashing.
The following provisions shall apply to flashing installation:
(a) Stack vents and vent stacks.
(1) Pipe passing through a built-up roof shall be made water tight with lead flashing weighing at least 2½ pounds per square foot, properly soldered, with a sleeve extending up, over, and into the top of the pipe.
(2) Pipe passing through an EPDM roof membrane shall be sealed with a molded EPDM flashing clamped to the pipe or an appropriately sized piece of uncured neoprene membrane directly adhered to the pipe.
(3) The board shall approve all flashing systems as to design and material used. The board will keep a list of all approved flashings on file with the board secretary. The list of approved flashings shall be made available on request.
(4) Plastic piping passing through a roof and not completely covered by the flashing shall be protected by a water-base, synthetic latex paint.
(5) Flashings on pre-engineered metal buildings shall be approved by the manufacturer of the building.
(b) Rainwater (roof) drains.
(1) Roof drains installed with a built-up roof:
(i) Shall be made tight with a four-pound sheet lead flashing or a flashing manufactured by laminating asphalt impregnated roofing felt to a non-plasticized chlorinated polyethylene with a nominal thickness of 0.040 inch.
(ii) Flashings must extend a minimum 12 inches beyond the outer circumference of the stone guard clamping collar.
(iii) Flashings shall be securely fastened to the drain body with the clamping collar.
(2) Sheet lead shall conform to federal specifications, QQ-L-201.
(3) EPDM roofing needs no additional flashing. The EPDM roofing shall be fastened to the drain body with an approved stone guard clamping collar.
(Ord. No. 40524, § 1, 10-20-15)
Source: City of Omaha, Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/ne/omaha/codes/code_of_ordinances?nodeId=OMMUCOCHGEORVOII_CH49PL_ARTVIIIQUWEINMA_S49-816FLFetched: 10/28/2026