Piping-Through-Roof-Deck.pdf

This is a technical drawing specification document detailing the installation requirements for hot and cold piping penetrations through a built-up roofing (BUR) system. The document provides comprehensive guidance on the proper methods for routing pipes through roof decks while maintaining system integrity and weather protection.

The specification outlines a multi-layered approach to piping penetrations, beginning with wood nailers secured to the roof deck using appropriately spaced fasteners in two staggered rows at 24-inch on-center intervals. The installation includes specified BUR insulation, two-ply stripping flanges set in asphalt cement and mechanically fastened at 3-inch on-center intervals, with metal flanges primed before application. The specification requires pipes to slope downward and away from the hood, sheet metal collars with proper sealing, and metal hoods incorporating cross breaks or slopes for drainage. In cold climates, additional insulation inside the metal work is required. All fasteners are to be spaced at 8-inch on-center, with asphalt cement and membrane sheet sealing applied to ensure watertight closure and prevent moisture infiltration.

No pricing information, contract term details, award dates, bidder requirements, or procurement timelines are contained within this technical specification document, as it functions solely as a design and installation guideline for roofing contractors executing this specific work element.