Hart Cooley 12rf Adjustable Gas Vent Flashing 12 in Galvanized

Product Description

The HART COOLEY 12rf is an adjustable gas vent flashing designed to create a weathertight seal where a gas vent pipe exits through a sloped roof. Constructed from galvanized steel, it accommodates roof pitches from 0 to 6/12, making it suitable for a wide range of residential and light commercial rooflines. The flashing measures 12 inches in nominal pipe size with an 18-inch length, providing sufficient overlap for a secure, watertight installation. HVAC technicians and plumbers install this component as part of a properly drafted B-vent or single-wall gas vent system to prevent water infiltration at the roof penetration point.

This flashing is used on sloped roofs where natural gas or propane appliance vent pipes — such as water heater, furnace, or boiler vents — penetrate the roof deck. The adjustable design allows the base to conform to low-slope through moderate-pitch roof surfaces without requiring a separate pitch-specific flashing. It is a standard component in residential gas vent installations and is field-adjusted on the job to match the existing roof pitch before fastening and sealing.

Key Features

• Adjustable pitch range from 0 to 6/12 suits a wide variety of residential roof slopes
• Galvanized steel construction provides corrosion resistance for outdoor roof installations
• 12-inch nominal size matches standard gas vent pipe diameters
• 18-inch length delivers adequate flashing coverage over the roof deck surface
• Field-adjustable base simplifies installation without cutting or fabricating custom flashing

Compatibility

Designed as an OEM-style replacement or new-installation flashing for 12-inch gas vent pipe systems on residential and light commercial roofs with pitches from 0 to 6/12.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber as part of a gas venting system roughed in per the International Fuel Gas Code (IFGC). The flashing should be slid over the vent pipe before the pipe is secured at the roof deck, then adjusted to match the roof pitch and fastened according to local roofing requirements. All penetrations should be sealed with a roofing-grade sealant compatible with metal flashing to prevent water infiltration. Do not compress or distort the flashing base in a way that creates gaps between the flashing and the roof surface.

Technical Specifications

• Size: 12 inches
• Length: 18 inches
• Material: Steel
• Finish: Galvanized
• Pitch Range: 0 to 6/12

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 12rf