Ips gb3 Galvanized No-caulk Roof Flashing 3 Inch

Product Description

The IPS gb3 is a galvanized steel no-caulk roof flashing designed for watertight sealing around 3-inch plumbing vent pipe penetrations through residential roofing assemblies. It includes an elastomeric collar that flexes with roof movement and thermal expansion, eliminating the need for caulk or additional sealants at installation. The elastomer collar provides long-term UV and ozone resistance, reducing the chance of seal degradation over time. Plumbers and roofing professionals install this flashing as part of standard drain-waste-vent system rough-in and repair work.

This flashing is suited for residential plumbing vent applications where a 3-inch vent pipe exits through the roof deck. The no-caulk design works with standard roofing materials and is compatible with 3-inch vent pipes as used in typical DWV system layouts. The galvanized steel base provides corrosion resistance in exterior roofing environments. Its low-profile footprint fits common residential roof pitches and integrates with standard shingle and roofing underlayment installations.

Key Features

• Galvanized steel construction for corrosion resistance in outdoor roofing conditions
• Includes elastomer collar for a flexible, no-caulk seal around 3-inch vent pipe
• UV and ozone-resistant elastomeric material reduces long-term maintenance needs
• No sealants required — collar adapts to roof movement and temperature cycling
• Domestic manufactured product from IPS Corporation

Compatibility

Designed for use with 3-inch vent pipes in residential plumbing venting applications, compatible with standard roofing materials and typical DWV vent pipe configurations.

Installation Notes

Installation is performed by licensed plumbers or qualified roofing contractors as part of DWV rough-in or repair service. Shut off water supply and ensure the work area is safe before beginning any pipe penetration work. Slide the flashing over the vent pipe and integrate the base flange under the roofing material per standard roofing practice — no caulk is required at the collar. Follow applicable local plumbing codes and IPC guidelines for vent pipe penetration and flashing requirements.