Key Performance Features

• Built-in Backdraft Damper – Features a gravity-assisted flapper that opens for exhaust and snaps shut to prevent cold drafts, rain, and pests from entering your home.
• Removable Pest Guard – Includes a 1/4" mesh screen that keeps birds, rodents, and large insects out of your ductwork. Easy to "pop out" for periodic cleaning.
• Oversized Sealing Flange – The 10.5" x 10.5" wide base provides an ample surface for roofing cement and shingle overlap, ensuring a 100% watertight seal.
• Corrosion-Resistant Coating – Hot-dipped galvanized finish provides superior rust protection, even in coastal or high-moisture environments.
• Universal Pitch Compatibility – Designed to work seamlessly on roof pitches ranging from 3/12 to 12/12.

Technical Specifications

Installation Steps for a Watertight Seal

1. Opening: Mark and cut a 4-1/4" hole through the roof sheathing at the desired location.
2. Connection: Slide the vent stem into the ductwork from the attic side. Ensure a secure connection using a worm gear clamp or foil tape.
3. Sealing: Apply a generous bead of high-grade roofing sealant or "bull" cement to the underside of the 10.5" flange.
4. Securing: Nail the flange to the roof deck using galvanized roofing nails.
5. Shingling: Install shingles over the top and side portions of the flange, leaving the bottom edge exposed to allow for proper water drainage (shedding).
6. Inspection: Ensure the internal damper moves freely and is not obstructed by roofing debris.

Why Choose Galvanized Steel?

In the harsh environment of a rooftop, materials matter. Plastic vents become brittle and crack after a few summers, and aluminum can easily dent or crush under ice. This Galvanized Steel Vent Cap is the "Gold Standard" for roofing contractors. It offers the rigid structural integrity needed to maintain its shape and function for decades, protecting your home from moisture damage and unwanted guests.