Protect your roof line with the Imperial 4 in. D 26 Ga. Galvanized Steel Storm Collar. Designed to fit a 4-inch Type A vent, this collar creates a precise, durable seal around the vent pipe where it exits the roof. The galvanized 26-gauge steel delivers dependable rust resistance and long-lasting performance in outdoor conditions, giving you peace of mind through rain, snow, and wind-driven moisture. Packaged boxed for easy handling and storage, it’s a practical choice for both DIY projects and professional installations.
Key details that matter
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Diameter: 4 inches — compatible with standard 4" Type A vent pipes
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Material & gauge: Galvanized steel, 26 gauge — sturdy yet lightweight, with corrosion resistance for outdoor roof penetrations
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Vent type compatibility: Type A — specifically sized to work with common factory-built chimney systems
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Finish: Silver galvanization provides durable weatherproofing and a clean, low-profile look
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UL listing: No — suitable for installations where UL listing is not a requirement of the project
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Packaging: Boxed — convenient storage and protection on-site
Why this storm collar matters
Water intrusion at the roof-penetration point is one of the most common causes of ceiling stains, mold, and structural damage. The Imperial storm collar creates a tight seal around the vent pipe, working with your roof flashing to direct rain away from the penetration. Its 4-inch diameter makes it a practical, widely compatible choice for many residential fireplaces, stoves, and other appliances that use Type A venting. The galvanized finish stands up to weather, helping maintain roof integrity year after year.
Ideal for
- New installations where a 4" Type A vent passes through the roof
- Retrofits to replace aging or leaky collars around chimney pipes
- Seasonal maintenance to ensure a reliable weather seal around the vent
- Homeowners and professionals seeking a straightforward, box-packaged solution
Installation at a glance
- Confirm the vent pipe is 4 inches in diameter and compatible with Type A venting.
- Slide the storm collar over the vent pipe so the collar sits around the pipe at the roof line, with the bottom edge resting on the roof surface or flashing as recommended.
- Fasten the collar using corrosion-resistant screws into the surrounding substrate or framing as required by your roof assembly.
- Seal the seam or joints with exterior-grade, high-temperature sealant to reinforce the weatherproof barrier.
Care, longevity, and tips
Inspect the storm collar annually for signs of corrosion or loosening fasteners. If you notice wear or paint chipping, address promptly to maintain the integrity of the seal. Keep debris from accumulating around the collar’s edge, and if you live in an extremely harsh climate, consider re-sealing as part of routine roof maintenance to preserve the barrier against moisture.
Whether you’re finishing a new installation or upgrading an aging roof line, the Imperial 4 in. D 26 Ga. Galvanized Steel Storm Collar delivers a precise fit, durable weatherproofing, and straightforward installation for reliable, long-term protection around your Type A vent.
Ready to secure your vent with confidence? Add the Imperial 4 in. storm collar to your cart and safeguard your roof penetration today.
