Answering the common buying question: a storm collar protects your chimney flashing by sealing around the flue pipe and keeping rain out. This article highlights five reliable storm collars suited for various pipe sizes and brands, helping you choose the right fit for AllFuel HST, Imperial, and Fireside Chimney setups. Best for homeowners tackling retrofits, new installations, or upgrades to weatherproof chimney outlets. The included quick-reference table shows key compatibility and sizing at a glance.
| Product | |||
|---|---|---|---|
| AllFuel HST Storm Collar for 6″ | 6″ outer | 304 Stainless Steel | AllFuel HST Class-A systems |
| Imperial Galvanized Storm Collar, 8″ | 8″ | Galvanized steel | General purpose residential use |
| Imperial Galvanized Storm Collar, 6″ | 6″ | Galvanized steel | Small-diameter chimney runs |
| Fireside Stainless Steel Storm Collar, 8″ | 8″ | 304 Stainless Steel | Weatherproof, long-lasting protection |
| AllFuel HST Storm Collar for 8″ ID | 8″ inner diameter | 304 Stainless Steel | AllFuel HST Class-A double-wall pipes |
AllFuel HST Storm Collar for 6″ Diameter 304 Stainless Steel
Best for AllFuel HST Class-A double-wall chimney systems. This storm collar is compatible with AllFuel HST pipes and provides corrosion resistance with 304 stainless steel. It is designed to seal the installation above flashing to prevent water intrusion. Suitable for new constructions or retrofits where AllFuel HST components are used exclusively.
Who it’s best for: Homeowners using AllFuel HST Class-A ducting and installers prioritizing corrosion resistance and a dedicated-brand fit. Caution: Not compatible with non-AllFuel class-A pipes, which can compromise seal integrity.
Imperial United States HDW/U S HA Galvanized Storm Collar, 8″
Better for general residential installations needing a straightforward galvanized option. This Imperial storm collar provides a robust seal above flashing for standard chimney systems. It’s a practical choice when cost, availability, and ease of installation are primary concerns. Limitation: Galvanized steel may not offer the same corrosion resistance as stainless steel in coastal or high-moisture environments.
Imperial United States HDW/U S HA Galvanized Storm Collar, 6″
The six-inch galvanized option is well-suited for smaller-diameter chimney runs. It’s a practical pick when your project uses 6″ piping and cost-effective materials are a priority. Caution: As with any galvanized product, consider environmental exposure; heavy moisture or salt air can accelerate corrosion over time compared with stainless steel.
Fireside Chimney Supply Stainless Steel Storm Collar | 8 Inch
Best for weatherproofing an 8″ chimney system with stainless steel needs. This collar uses 24-gauge 304 stainless steel, offering durability against the elements and long-term corrosion resistance. It’s designed to shield the pipe opening from rain and moisture, supporting a sealed venting system. Consider whether your system requires stainless steel versus galvanized for your climate.
Fireside Chimney Supply Stainless Steel Storm Collar | 7 Inch
This 7″ storm collar offers a fit for 4″ pipe systems within a broader range of 3″ to 17″ collars. It provides stainless steel protection against weather-related wear and helps ensure a tight seal around the flashing. Best for mid-size pipes where a stainless option is preferred for durability and longevity. Limitation: If your chimney diameter differs from 7″, this collar may not provide an ideal fit without modification.
AllFuelHST Storm Collar for 8″ Inner Diameter
Best for AllFuel HST Class-A double-wall pipes with an 8″ inner diameter. The stainless steel construction provides corrosion resistance, and the collar is installed above flashing to seal the installation. Use this when your system specifies AllFuel HST, and ensure compatibility with the inner diameter. Caution: Not compatible with non-AllFuel class-A pipes, which could compromise performance.
Fireside Chimney Supply Stainless Steel Storm Collar | 11 Inch
Best for large-diameter pipe configurations or when a longer collar is preferred for enhanced water shedding. This 11″ storm collar is crafted from 304 stainless steel for durability and weather resistance. It’s suitable for premium installations requiring robust weatherproofing. Limitation: Larger collars may not fit smaller pipe systems without adapting the flange or flashing kit.
Buying Guide: Key Purchase Considerations
- Compatibility: Match the collar to your chimney pipe diameter and brand. Some collars are brand-specific (AllFuel HST) and cannot be used with other class-A pipes.
- Material: Stainless steel (304) offers superior corrosion resistance, especially in coastal or humid environments. Galvanized collars are cost-effective but may corrode faster over time.
- Diameter and fit: Sizes range from 6″ to 11″ collars and beyond. Ensure the collar fits above the flashing and around the pipe with a snug seal.
- Climate considerations: In harsh weather or salt-laden air, stainless steel is generally preferable for longevity.
- Installation: Look for collars that are easy to install with standard flashing kits and provide a rain-deflecting seal.
Frequently Asked Questions
- What is a storm collar and why do I need one? A storm collar seals around the chimney pipe above the flashing to prevent water intrusion and protect the venting system.
- What material should I choose? Stainless steel (304) offers better corrosion resistance than galvanized steel, especially in damp or coastal areas.
- Can I mix brands? Brand-specific class-A pipe systems often require matching collars for a proper seal; mixing may compromise compatibility.
- What diameter collar do I need? Measure the outer diameter of the pipe or the collar size recommended by your chimney manufacturer to ensure a proper fit.
- Is a larger collar better? A properly sized collar that seals well around the pipe is best. An oversized collar may not seal correctly and could trap moisture.
- Do storm collars require professional installation? Some homeowners install them with flashing kits; for complex chimneys or uncertain fit, hiring a pro ensures proper sealing.