Stainless Steel Chimney Chase Cover | Custom Options

A chimney chase cover is a critical barrier that helps protect the interior of your chimney chase from rain, snow, debris, and wildlife. Many standard chase covers are made from galvanized steel, which can eventually rust and deteriorate after prolonged exposure to moisture. A damaged or rusted chimney chase cover can contribute to leaks, exterior staining, structural deterioration, and costly repairs.

Each custom stainless steel chimney chase cover is fabricated to your submitted specifications for a precise, watertight fit. Made from heavy-duty 24-gauge 304 stainless steel, the cover provides excellent resistance to rust, corrosion, and deterioration for dependable, long-term chimney chase protection.

Custom Stainless Steel Chimney Chase Cover Features

• Designed for Watertight Protection: Optional drip edges and diagonal creases help direct water away from the chimney chase, reduce water pooling, and protect the structure below.
• Heavy-Duty Construction: Each cover is fabricated from rigid 24-gauge 304 stainless steel for excellent corrosion resistance and structural durability. Thin-gauge or lightweight chase covers can be more susceptible to warping and water pooling, particularly across larger chimney chases.
• Helps Keep Wildlife Out: A properly measured chase cover helps close exposed gaps around the chimney chase and reduces opportunities for birds, squirrels, raccoons, and other wildlife to enter the structure.
• Custom-Made for a Precise Fit: Customize the overall size, skirt length, flue opening size and placement, and collar height. Optional powder-coated finishes are also available in multiple colors to coordinate with the exterior of the home.
• Lifetime Warranty: Backed by a lifetime warranty, our stainless steel chimney chase covers provide durable, long-term protection for your chimney chase.

Required: Complete the Custom Chase Cover Worksheet before submitting your order.

Why Replace a Chimney Chase Cover?

A deteriorated chimney chase cover can allow moisture to enter the chase and reach framing, insulation, chimney components, drywall, and surrounding building materials. Replacing a rusted, warped, or damaged cover can help prevent water intrusion before it leads to more extensive chimney or home repairs.

Signs Your Chimney Chase Cover May Need Replacement

• Rust stains running down the chimney chase, roof, or siding
• Standing water or visible pooling on the cover
• Warped, bowed, or sagging metal
• Visible rust holes or corrosion
• Water stains or leaks near the fireplace
• Deteriorated sealant around flue collars
• Loose or damaged edges
• Evidence of wildlife entering the chimney chase

Custom Chimney Chase Cover Specifications

Why Choose 304 Stainless Steel?

Heavy-duty 24-gauge 304 stainless steel provides greater corrosion resistance and structural durability than standard galvanized steel. Stainless steel is well suited for long-term outdoor exposure and helps the chase cover maintain its shape while directing water away from the chimney chase.

Because every cover is made to order, you receive a replacement chase cover fabricated to your exact submitted chimney chase dimensions and flue locations instead of relying on a standard stock size that may not provide a perfect fit.

304 Stainless Steel vs. Galvanized Steel Chase Covers

Custom Fabrication Options

Every chimney chase is different. Your cover can be fabricated around the dimensions and configuration provided on the completed Chase Cover Worksheet.

• Overall length and width
• Up to three flue openings
• Custom flue opening sizes
• Custom flue opening placement
• Custom collar height
• Custom skirt length
• Optional diagonal creases
• Optional drip edges
• Available powder-coated colors

How to Measure for a Custom Chimney Chase Cover

Do not assume that opposite sides of the chimney chase are equal. Measure all four outside edges individually to the nearest 1/8 inch.

Step 1: Measure the Length and Width

Compare the two length measurements and record the longer one. Compare the two width measurements and record the longer one. Add 1/4 inch to both final dimensions to provide the necessary manufacturing tolerance so the cover can slide into place.

Step 2: Measure Flue Openings and Placement

Count the flue pipes. For each round metal pipe, measure the exact outside diameter and add 1/2 inch for clearance. Measure inward from all four outside edges of the chimney chase to the edge of each pipe so every opening can be placed accurately.

Careful measurements are essential because each cover is made to order using the information provided on the Chase Cover Worksheet.

Installation Considerations

Proper installation and sealing around flue collars, fasteners, and other penetrations are essential for long-term weather protection. Installation must follow the requirements of the chimney, fireplace, venting system, and applicable building codes.

Verify all measurements, clearances, collar requirements, and installation materials before placing an order. Professional installation is recommended when the installer is unfamiliar with chimney chase covers or the applicable venting-system requirements.

Production and Shipping

Standard stainless steel chase covers are typically fabricated and ready to ship within 7–10 business days after all measurements are received and confirmed. Powder-coated finishes require approximately one additional week.

Why Buy From Fireside Chimney Supply?

We provide made-to-order chimney chase covers fabricated from heavy-duty 24-gauge 304 stainless steel and copper. Each cover is built using the exact measurements supplied on your completed worksheet, and each cover comes backed by a lifetime warranty.

• Custom fabricated to order
• Heavy-duty 24-gauge 304 stainless steel
• Up to three custom flue openings
• Optional drip edges and diagonal creases
• Powder-coated finishes available
• Typical 7–10 business-day production time
• Lifetime warranty

Custom Chimney Chase Cover FAQs

Why should I choose a 304 stainless steel chimney chase cover instead of galvanized steel?

Galvanized steel chase covers can eventually rust after prolonged exposure to moisture, potentially leading to leaks and exterior staining. Heavy-duty 24-gauge 304 stainless steel provides greater corrosion resistance and structural durability for long-term chimney chase protection.

What gauge stainless steel is used for the chase cover?

Each custom chase cover is fabricated from heavy-duty 24-gauge 304 stainless steel.

Can I customize the holes, skirt length, and collar height?

Yes. You can customize the number of flue openings up to three, opening sizes, opening placement, collar height, and skirt length. Three inches is the standard skirt length. Optional diagonal creases, drip edges, and powder-coated finishes are also available.

Can a rusted chimney chase cover cause leaks?

Yes. Rust holes, failed seams, standing water, damaged collars, and deteriorated sealant can allow moisture to enter the chimney chase. Water intrusion can damage chimney components, framing, insulation, drywall, and nearby building materials.

How do I know what size chimney chase cover I need?

Measure all four outside edges of the chimney chase individually to the nearest 1/8 inch. Record the longer of the two length measurements and the longer of the two width measurements, then add 1/4 inch to each final dimension. Complete measurements and flue-location details must be submitted on the Chase Cover Worksheet.

Can the chase cover accommodate multiple flues?

Yes. The cover can be fabricated with up to three custom flue openings based on the sizes and locations provided on the completed worksheet.

Are powder-coated finishes available?

Yes. Powder-coated finishes are available in multiple colors. Powder coating requires approximately one additional week of production time.

Does the custom stainless steel chimney chase cover include a warranty?

Yes. The custom stainless steel chimney chase cover is backed by a lifetime warranty.

How long does it take to fabricate and ship a custom chase cover?

Standard stainless steel chase covers are typically fabricated and ready to ship within 7–10 business days after all measurements are received and confirmed. Powder-coated finishes require approximately one additional week.

Will a new chase cover help keep birds and animals out?

A properly measured chase cover helps close exposed gaps around the chimney chase and reduces opportunities for wildlife intrusion. Individual flue openings may still require appropriate caps or termination components.

Related Chimney Chase Cover Resources

Learn more in our complete chimney chase cover guide .