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A Closer Look at Chimney Double Wall Pipe: Stainless Steel vs. Galvalume

June 30, 2023

Chimney double wall pipes play a crucial role in venting smoke and gases safely out of homes and buildings. When it comes to selecting the right material for your chimney double wall pipe, two popular options are stainless steel and Galvalume. Both materials offer their own set of advantages and considerations. In this article, we will delve into the characteristics of each material to help you make an informed decision for your chimney system.

Stainless Steel:

Stainless steel is widely recognized for its durability, corrosion resistance, and longevity. It is an alloy composed of iron, carbon, and chromium, with the addition of other elements for enhanced strength and resistance to high temperatures. Here are some key points to consider about stainless steel chimney double wall pipes:

Corrosion Resistance: Stainless steel exhibits excellent resistance to corrosion, making it suitable for various environments, including coastal areas with high humidity and corrosive elements.

Longevity: Stainless steel pipes are known for their long lifespan, offering reliable performance and minimal maintenance requirements over the years.

High Temperature Resistance: Stainless steel is capable of withstanding high temperatures, making it a suitable choice for wood-burning and gas-burning applications.

Aesthetics: Stainless steel pipes often have a sleek and polished appearance, which can complement the overall look of your home or building.


Galvalume, on the other hand, is a coated steel product that consists of a combination of aluminum, zinc, and silicon. It offers its own unique set of features and benefits for chimney double wall pipes:

Cost-Effective: Galvalume tends to be more cost-effective than stainless steel, making it an attractive option for those on a budget.

High Heat Reflectivity: Galvalume has high heat reflectivity, which can help reduce the amount of heat transferred to the outer wall of the chimney pipe, thus minimizing the risk of exterior surface discoloration or heat-related issues.

Good Corrosion Resistance: Although not as corrosion-resistant as stainless steel, Galvalume still provides adequate protection against rust and corrosion in most environments.

Lightweight: Galvalume is relatively lightweight, making it easier to handle during installation.

Choosing the Right Material:

Selecting between stainless steel and Galvalume for your chimney double wall pipe will depend on various factors, including your specific needs, budget, and environmental conditions. Here are some points to consider when making your decision:

Application: Determine the type of fuel you will be using and the temperature requirements of your chimney system.

Climate and Environment: Consider the prevailing weather conditions and the presence of corrosive elements in your area.

Longevity vs. Cost: Stainless steel typically offers greater longevity but comes at a higher price point, whereas Galvalume provides a more budget-friendly option.

Aesthetics: If visual appeal is important to you, stainless steel might be the preferred choice due to its polished appearance.

Choosing the right material for your chimney double wall pipe is a critical decision to ensure the safe and efficient operation of your chimney system. Stainless steel offers exceptional durability, corrosion resistance, and longevity, while Galvalume provides a cost-effective alternative with good heat reflectivity. Consider your specific requirements, budget, and environmental conditions to make an informed choice that suits your needs. Consult with professionals or chimney experts for personalized advice tailored to your unique situation.

Chimney Liner Depot is the go-to company for Galvalume and stainless steel double wall pipes, offering the best prices on factory-owned products with no middlemen involved, ensuring high-quality materials for your chimney needs.
Spring Hill Chimney, a full-service chimney company, is dedicated to providing exceptional customer care. Contact us today to receive a free quote for double wall pipe installation or repair, and experience our commitment to your satisfaction.
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