What Is a Twin Wall Chimney System?

A twin wall chimney system is a pre-fabricated, factory-insulated flue system designed specifically for solid fuel appliances such as wood-burning stoves. The system consists of two concentric stainless steel pipes separated by an insulating layer, delivering superior safety, thermal performance, and installation versatility.

Key Benefits:

• Ideal for homes without a traditional masonry chimney
• Highly insulated to retain flue temperature and improve draw
• Safe for internal and external use
• Quick and clean to install with minimal structural disruption
• Suitable for new builds, extensions, or retrofit installations

These systems allow the flue to exit the stove and run either through internal rooms and loft spaces, or externally up an outside wall, before terminating safely above roof height.

Why We Specify Schiedel Chimney Systems

At Hot Box®, we have worked exclusively with Schiedel twin wall systems for over 15 years. We believe they remain the gold standard in pre-fabricated chimney technology.

Why Schiedel?

• Tested and certified to the highest European standards
• Precision-engineered jointing and locking systems
• Excellent insulation values for stable and efficient flue draw
• Long lifespan and robust weather resistance
• Comprehensive range of components for every installation scenario

We specify Schiedel because it’s what we would use in our own homes — and have done so since 2008.

Customisation Options

Hot Box® offers two finishes as standard for all twin wall installations:

• Black powder-coated for a sleek, modern look
• Stainless steel for a clean, industrial aesthetic

For clients seeking a more personalised finish, we can also offer powder coating in most RAL colours by request. This is ideal for:

• Contemporary architectural integrations
• Colour matching to cladding, doors, or windows
• Heritage properties requiring sympathetic design treatment

Simply let us know your vision, and our team will help you create a solution that complements your property.

Why Choose a Twin Wall System?

Compared to adapting or relining an old masonry chimney, a twin wall system is:

• Designed specifically for stove installation
• Factory-engineered for precision and performance
• Faster to install with less invasive building work
• More flexible in placement, allowing installation in kitchens, extensions, garden rooms, and more
• These systems can be routed both vertically and horizontally (with appropriate angles), making them incredibly adaptable to a wide range of properties.

Our Installation Service

Hot Box® Stoves Dundee provides a complete service including:

• Free home survey and flue assessment
• System design with CAD sketches where required
• Full supply and professional installation
• HETAS certification and Building Control registration
• Annual service and maintenance plans

Our experienced, HETAS-registered team ensures every detail is delivered with care and precision. 

Book a Survey Today

If you’re considering a wood-burning stove and your property lacks a chimney, a twin wall chimney system from Hot Box® is the smartest solution.

Hot Box® Stoves Dundee — The Trusted Name for Twin Wall Chimney Systems in Scotland
Crafted for performance. Installed with precision. Finished to suit your home.