Description
Tower Circular Flue Terminal Guards
The Tower Circular Flue Terminal Guards are designed to provide essential protection for flue terminals installed in accessible locations, ensuring compliance with BS 5440-1:2008 (Section 9.2.1) and UK Building Regulations. These guards are required wherever there is a risk of individuals coming into contact with a flue terminal, helping to prevent injury while allowing the safe discharge of combustion products.
In accordance with BS 5440-1:2008, a protective guard must be fitted when a flue terminal is positioned less than 2.1 metres above ground level, a balcony, or a flat roof that is accessible to people. For plume management installations, a guard is also required where the air inlet is below 2.0 metres in these accessible locations. Once installed, the guard must maintain a minimum clearance of 50mm from all parts of the flue terminal.
Tower terminal guards are available in a range of materials and finishes to suit different boiler types and environmental conditions. Zinc and passivated plated guards are available for non-condensing applications but are not suitable for condensing boilers, as acidic condensate can cause corrosion over time. For condensing boiler installations, plastic-coated polyethylene guards are recommended, offering improved resistance to corrosion, while stainless steel guards provide the highest level of durability and are suitable for condensing and non-condensing boilers, as well as gas, oil, and solid fuel systems.
High-level variants are available where additional protection is required, including models with mesh infill plates to enhance safety in exposed or frequently accessed locations.
The Tower Circular Flue Terminal Guard range is manufactured to meet current UK Building Regulations, including the requirements outlined in Approved Document J (Combustion Appliances and Fuel Storage Systems), ensuring safe installation practices and legal compliance in domestic heating systems.
Product Reference Key
Product codes use suffixes to identify material and configuration:
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No suffix: Zinc & passivated plated
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BR: Brown plastic coated
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HLBRM: High-level brown plastic coated with mesh infill plate
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SS: Stainless steel
Available Sizes and Variants
The Tower circular terminal guard range is available in multiple dimensions and finishes to suit different flue sizes and installation requirements, including compact, standard, and high-level designs in zinc-plated, plastic-coated, and stainless steel constructions. Model options include CGDK1, CGDK3, CGDK4, and CGDK6 series, with corresponding BR, HLBRM, and SS variants where applicable.
The Tower Circular Flue Terminal Guards provide a robust, regulation-compliant solution for protecting accessible flue terminals, offering installers a reliable choice that ensures safety, durability, and long-term performance in domestic heating installations.
Full dimensions, material options, and model compatibility details can be found in the specification tab above.


























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