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Long Roof Support - Ø 125 (15-125-066)

National Flues presents the Long Roof Support - Ø 125, a top-quality chimney flue support system engineered for both residential and trade applications. Constructed from premium stainless steel and insulated with high-density rockwool, this support is ideal for wood stoves, gas, and oil appliances. HETAS approved and CE marked, our product guarantees a safe and secure installation, making it an essential choice for anyone looking for performance and durability in chimney flue accessories.
The price you pay today £31.99
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At a Glance

    Robust construction with durable 304 and 316 grade stainless steel
    HETAS approved and CE marked for safety and regulatory compliance
    High-density compressed rockwool insulation for superior thermal performance
    Versatile application for solid fuel, gas, oil appliances, and low sulphur coal systems
    Secure and stable vertical support for chimney flue installations
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, June 9th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

Warranty & Returns +

All our products come with warranties and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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We will match any price, like-for-like, on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Long Roof Support - Ø 125mm is engineered to provide robust and secure support for your chimney flue system, especially designed for use with solid fuel and gas/oil appliances such as wood stoves, gas coal-effect fires, and boilers. Constructed with high-quality 304 and 316 grade stainless steel, this roof support demonstrates excellent durability against wear and thermal stress. The outer and inner skins are both 0.4mm thick and insulated with compressed rockwool of high density, ensuring efficient performance.

Approved by HETAS and CE marked, this roof support adheres to the stringent standards EN1856-1 T600 and T200, ensuring optimal safety and reliability. Ensure that you maintain a safe distance from combustible materials during installation, and secure the twin wall insulated chimney parts together with a locking band.

SKU: 15-125-066

Technical Specifications
SKU15-125-066
Diameter125 mm
Inner Material316L Stainless Steel (0.40mm thick)
Outer Material304 Stainless Steel (0.40mm thick)
InsulationHigh-density compressed rockwool
ApprovalsHETAS, CE
StandardsEN1856-1 T600, T200
Distance To CombustiblesTWPro 50mm, KC 60mm
Suitable FuelsWood, Oil, Gas, Low sulphur coal
• Securely attach the roof support to the roof rafters within the loft space to create a stable base for the flue system. • Ensure that the installation maintains the required clearances from combustible materials; 50mm for TWPro systems and 60mm for KC systems. • The twin wall insulated chimney parts should be fastened together using a locking band, as specified in the installation guide. • While the installation process is outlined in detailed instructions available from our website, it is advisable to consult or hire a professional installer to guarantee compliance with local building regulations and safety standards.

The Long Roof Support is suitable for solid fuel, gas, and oil appliances, including wood stoves, gas coal-effect fires, and boilers.

The roof support is made from 304 grade stainless steel for the outer skin and 316 grade stainless steel for the inner skin, both with a thickness of 0.4mm, and insulated with compressed rockwool.

Yes, the Long Roof Support is HETAS approved and CE marked, meeting EN1856-1 T600 and T200 standards.

The roof support is attached to the rafters in the roof space, providing a secure fixed support. The twin wall insulated chimney parts are then secured with a locking band. Always maintain the required distance from any combustible materials.

The required distance to combustibles is 50mm for TWPro and 60mm for KC systems.

While the installation guide provides thorough instructions, we recommend professional installation to ensure safety and compliance with applicable regulations.

Detailed loading data can be found in our installation guides, available on our website.

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