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Heavy Duty Roof Support - Ø 125 (15-125-167)

National Flues offers the Heavy Duty Roof Support - Ø 125, a premium, robust solution for chimney flue installations. Designed to serve solid fuel, gas, and oil appliance requirements, this support is not only HETAS Approved and CE marked but also meets EN1856-1 standards, making it one of the most reliable options in chimney accessories. Enjoy the benefits of superior stability and safety with our high-quality, easy-to-install flue support system.
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£41.99
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At a Glance

  • Robust construction with heavy-duty materials
  • 304 Stainless Steel outer skin & 316L Stainless Steel inner skin (0.40mm thick)
  • High-density compressed rockwool insulation (200 kg/m³)
  • Fully HETAS Approved and CE marked
  • Easy installation using a Locking Band
  • Provides superior chimney flue stability and additional support compared to standard models

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

We Won't Be Beaten On Price

At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
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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 Heavy Duty Roof Support - Ø 125 is designed to offer robust stability for flue installations on solid fuel, gas, and oil appliances such as woodstoves, gas coal effect fires, and boilers. Constructed with a 304 grade stainless steel outer skin and a 316 grade stainless steel inner skin, both 0.4 mm thick, it promises exceptional durability. The compressed rockwool insulation provides high-density protection at 200 kg/m³.

This essential component maintains a safe distance from combustibles, ensuring safe installation with 50mm clearance for TWPro and 60mm for KC versions. Fully HETAS Approved and CE marked, its designations TWPro EN1856-1 T600 N1 W V2 L50040 G50 and others ensure compliance with safety standards. Easy to install, simply secure the TWPro Twin Wall Insulated Chimney parts together with a Locking Band, and maintain safety distances from combustible materials.

SKU: 15-125-167

Technical Specifications
SKU15-125-167
DimensionsØ 125mm
Inner Material316L Stainless Steel (0.40mm thick)
Outer Material304 Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool (200 kg/m³)
Clearance50mm (TWPro) / 60mm (KC)
ApprovalsHETAS, CE
DesignationsEN1856-1 T600 N1 W V2 L50040 TWPro G50/ KC G60
Installation MethodRotates on 2 screws, secured with a Locking Band to rafters
• Ensure that the roof support is positioned directly above the chimney flue path. • Rotate the support into position using the 2 secure screws provided. • Attach firmly to the roof rafters, using the Locking Band to secure the TWPro Twin Wall Insulated Chimney parts together. • Maintain the minimum clearance distances: TWPro requires a 50mm clearance from combustibles, while KC versions need 60mm. • Always follow all manufacturer instructions and take necessary precautions when working at heights.

It is suitable for solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, and boilers.

The outer skin is made from 304 grade stainless steel, the inner skin from 316 grade stainless steel, both with a thickness of 0.4 mm, and it features compressed rockwool insulation at 200 kg/m³ density.

Yes, it is fully HETAS Approved and CE marked, meeting stringent safety and quality standards.

The TWPro Twin Wall Insulated Chimney parts are secured together using a Locking Band, ensuring a robust and secure installation.

For TWPro, maintain a 50mm distance from combustibles. For KC versions, maintain a 60mm distance from combustibles.

The roof support rotates on 2 screws and attaches to the rafters in your roof space, providing a fixed support before the flue exits the building structure.

The larger support plates and robust construction materials provide superior strength and stability compared to standard models, ensuring your flue system remains securely in place.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. If you need faster stove or fireplace delivery please give us a call. We can often 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. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Price Match Guarantee +

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.

Read our review in our Heavy Duty Roof Support - Ø 125 buyers guide

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