Heavy Duty Roof Support - Ø 125
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.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
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).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
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 | |
---|---|
SKU | 15-125-167 |
Dimensions | Ø 125mm |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool (200 kg/m³) |
Clearance | 50mm (TWPro) / 60mm (KC) |
Approvals | HETAS, CE |
Designations | EN1856-1 T600 N1 W V2 L50040 TWPro G50/ KC G60 |
Installation Method | Rotates on 2 screws, secured with a Locking Band to rafters |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Heavy Duty Roof Support - Ø 125 is a must-have for any chimney flue installation. Offering exceptional strength and durability, it provides reliable support for your flue system. With quick delivery nationwide, National Flues ensures you get the highest quality product promptly, whether you're a retail or trade customer.
The Heavy Duty Roof Support - Ø 125 is used to securely support and stabilize chimney flue installations, ensuring safe and vertical passage through the roof.
National Flues is a leading supplier of fireplaces and flues in the UK, known for competitive pricing, reliable delivery, and serving both retail and trade customers with tailored solutions.
