Long Roof Support - Ø 125
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

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 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 | |
---|---|
SKU | 15-125-066 |
Diameter | 125 mm |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Insulation | High-density compressed rockwool |
Approvals | HETAS, CE |
Standards | EN1856-1 T600, T200 |
Distance To Combustibles | TWPro 50mm, KC 60mm |
Suitable Fuels | Wood, Oil, Gas, Low sulphur coal |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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.
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National Flues Ltd Verdict
The Long Roof Support - Ø 125 is one of our top-rated products, known for its robust construction and ease of installation. Ideal for both retail and trade customers, we rarely get beaten on price and offer secure online payments and reliable nationwide delivery.
The Long Roof Support - Ø 125 is designed to provide a stable and secure fixing for a chimney flue system, ensuring safe and efficient operation.
National Flues is a leading supplier of fireplaces and flues across the UK. Known for competitive pricing, reliable delivery, and an extensive range of products, we cater to both retail and trade customers.
