Rockwool Tube - 1000mm long 125mm
At a Glance
- - Durable, high-grade rock wool construction
- - Withstands continuous operating temperatures up to 500°C
- - Minimises condensation, mould, and vermin risks
- - Versatile sizing: fits 125mm, 150mm, 200mm liners; can be trimmed for 175mm
- - Quick and secure installation with recommended foil and aluminium tapes

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 Rockwool Tube, measuring 1000mm in length and 125mm in diameter, is an essential component for insulating your flue liner. This highly durable, non-combustible tube is crafted from top-grade rock wool. Not only does it help in reducing the likelihood of condensation within the flue, but it also withstands continuous operating temperatures up to 500°C.
Additionally, it is non-sustaining to vermin and resistant to fungi, mould, and bacteria growth, providing a clean and safe solution for your chimney. Available in various sizes to fit 125mm (5 inches), 150mm (6 inches), and 200mm (8 inches) chimney liners, the Rockwool Tube can be easily trimmed for a 175mm (7 inches) liner. For secure installation, use foil tape for all joints, and for added longevity, apply 50mm wide aluminium tape.
Note: This product is not suitable for Class 2 flexible liners (gas and oil liners).
SKU: 90-RPS-125
Technical Specifications | |
---|---|
Length | 1000mm |
Diameter | 125mm |
Material | High-grade Rock Wool |
Temperature Rating | Up to 500u00b0C |
Compatible Liner Sizes | 125mm, 150mm, 200mm (Trim for 175mm) |
Installation Requirements | Foil tape for joints, 50mm wide aluminium tape for reinforcement |
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
At National Flues, we strongly recommend the Rockwool Tube for its exceptional insulation properties and durability. This product is perfect for chimney installations exposed to severe weather. With our reliable delivery service across the UK and excellent trade accounts, you won't find a better offer.
The Rockwool Tube is designed to provide effective insulation for flue liners, reducing condensation and enhancing the efficiency and safety of chimney systems.
National Flues is a leading supplier of fireplaces and flues across the UK, known for unbeatable prices, reliable delivery, and excellent customer service for both retail and trade customers.
