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Rockwool Tube - 1000mm long 125mm (90-RPS-125)

National Flues proudly presents the Rockwool Tube – a top-notch insulation solution designed for flue liners, chimney insulation, and high-performance rockwool insulation tube applications. Engineered for excellence, this product ensures your chimney remains efficient, safe, and properly insulated against condensation and high operating temperatures. Read more...
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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

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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: sales@nationalflues.com

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

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
Length1000mm
Diameter125mm
MaterialHigh-grade Rock Wool
Temperature RatingUp to 500°C
Compatible Liner Sizes125mm, 150mm, 200mm (Trim for 175mm)
Installation RequirementsFoil tape for joints, 50mm wide aluminium tape for reinforcement
For a secure installation, drop the Rockwool Tube in 1m sections as you insert your flue liner down the chimney. Use self-adhesive foil tape to seal every joint between sections, ensuring there are no gaps where condensation could form. For added durability, apply a 50mm wide aluminium tape over the joints. Always ensure the liner is properly cleaned and free from debris before installation. Caution should be taken near any flexible liners as this product is not suitable for Class 2 flexible liners used for gas and oil.

The Rockwool Tube is used to insulate flue liners, reducing the possibility of condensation within the flue, especially in chimneys exposed to harsh weather conditions.

The Rockwool Tube is manufactured from non-combustible rock wool, known for its high durability and resistance to vermin, fungi, mould, and bacteria.

The Rockwool Tube is available in three diameters to fit liner sizes of 125mm, 150mm, and 200mm. It can also be trimmed to fit a 175mm liner.

No, the Rockwool Tube is not suitable for Class 2 flexible liners, which are typically used for gas and oil.

The tube should be installed in 1m lengths as you drop the flue liner down the chimney. Secure each section with self-adhesive tape and reinforce with 50mm wide aluminium tape.

The Rockwool Tube is suitable for continuous operating temperatures of up to 500°C.

Yes, it is recommended to seal all joints of the Rockwool Tube with 50mm wide aluminium tape for added durability and performance.

 

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