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Joiner - Ø 300
The Joiner - Ø 300 from National Flues is a high-performance accessory engineered for MI-FLEX multi-fuel flue liners. Designed to deliver a seamless connection within your chimney system, this joiner stands out as a reliable and efficient solution for extending your flue installation. An essential c... More...
The Joiner - Ø 300 from National Flues is a high-performance accessory engineered for MI-FLEX multi-fuel flue liners. Designed to deliver a seamless connection within your chimney system, this joiner stands out as a reliable and efficient solution for extending your flue installation. An essential component for full-system setups, it ensures compliance and robust performance, making it a must-have in any modern chimney installation. Less...
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At a Glance
- Seamless connection for MI-FLEX multi-fuel flue liners
- Constructed from robust 316L stainless steel
- Withstands temperatures up to 600°C
- Compatible with wood (with <20% moisture), oil, gas, and smokeless coal
- Fully compliant with Building Regulations Document J
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£95.99
Including VAT
Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.
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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.
The Joiner - Ø 300 is a crucial accessory designed to join two pieces of MI-FLEX multi-fuel flexible flue liner seamlessly. Perfectly crafted to complement MI-FLEX 316 and 904 flexible flue liners, this joiner ensures a continuous and secure connection for an efficient full-system chimney. Adhering to Building Regulations Document J, this joiner must be used within a completely enclosed masonry chimney – timber or plasterboard enclosures are not permissible.
Capable of handling temperatures up to 600°C, it is ideal for wood with less than 20% moisture, smokeless coal, gas, and oil. When your chimney liner length exceeds the maximum available flex, the Joiner - Ø 300 offers the perfect solution, though it must not be used with gas liners. Maintenance is straightforward, requiring professional sweeping, ideally by a HETAS registered sweep, at least twice a year for solid fuel applications.
SKU: 20-300-J
Technical Specifications
SKU
20-300-J
Material
316L Stainless Steel
Colour Finish
Natural / Stainless Steel
Temperature Rating
Up to 600u00b0C
Fuel Compatibility
Wood (<20% moisture), Oil, Gas, Smokeless Coal
Certifications
HETAS, CE
Compliance
Building Regulations Document J
Installation Warning: The Joiner - Ø 300 must only be installed within a fully enclosed masonry chimney. It is imperative that timber or plasterboard enclosures are not used. This component is designed exclusively for connecting MI-FLEX multi-fuel flexible flue liners and must never be used with gas liners. For optimal safety and performance, professional installation is strongly recommended, and regular maintenance by a HETAS registered sweep should be arranged at least twice per heating season.
No, the Joiner - Ø 300 must not be used with gas liners.
It is suitable for wood with less than 20% moisture, smokeless coal, gas, and oil.
The joiner can handle temperatures up to 600°C (T600 designation).
Yes, according to Building Regulations Document J, a flexible flue liner must be enclosed within a masonry chimney; non-masonry enclosures are not acceptable.
The chimney system should be swept at least twice a year, ideally at the end of the heating season and before the start of the next season.
Sweeping should be done by a competent person, preferably a HETAS registered sweep.
No, chemical cleaners or mild steel tools should not be used on stainless steel chimneys.
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.
Compatible and other products that may be of interest...
When planning a chimney installation, every component plays a critical role in ensuring safety, efficiency, and longevity. The Joiner - Ø 300 is an essential accessory that bridges the gap between flue liner sections, offering an impeccable method for connecting MI-FLEX multi-fuel flexible flue liners. In this guide, we will explore the features, benefits, and installation details of the Joiner - Ø 300, while addressing common concerns and highlighting the importance of using complementary accessories.
Product Overview
The Joiner - Ø 300 is manufactured from high-grade 316L stainless steel, designed to provide exceptional durability and resistance to corrosion. It is engineered for use in environments where temperatures can soar up to 600°C, ensuring that even under the most demanding conditions, your chimney system remains secure and efficient. Suitable for use with wood (bearing less than 20% moisture), oil, gas, and smokeless coal, this joiner is versatile enough to handle a range of fuel types. Importantly, its design complies with Building Regulations Document J, a mark of quality and safety that every homeowner and professional installer can trust.
Features and Benefits
One of the primary strengths of the Joiner - Ø 300 lies in its seamless connection capability. By bridging sections of the MI-FLEX flue liner, it creates a continuous, leak-proof system that maximises thermal efficiency and minimises the risk of downdrafts or heat loss. Durability is key in chimney systems, and the use of 316L stainless steel ensures that the joiner will stand the test of time, even in harsh operating environments. Moreover, its ability to operate efficiently at high temperatures means that it will continue to perform safely and reliably throughout its lifespan.
Key Benefits Include:
- A secure and continuous flue system that enhances overall performance
- High durability due to the premium quality material used in its construction
- Adaptability to various fuel types, offering flexibility in installation
- Compliance with stringent regulatory standards for peace of mind
Installation and Compliance
Installing the Joiner - Ø 300 is straightforward, provided that the correct guidelines are followed. It is imperative to ensure that the joiner is only installed within a fully enclosed masonry chimney. This is a critical safety requirement, as non-masonry enclosures such as timber or plasterboard are not suitable for containing the high operational temperatures produced by your chimney system. Professional installation is recommended, particularly to ensure strict adherence to Building Regulations Document J. The joiner must be used exclusively with MI-FLEX multi-fuel flexible flue liners and should not be applied to gas liner systems. By following these installation protocols, you guarantee both the efficiency and the safety of your system.
Maintenance and Safety Guidelines
Regular maintenance of your chimney is essential for optimal performance and safety. It is advised that sweeping and inspections are carried out at least twice a year—preferably once at the end of the heating season and again before the next season begins. Seeking the expertise of a HETAS registered sweep ensures that your flue system is thoroughly cleaned and inspected, preventing potential blockages or performance issues. The robust nature of the Joiner - Ø 300 means that it requires minimal maintenance; however, ensuring that all related components are clean and free from soot buildup is vital to maintaining the system’s longevity.
Selecting the Right Accessories
Apart from the Joiner - Ø 300, there is a wide range of optional accessories available to further enhance your chimney installation. Accessories such as additional MI-FLEX connectors, flue liners, and specialised sealing products can optimise both the performance and the safety of your system. It is always beneficial to review the complete accessory range to ensure that every component of your chimney system is tailored to meet your specific needs. Investing in high-quality accessories not only improves system efficiency but also adds an extra layer of safety and compliance with current building regulations.
Overcoming Common Concerns
It is natural to have questions and concerns when it comes to the installation and operation of chimney systems. One common question is whether the joiner can be integrated with all types of liners; however, it is crucial to note that the Joiner - Ø 300 is designed for use solely with MI-FLEX multi-fuel flexible flue liners. Another concern often raised is the installation environment—certain materials such as timber or plasterboard do not provide the required safety for high-temperature operations, emphasising the need for a fully enclosed masonry design. By addressing these concerns proactively, homeowners and installers can approach the installation process with confidence and peace of mind.
Conclusion
The Joiner - Ø 300 is not only a technical solution but also a vital safety component in modern chimney systems. Its robust 316L stainless steel construction, high temperature tolerance, and strict adherence to Building Regulations Document J make it a premium choice for both residential and commercial installations. As you plan your next chimney project, consider integrating the Joiner - Ø 300 along with other recommended accessories to ensure the best possible outcome. With quality, compliance, and efficiency at the forefront, this joiner is designed to deliver reliable performance for years to come.
Invest in a superior chimney system by choosing components that stand the test of time and meet all safety standards. The installation of the Joiner - Ø 300 is a smart decision that not only enhances system performance but also ensures peace of mind when it comes to compliance and long-term durability. Every detail matters in a chimney installation, and selecting the right accessories helps create a system that is both efficient and safe.
Buy now or call 01670 206 999.
National Flues Ltd Verdict
The Joiner - Ø 300 is an essential component for extending our MI-FLEX multi-fuel flue liners. With exceptional build quality and reliable performance, it ensures a perfect fit for your flue system installation. National Flues delivers nationwide and serves both retail and trade customers.
The Joiner - Ø 300 is used to securely connect two sections of MI-FLEX multi-fuel flexible flue liners when the total length exceeds the maximum length of available flex, ensuring a continuous and efficient chimney system.
National Flues is a leading supplier of fireplaces and flues across the UK, known for competitive pricing and reliable nationwide delivery. Outstanding customer service for both retail and trade markets.
Secure your system’s integrity with the Joiner - Ø 300 – add to your cart now!
