Welcome to National Flues Ltd! We use cookies to power essential features and personalise your experience, ensuring a smooth, secure, and ever-improving journey on our website. Your privacy is our priority—cookies help us remember your preferences and enhance your visit without compromising your data. By continuing to browse, you agree to our use of cookies as detailed in our Cookie Policy. Enjoy your visit and thank you for choosing us!
Cookie Preferences
We use different types of cookies for various purposes. Please select which you allow:
Joiner - Ø 200
National Flues presents the superior Joiner - Ø 200, a premium connector for MI-FLEX multi-fuel flexible flue liners. Designed for wood-burning, smokeless coal, oil, and gas applications, this essential accessory ensures a secure and efficient chimney system. Enhance your fireplace installation with... More...
National Flues presents the superior Joiner - Ø 200, a premium connector for MI-FLEX multi-fuel flexible flue liners. Designed for wood-burning, smokeless coal, oil, and gas applications, this essential accessory ensures a secure and efficient chimney system. Enhance your fireplace installation with a product that upholds top UK safety standards and building regulations, delivering unmatched performance and reliability. Less...
Hover to Zoom / Click for Gallery
Low Stock! – Order Now
At a Glance
Essential accessory for connecting MI-FLEX multi-fuel liners
Made from durable 316L stainless steel for long-lasting performance
Compatible with wood (below 20% moisture), smokeless coal, gas, and oil
Fully compliant with Building Regulations Document J
Designed exclusively for use within masonry chimneys
Now only
£31.99
Including VAT
Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.
×
Email Product
Enter your email address to send the product details:
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 200 is an essential accessory designed for use with MI-FLEX 316L and 904 flexible flue liners. This joiner is crucial when the length of your chimney liner exceeds the maximum available flex length, allowing two pieces of multi-fuel liner to connect seamlessly. It is critical to note that this joiner must not be used with gas liners.
Compliant with Building Regulations Document J, the MI-FLEX system is only suitable for installation within a masonry chimney – non-masonry enclosures like timber or plasterboard are not acceptable. Rated for use with appliances up to 600°C (T600 designation), it is ideal for wood with less than 20% moisture, smokeless coal, gas, and oil. Regular sweeping and maintenance, preferably by HETAS registered professionals, are essential to ensure longevity and safety.
Solid fuel appliances require more frequent cleaning to prevent build-up and blockages.
Ensure that the Joiner - Ø 200 is installed within a masonry chimney as part of a MI-FLEX multi-fuel liner system. Before installation, verify that the chimney liner does not exceed the maximum flexible length available and that each component is compatible. Important: This joiner must not be used with gas liners. Follow the manufacturer’s guidelines strictly and have your installation inspected by a HETAS registered professional. Regular chimney sweeping and maintenance are crucial—especially for solid fuel appliances—to prevent build-up or blockages, ensuring safe operation over time. Always keep the installation area free of combustibles and adhere to all local building regulations.
No, the Joiner - Ø 200 is not suitable for use with gas liners. It is designed specifically for multi-fuel liners.
This joiner can be used with wood (below 20% moisture), smokeless coal, gas, and oil.
Yes, it complies with Building Regulations Document J, which requires that a flexible flue liner be installed fully enclosed inside a masonry chimney.
It’s recommended to sweep chimneys serving solid fuel appliances at least twice a year – once at the end of the heating season and once before the start of the next.
Sweeping and maintenance should be conducted by a competent person. For solid fuel applications, HETAS registered professionals are recommended.
No, you should not use chemical cleaners or mild steel tools on stainless steel chimneys. Regular sweeping is sufficient.
Regular inspections are recommended, especially before and after the heating season, to ensure there are no blockages or deposits such as bird nests.
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 your chimney installation, it is crucial to select components that not only meet safety standards but also enhance the overall performance of your flue system. The Joiner - Ø 200 from National Flues is specifically designed for connecting MI-FLEX multi-fuel flexible flue liners when the liner length exceeds the maximum flex available. In this extensive guide, we will explore the unique features, key benefits, installation details, maintenance tips, and frequently asked questions regarding this indispensable accessory.
Understanding the Product
The Joiner - Ø 200 is constructed from high-grade 316L stainless steel, ensuring excellent durability and resistance to corrosion. This material is particularly suited to handling the thermal stresses associated with wood, smokeless coal, gas, and oil applications. It is important to note that even though the joiner accommodates multiple fuel types, it is not suitable for gas liners. This product is strictly designed for incorporation within masonry chimneys, complying directly with Building Regulations Document J.
Key Benefits and Features
Seamless Connection: The joiner facilitates a robust connection between two pieces of MI-FLEX multi-fuel liner, bridging any gap caused by limitations in available flex length. This seamless join ensures that your chimney system remains safe and effective.
Durability and Quality: Made from 316L stainless steel, the joiner is not only resilient against high temperatures but also offers long-term durability with minimal maintenance. The natural finish lends it a clean, contemporary look that complements modern fireplaces.
Fuel Versatility: Whether you are using wood with less than 20% moisture, smokeless coal, oil, or gas (with approved components), this joiner is designed to support a range of fuel types, making it highly versatile for various installations.
Regulatory Compliance: Safety is paramount in any installation, and the Joiner - Ø 200 complies with all essential safety standards and building regulations in the UK. This compliance guarantees that your installation will meet the necessary guidelines for safe operation.
Installation Process
Installing the Joiner - Ø 200 is a straightforward process, but it should always be undertaken by a competent professional, ideally a HETAS registered technician. Below are the key steps involved:
• Verify that the chimney is a masonry structure, as the MI-FLEX system is not suitable for other enclosures like timber or plasterboard.
• Measure the existing flue components to ensure that the joiner will be required to bridge any gap in the liner length.
• Follow the manufacturer's installation guide meticulously to achieve a secure and aligned connection between the liner pieces.
• Conduct a thorough inspection post-installation to ensure that there are no leaks or misalignments that could compromise the system's efficiency.
Maintenance and Safety Considerations
For the continued efficient performance of your chimney system, regular maintenance is essential. Solid fuel appliances, in particular, require more frequent cleaning to avoid build-up, which could lead to blockages. Ensure that:
• The chimney is swept at least twice a year: once at the end of the heating season and once before the next season begins.
• Inspections are carried out regularly to detect any early signs of wear or blockages in the flue system.
• Any cleaning or maintenance work is performed by a qualified professional, especially in systems that utilise solid fuels.
Regular maintenance not only enhances the longevity of your chimney components but also ensures that the system operates safely and efficiently, reducing the risk of fire hazards.
Addressing Common Concerns
It is natural to have questions when considering a product like the Joiner - Ø 200. Below are answers to some common queries:
Q: Can the joiner be used with gas liners?
A: No, the joiner is not designed for gas liners and should only be used with MI-FLEX multi-fuel liner systems intended for wood, smokeless coal, oil, and approved gas applications.
Q: What maintenance is required once installed?
A: Regular inspections and sweeping are recommended to ensure the chimney remains free from soot and debris, especially if using solid fuels—typically, a minimum twice a year is advised.
Q: Is this joiner compliant with building regulations?
A: Yes, the product fully complies with Building Regulations Document J, ensuring that all safety and performance criteria are met.
Making the Right Choice
Choosing the correct accessories for your chimney system can significantly impact both performance and safety. With its high-quality construction, compatibility with multiple fuel types, and adherence to strict building standards, the Joiner - Ø 200 is a smart investment for anyone looking to enhance their chimney setup. National Flues stands behind this product with a commitment to quality, reliability, and customer satisfaction. Whether you are a homeowner or a professional installer, this joiner offers a practical, efficient solution to connecting extended flue liners.
Take the time to review your current installation, consult with experts if necessary, and invest in the components that will ensure a safe and compliant installation. At National Flues, we believe that informed decisions lead to robust and efficient chimney systems.
Add to cart now or call 01670 206 999.
National Flues Ltd Verdict
The Joiner - Ø 200 stands out as a reliable fitting essential for seamless installation of MI-FLEX flexible flue liners. Our customers nationwide, both retail and trade, rely on this joiner for its exceptional quality and compatibility. Enjoy swift and secure delivery across the UK.
The Joiner - Ø 200 is used to connect two pieces of MI-FLEX multi-fuel flexible flue liner when the chimney liner length exceeds the maximum available flex length.
National Flues is a leading supplier of fireplaces and flues in the UK, offering competitive prices, reliable delivery nationwide, and secure online payments for retail customers. We also provide trade accounts to industry professionals.
Purchase the Joiner - Ø 200 now for a secure and efficient chimney setup!
