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Joist Support - Ø 125 (15-125-068)
National Flues presents the Joist Support - Ø 125, a premium chimney support solution engineered for secure and efficient installations through floor joists. Ideal for solid fuel, gas, and oil appliances, this high-performance support provides unmatched durability and safety, making it the perfect choice for your chimney installation project.
In Stock
£29.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
High-quality stainless steel construction (304 outer, 316 inner) High-density rockwool insulation for thermal protection Certified HETAS and CE for strict safety compliance Precisely engineered for chimneys passing through floor joists Even weight distribution for enhanced structural stability Straightforward installation with the provided Locking Band Versatile use for multi-floor applications and various fuel types
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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.
Our Joist Support - Ø 125mm is specifically designed for solid fuel and gas/oil appliances like woodstoves, gas coal effect fires, and boilers. Crafted with precision, the outer skin is made from 304 grade stainless steel, while the inner skin uses 316 grade stainless steel, both with a thickness of 0.4mm. The insulation is composed of high-density compressed rockwool, offering densities of 200kg/m3 for TWPro and 128kg/m3.
This joist support is fully welded for enhanced durability and safety. The minimal distance to combustibles is 50mm for TWPro and 60mm for KC. Moreover, the product is approved by HETAS and CE marked, ensuring compliance with stringent safety standards.
Installation is straightforward with the provided Locking Band, ensuring you maintain the required distance from combustibles such as wood and plasterboard.
SKU: 15-125-068
Technical Specifications
Material Outer
304 Stainless Steel - 0.40mm thick
Material Inner
316 Stainless Steel - 0.40mm thick
Insulation Density
200kg/m3 (TWPro) / 128kg/m3 (KC)
Minimum Distance To Combustibles
50mm (TWPro), 60mm (KC)
Load Support Maximum Distance
3 metres
Applicable Fuels
Wood, Oil, Gas, Low sulphur Coal
Approvals
HETAS / CE
System Compatibility
TWPro / KC
• Ensure you have the provided Locking Band available before starting the installation.
• Confirm the installation area complies with minimum distances from combustibles (50mm for TWPro and 60mm for KC).
• Securely fix the joist support to the designated floor joist, ensuring correct alignment for even load distribution.
• Review and follow all manufacturer guidelines for proper setup.
• **Warning:** Always maintain clearances from combustible materials such as wood and plasterboard to prevent fire hazards.
Yes, our Joist Support - Ø 125mm is compatible with solid fuel, gas, and oil appliances, including woodstoves, gas coal effect fires, and boilers.
The joist support features an outer skin made from 304 grade stainless steel and an inner skin from 316 grade stainless steel, both with a thickness of 0.4mm. The insulation is high-density compressed rockwool.
Absolutely. Our Joist Support - Ø 125mm is HETAS Approved and CE marked, meeting rigorous safety standards.
For TWPro, the recommended distance is 50mm, and for KC, it is 60mm. Ensure you maintain this distance from materials like wood and plasterboard.
Installation is straightforward. The parts are secured using a Locking Band. Make sure to adhere to the required distance from combustibles during installation.
Yes, our Joist Support - Ø 125mm is designed to support chimneys passing through multiple floor joists, ensuring safe and even weight distribution.
The Joist Support - Ø 125mm is suitable for use with TWPro Twin Wall Insulated Chimney parts as well as other compatible chimney systems.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Monday, May 19th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call.
If you need faster stove or fireplace delivery please also give us a call.
We can sometimes 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Read our review in our Joist Support - Ø 125 buyers guide
Comprehensive Buyers Guide for Joist Support - Ø 125
The Joist Support - Ø 125 from National Flues is an essential component in any chimney installation, particularly for systems requiring a secure passage through floor joists. Whether you are a seasoned installer or a cautious DIY enthusiast, this guide covers everything you need to know about installing, maintaining, and maximising the benefits of this critical product.
Understanding the Product
The Joist Support - Ø 125 has been meticulously engineered using high-quality stainless steel. The outer layer is crafted from 304 grade stainless steel, while the inner layer employs 316 grade. This dual-layer design ensures excellent resistance to corrosion and structural degradation, even under the demanding conditions of a chimney environment. In addition, the support includes high-density rockwool insulation, with densities tailored to the TWPro and KC systems (200kg/m3 and 128kg/m3 respectively), enhancing both thermal performance and safety.
Why Quality Matters
When it comes to chimney installations, quality should never be compromised. A robust joist support not only secures the chimney but also maintains the necessary separation from combustibles. The Joist Support - Ø 125 is HETAS approved and CE marked, reflecting its compliance with rigorous UK and European safety standards. By choosing this product, you are ensuring the long-term stability and safety of your chimney system, which is essential whether you are retrofitting an older system or installing a new one.
Key Benefits
- Exceptional Durability: The use of premium stainless steel guarantees that your support will remain strong and reliable for years. This durability minimizes the risk of failure and helps safeguard your property.
- Thermal Efficiency: The high-density rockwool insulation works effectively to manage heat, ensuring that no excess thermal energy is transferred to surrounding materials. This provides an extra layer of fire safety by keeping dangerous heat levels at bay.
- Safety and Compliance: With both HETAS and CE approvals, this joist support complies with strict building regulations, giving you peace of mind about your installation's security and regulatory compliance.
- Ease of Installation: Designed with practicality in mind, the support comes with a Locking Band that facilitates quick and secure installation. It is engineered to maintain the requisite safe distances from flammable materials, reducing your installation time and potential headaches.
How to Install Your Joist Support - Ø 125
Preparation:
Before you begin, ensure that you have read the installation guidelines thoroughly and have all necessary components ready. Confirm that the floor joists are properly located and that the area adheres to the minimum clearance requirements from combustible materials (50mm for TWPro installations and 60mm for KC installations).
Step-by-Step Process:
1. Mark the Joist Location: Identify the exact location on the floor joist where the chimney will pass through and mark the area clearly. Accurate measurements at this stage are crucial.
2. Position the Support: Align the Joist Support - Ø 125 carefully with your marked area. The support should sit flush and secure with the joist, providing a stable base for the chimney.
3. Secure Using the Locking Band: Utilize the Locking Band provided to firmly secure the support in place. This ensures that the support maintains the correct distance from combustibles and distributes the load evenly.
4. Verify the Installation: Once the support is in place, carry out a final inspection. Check that all connections are secure, the spacing is correct, and the support is level. If any doubts remain, do not hesitate to consult a professional installer for verification.
Important Safety and Maintenance Tips
Safety is paramount in any chimney installation. The Joist Support - Ø 125 is designed to maintain strict clearances from flammable materials, but this must not be overlooked during installation. Regular inspections should be carried out to ensure that the support is still firmly in place and that no components have become loose or damaged over time.
It is also advisable to monitor the overall condition of the chimney system periodically. Any sign of structural concern should be addressed immediately by a qualified technician to prevent potential hazards.
Addressing Common Concerns and Objections
Is the Joist Support compatible with all flue systems?
Yes, the design supports a range of chimney systems including TWPro and KC, making it a versatile addition to your installation toolkit.
How long does installation take?
With proper preparation and the intuitive design of the support, installation can be both swift and straightforward. The use of the Locking Band simplifies the process considerably, even for those with limited experience.
What if I encounter an installation issue?
Should you face any difficulties during the process, it is recommended to refer to the detailed installation instructions provided or to contact a professional installer. Ensuring accurate installation is crucial for the longevity and safety of your chimney system.
Is ongoing maintenance required?
While the robust construction of this support minimises the need for regular maintenance, it is wise to perform periodic inspections to confirm that all elements remain secure and effective.
Final Thoughts
Investing in a high-quality product like the Joist Support - Ø 125 is a decision that prioritises both safety and performance. Each feature of this product has been carefully considered, from its dual-layer stainless steel construction to its high-density insulation and security certifications. This ensures that your chimney system is not only stable and efficient but also compliant with the highest safety standards.
When planning your chimney installation, consider all aspects of the process—from selecting quality components to following precise installation procedures. A well-installed chimney support significantly reduces risks, improves thermal performance, and contributes to the overall longevity of your heating system.
Remember: the safety and durability of your installation depend on every component being correctly installed and maintained. Do not compromise on quality for the sake of cost. Invest in superior products that offer proven performance and reliability.
Add this reliable quality component to your installation project, and experience the benefits of a meticulously engineered system. Buy now or call 01670 206 999.
Upgrade your installation today for reliable safety and performance.
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