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Top Plate - Ø 125 (20-125-P)
Enhance your chimney system with the Top Plate - Ø 125 from National Flues, a premium accessory for MI-FLEX flexible flue liners. This high-quality component, with its robust GALV construction and natural stainless steel finish, is essential for maintaining the safety and efficiency of your fireplace or flue system. Perfect for a range of fuel types including wood, oil, gas, and smokeless coal, our Top Plate offers unrivalled durability and performance while complying with Building Regulations.
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In Stock
£10.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Robust construction engineered for MI-FLEX 316 and 904 flexible flue liners
400mm square design for optimal weight distribution
Suitable for multiple fuel types including wood, oil, gas, and smokeless coal
Compliant with Building Regulations Document J and approved by HETAS/CE
Engineered for high temperature performance (up to 600°C T600 designation)
Made from durable GALV material with a Natural / Stainless Steel finish
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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 Top Plate - Ø 125 is a critical component designed to provide strong support for MI-FLEX 316 and 904 flexible flue liners. Measuring 400mm square, this plate works in sync with a Top Clamp and Top Insert Sleeve, ensuring that the flue liner’s weight is effectively managed at the top of your chimney stack. Manufactured to comply with Building Regulations Document J, this top fixing accessory is suitable for a range of fuel types including wood (with moisture content <20%), smokeless coal, gas, and oil.
Rated for appliance use up to 600°C (T600 designation), our top plate guarantees a secure installation when adhered to correct guidelines. Proper chimney preparation is crucial – ensure that your chimney stack is fully weatherproofed, structurally sound, and that all pots are in good condition. For maintenance, an accessible design allows for easy inspection and cleaning, ideally performed twice a year by a certified professional, such as those registered with HETAS.
Cleaning should never involve chemical agents or mild steel tools to avoid damage to stainless steel parts. This top plate is not just a purchase; it’s a long-term investment in the safety and efficiency of your chimney system.
SKU: 20-125-P
Technical Specifications
Size
400mm square
Material
GALV (Galvanised)
Finish
Natural / Stainless Steel
Compatible With
MI-FLEX 316 & 904 flexible flue liners
Fuel Types
Wood (<20% moisture), oil, gas, smokeless coal
Temperature Rating
Up to 600u00b0C (T600 designation)
Certifications
HETAS, CE
System Design
Top Plate works in tandem with Top Clamp and Top Insert Sleeve
Before installing the Top Plate - Ø 125, ensure that your chimney stack is fully weatherproofed and structurally sound. Begin by confirming all chimney pots are in optimal condition. The following steps should be adhered to for a secure installation:
1. Verify that the chimney lining is correctly positioned and that the flue liner fits seamlessly with the Top Plate, Top Clamp, and Top Insert Sleeve system.
2. Position the Top Plate at the top of the chimney stack, ensuring it is level and secure.
3. Follow all manufacturer guidelines and local Building Regulations to guarantee compliance and safety.
4. Schedule annual or biannual inspections by a certified professional (preferably a HETAS registered chimney sweep) to maintain safe operation.
Warning: Do not use chemical cleaners or mild steel tools on the stainless steel components, as this may cause irreparable damage. Ensuring precise installation and regular maintenance will maximise the lifespan and effectiveness of your chimney system.
The Top Plate - Ø 125 measures 400mm square, making it suitable for supporting flexible flue liners at the top of a chimney stack.
The Top Plate is designed for use with MI-FLEX 316 and 904 flexible flue liners and is suitable for wood, smokeless coal, gas, and oil appliances.
Ensure that your chimney stack is fully weatherproofed, structurally sound, and that all chimney pots are in good condition before installation.
The Top Plate is rated for use with appliances up to a maximum temperature of 600°C (T600 designation).
Your chimney should be cleaned and inspected at least once a year, or ideally twice if used for solid fuels, by a certified professional.
No, chemical cleaners and mild steel tools should not be used on stainless steel chimneys to avoid damage.
For solid fuel appliances, a list of HETAS registered sweeps is available at www.hetas.co.uk.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th.
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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Read our review in our Top Plate - Ø 125 buyers guide
Comprehensive Buyers Guide for the Top Plate - Ø 125
Choosing the right chimney accessory is critical for the safety, performance, and longevity of your heating system. With the Top Plate - Ø 125, you gain a reliable and robust solution designed to support MI-FLEX 316 and 904 flexible flue liners. This guide explains everything you need to know in order to make an informed decision.
Understanding the Product
The Top Plate - Ø 125 is engineered to provide the critical support required for flexible flue liners. With a generous size of 400mm square, it facilitates uniform weight distribution at the top of your chimney. Its construction from durable GALV material ensures that it can handle high temperatures (up to 600°C) and challenging weather conditions, while the natural/stainless steel finish contributes to both its appealing aesthetic and resistance to corrosion.
Key Features and How They Benefit You
- Robust Construction: The Top Plate’s sturdy design ensures reliable performance and stability. This is particularly important for maintaining the integrity of your chimney system over many years.
- Versatility: Compatible with various fuel types such as wood (with moisture content below 20%), oil, gas, and smokeless coal, it caters to diverse heating needs, making it a versatile addition to your home.
- Safety and Compliance: Fully compliant with Building Regulations Document J and endorsed by HETAS/CE, this top plate offers assurance of quality and adherence to safety standards, minimizing potential hazards.
- Easy Maintenance: Designed for straightforward inspection and cleaning, maintaining your chimney becomes a hassle-free process. This is essential for ensuring that your heating system operates efficiently and safely throughout its lifetime.
Installation Essentials
Proper installation is pivotal. Begin by ensuring that your chimney is fully weatherproofed and structurally sound; any compromise here could affect overall performance and safety. The Top Plate is designed to work in harmony with complementary accessories like the Top Clamp and Top Insert Sleeve to offer a cohesive solution. When installing, make sure that all components are correctly aligned and securely fixed to distribute the flue liner’s weight evenly.
Important: Avoid using chemical agents or mild steel tools when cleaning or performing maintenance, as these can damage the high-grade stainless steel parts. Regular inspections by a HETAS registered professional are recommended to keep the system in optimum condition.
Addressing Common Questions and Concerns
Q: Will this product work with my current chimney setup?
A: Yes, if you are using MI-FLEX 316 or 904 flexible flue liners, this plate is specifically designed to complement those systems. It is essential for ensuring durability and safety when supporting your chimney’s top structure.
Q: Is the installation process something I can handle myself?
A: Although the installation is straightforward, we recommend professional assistance, especially to comply with the Building Regulations and ensure that the installation is both secure and effective. A certified professional can also help address any concerns about weight distribution and system integrity.
Q: What maintenance is required?
A: Regular inspection is key. Ideally, you should schedule cleaning and inspection at least twice a year, particularly if your system is used with solid fuels. This routine maintenance will help in early detection of any issues that might compromise the performance or safety of your chimney.
Q: Can I use harsh chemicals for cleaning?
A: Absolutely not. The use of chemical cleaners can lead to damage of the stainless steel components, which are integral to the product’s design and performance. Instead, use only the cleaning methods recommended by professionals.
Making the Right Decision
Investing in the Top Plate - Ø 125 means investing in the longevity and safety of your chimney system. It is not just an accessory but a vital component that enhances the overall efficiency of your heating system. The reliability, ease of maintenance, and compliance with stringent safety standards make it a standout choice for homeowners and professionals alike.
By choosing this top plate, you are ensuring that your chimney is well-prepared to distribute the weight of the flue liner securely, thereby minimising risks associated with structural failures or inefficient heat distribution. Its versatility in handling various fuel types makes it an optimal choice for many households, ensuring that you have a product that adapts to your heating needs regardless of the season.
Furthermore, with its high temperature tolerance and resistance to harsh environmental factors, this top plate provides a long-term solution that marries performance with durability. It’s a smart, cost-effective investment that aligns with modern safety and environmental standards.
Final Thoughts
Before making your final decision, consider the long-term benefits of a product that not only meets but exceeds industry standards. The ease of installation, combined with low maintenance requirements and robust performance, stands as a testament to its engineering excellence. The Top Plate - Ø 125 is more than just a component—it is a critical investment in the efficiency and safety of your entire chimney system.
For any homeowner serious about safeguarding their heating appliance and ensuring optimal performance, this top plate represents the pinnacle of reliability and quality. Its design and regulatory approvals offer the assurance you need to proceed with confidence.
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