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DM54 - 950mm sq. capping for brickwork (59-130734)

National Flues presents the DM54 - 950mm square capping for brickwork, a premium component of the Isokern DM block system designed to elevate your chimney and flue installations. This advanced capping solution is synonymous with quality, combining the durability of natural pumice and innovative double wall insulation technology. Perfect for stoves, open fires, and a variety of cookers, our DM54 provides an effective insulation solution that enhances efficiency and safety in every installation.
The price you pay today £143.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    High-quality Isokern DM block system
    Superior double wall insulation design for optimal flue gas temperatures
    Pumice construction for excellent natural heat retention
    Versatile compatibility: Suitable for stoves, open fires, and cookers burning wood, solid fuel, oil, or gas (excluding condensing appliances)
    Easy and quick assembly with detailed installation guides
    HETAS approved and CE marked for safety and quality
    Available in multiple sizes: DM36, DM44, and DM54
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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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.

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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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: [email protected]

The DM54 - 950mm square capping for brickwork is part of the superior Isokern DM block system, a high-quality double module chimney solution. Designed to maintain flue gas temperatures effectively, this system also prevents heat transference to the outer casing, thanks to its double wall construction. This advanced design allows for thermal movement, reducing the risk of cracks and potential leakages or stains.

Moreover, it is simple and quick to assemble, making installation a breeze. Available in three sizes—DM36, DM44, and DM54—this system is versatile and can be used with inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas (excluding condensing appliances like Biomass & Pellets). Pumice, a natural insulator used in the construction, ensures swift reaching of optimal flue gas temperatures, thus enhancing the performance of your heating appliance and reducing condensation and soot build-up.

Approved by HETAS and CE marked, the Isokern DM system meets high standards with the designation number T450 N1 D 3 G(00). Detailed installation instructions are provided in accompanying guides.

SKU: 59-130734

Technical Specifications
SKU59-130734
Product NameDM54 - 950mm Square Capping for Brickwork
Size950mm square
MaterialPumice
Warranty10 Years
System DesignDouble wall construction for thermal efficiency
CertificationHETAS Approved, CE marked
Combustible Distance0mm on straights; 38mm on offsets (DM System)
Compatible AppliancesStoves, Open Fires, Cookers (wood, solid fuel, oil, or gas)
The DM54 system is engineered for simplicity. Follow the detailed installation guides provided with your order to achieve a secure fit. Key steps include verifying the alignment of the double wall construction, ensuring precise measurements to accommodate the 950mm square dimension, and confirming the clearance distances especially where offsets are involved. Adhere to local regulations and safety standards during assembly. Although installation is generally straightforward, consult a professional if you encounter any uncertainties to safeguard the longevity and performance of your chimney.

The DM54 capping is used to top off brickwork in chimney constructions, helping to maintain flue gas temperatures and prevent heat transference.

Yes, it’s suitable for stoves, open fires, and cookers burning wood, solid fuel, oil, or gas, but not for condensing appliances such as biomass and pellet systems.

Pumice is a natural insulator, which allows quick optimization of flue gas temperatures and maintains these temperatures longer, leading to better performance and less condensation.

The double wall system maintains flue gas temperatures and prevents heat transference to the outer casing, reducing the risk of cracking and subsequent leaking or staining.

Yes, the DM54 system is straightforward and quick to assemble, making it convenient for both trade and DIY installations.

The DM54 is HETAS Approved and CE marked, ensuring it meets high safety and quality standards.

Yes, the DM54 system is versatile and can be incorporated into many existing setups, provided it matches the appliance's requirements and local regulations.

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