DM36 - 690mm sq. capping for brickwork
At a Glance
- - 690mm square design specifically for brickwork
- - Constructed from natural, insulating pumice
- - Double wall design to maintain optimal flue gas temperatures
- - HETAS approved and CE marked for safety and reliability
- - Minimises risk of cracking, leaking, and staining
- - Rapid attainment of ideal operating temperatures
- - Suitable for a wide range of heating appliances (wood, solid fuel, oil, gas)

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.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The DM36 - 690mm Square Capping for Brickwork is a crucial component of the high-quality Isokern DM block chimney system. This double wall system is meticulously designed to maintain flue gas temperatures while insulating against heat transference to the outer casing. The separation between inner and outer layers enables necessary thermal movement, effectively mitigating risks of cracking, leaking, or staining.
The DM36, along with its counterparts DM44 and DM54, can be effortlessly constructed and is suitable for a range of heating appliances, including inserts, stoves, open fires, and cookers that burn wood, solid fuel, oil, or gas (excluding condensing appliances and Biomass & Pellets). Made from pumice, a natural insulator, the DM36 allows quick attainment of optimal flue gas temperatures, enhancing the efficiency of your heating appliance soon after lighting. As the appliance cools, the pumice insulation maintains a warmer chimney longer, thereby reducing condensation and soot build-up.
This Isokern DM system is HETAS approved and CE marked, ensuring top-notch reliability and safety. Please refer to the included installation guides for detailed instructions.
SKU: 59-130711
Technical Specifications | |
---|---|
SKU | 59-130711 |
Dimensions | 690mm square |
Material | Pumice |
System | Isokern DM block chimney system |
Approvals | HETAS approved, CE marked |
Warranty | 10 Years |
Combustible Clearance | 0 on straights; 38mm on offsets (DM System) |
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.
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National Flues Ltd Verdict
The DM36 - 690mm Square Capping for Brickwork is an exceptional choice for any brick chimney project. Its superior construction and design ensure you get the best performance and endurance, backed by HETAS approval and CE marking. With National Flues, you can rely on prompt and reliable delivery across the UK, whether you're a retail customer or a trade professional.
The DM36 - 690mm Square Capping for Brickwork is used to cap off chimney terminals, protecting against the elements and enhancing the performance and longevity of the chimney system.
Isokern is renowned for its high-quality chimney systems, offering reliable and efficient solutions for a variety of heating appliances. Their innovative use of pumice as an insulating material sets them apart in the marketplace.
