Isokern pumice flue blocks form part of the Isokern Double Module (DM) chimney system, a high performance modular chimney designed primarily for new build homes and modern construction projects. Manufactured from natural pumice, these chimney blocks provide excellent insulation, strength and long term durability, helping your stove or fireplace perform efficiently.

The Isokern DM modular chimney system is widely regarded as one of the best chimney block systems available. Its double module design combines an inner pumice flue block with an outer casing, creating a highly insulated chimney structure that improves flue performance while protecting surrounding materials from excessive heat.

Thanks to their lightweight pumice construction, Isokern flue blocks are easy to handle, cut and install, making them a practical choice for builders and installers. The system is suitable for both internal and external chimney builds, and can be finished to suit the property – either clad in masonry to create a traditional chimney appearance or rendered to match modern architecture.

Isokern modular chimney systems are suitable for open fires, wood burning stoves and other solid fuel appliances, providing reliable chimney performance in a wide range of installations. With more than 50 years of proven use across Europe, including colder climates such as Scandinavia, Isokern systems have built a strong reputation for safety, durability and efficiency.

Our range includes complete chimney packs as well as individual components, allowing you to build a full system with starter blocks, inner flue blocks, outer casings, offsets, chimney cappings and installation accessories.

All Isokern modular chimney systems are CE marked and manufactured to meet strict European standards, ensuring a safe and dependable chimney solution for modern homes.