Pumice Flue Systems

At Bonfire, we understand the importance of having a high-quality chimney system that meets your specific needs. Whether you’re building a new home or updating your existing chimney, choosing the right system is crucial for ensuring the safety and efficiency of your heating system.

What is pumice?

Pumice is a natural volcanic rock that has a unique cellular structure. This structure makes it an excellent insulator, which is why it is commonly used in the construction of chimneys.

Pumice is also lightweight, making it easy to handle and install, and it is extremely durable, making it ideal for use in harsh environments.

Benefits of Pumice Chimney Systems

Pumice Chimney Systems offer many benefits over traditional masonry chimneys. Firstly, they are much lighter than masonry chimneys, which makes them easier to install and reduces the need for additional structural support.

There are many benefits to using a pumice chimney system in your home, including:

  • High Insulation: Pumice is a naturally insulating material, which means that it can help to keep your home warm and reduce your heating costs.
  • Durability: Pumice is a highly durable material that can withstand extreme temperatures and weather conditions, making it an excellent choice for chimney construction.
  • Lightweight: Pumice is a lightweight material, which makes it easier to install and transport.
  • Eco-Friendly: Pumice is a natural material that is environmentally friendly and sustainable.

Secondly, pumice has excellent insulating properties, which means that the heat from your heating system will be retained in the chimney, resulting in a more efficient heating system.

Finally, pumice chimneys are incredibly durable and resistant to cracking and damage, which means that they require very little maintenance over their lifetime.

Types of Pumice Chimney Systems

There are several types of Pumice Chimney Systems available, each with their unique features and benefits. The most common types include:

Isokern Chimney Systems

The Isokern chimney systems are high quality pumice chimney systems perfectly suited for both new build chimney installations and the refurbishment of existing chimney block system.

Designed with ease and durability in mind, each product in the Isokern chimney collection is lightweight and versatile, offering superior compatibility with steel and timber frame constructions as well as masonry.

Whether you’re building a new chimney, or relining your old chimney, an Isokern round pumice liner chimney system is the ideal match for your wood burning appliances, both outdoors and indoors.

The Isokern chimney legacy spans over sixty years and two continents; a fact which in itself is indisputable evidence for the quality of the brand.

The properties of a pumice chimney system

Since pumice is a natural insulator, it’s the perfect material for a new build chimney. This unique property separates pumice chimney systems from all other types of chimney block systems, making Isokern chimneys the preferred solution of many homeowners.

With the help of a pumice chimney system, your heating appliance will easily reach optimum temperature within record time of lighting. Plus, a chimney block system made from pumice will stay warm for longer, maximising the efficiency and heat output of your wood burner and reducing the possibility of soot build-up in the flue.

Isokern Flue Liners

The Isokern chimney flue liners make for a great pumice chimney system when building a new chimney which will be surrounded by stone, brick or block. Available in a range of sizes, the Isokern chimney linings are compatible with all fuel types; however, they are not suitable for condensing appliances such as pellet or biomass. As well as new build chimney systems, these pumice liners fit perfectly within refurbished masonry chimneys.

Isokern Chimney Blocks

The Double Module chimney block system is the ideal solution if you’re looking for maximum insulation in a minimal space and seamless construction. Designed with ease of installation in mind, this pumice chimney system contains a number of lightweight block which specialists can handle effortlessly.

Each element of the Isokern chimney block system is laid with great attention to detail, its inner and outer blocks connected by staggered joins for added stability. Between the two layers of the pumice chimney system, an air gap is formed to increase the insulation of your Isokern chimney.

The revolutionary pumice chimney block system is a perfect companion to new build chimneys. The Isokern chimney system is suitable for oil, gas, wood logs and solid fuels, but it’s sadly not compatible with condensing appliances.

Pumice Outdoor Fireplaces

Browse all of our pumice outdoor fireplaces here


At Bonfire, we believe that a pumice chimney system is a great choice for any home. Whether you are looking for high insulation, durability, or eco-friendliness, our pumice chimney systems are designed to meet your needs.

With a variety of types and sizes to choose from, we are confident that we have the perfect chimney system for your home. Contact us today to learn more about our pumice chimney systems and how they can benefit you.

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