Chimney repair and duct maintenance without work


The Furanflex® system offers the possibility of Rehabilitate chimneys and flues of any shape, size and length without requiring extensive masonry work. Its installation process is extremely fast, allowing the internal reconstruction of the chimneys and their immediate use in a matter of hours.

Chimneys, both built and metallic, experience a continuous process of deterioration, which is attributable not so much to the materials used but rather to the high temperatures to which they are subjected.

Likewise, the chemical reactions derived from the products and processes of combustion, regardless of the type of fuel used, also contribute to this degradation process. Chimney repair involves a significant expense and, in many cases, is accompanied by masonry work and renovations that are annoying and expensive.

The Furanflex® method involves inserting a thermosetting lining made of a composite material into the old duct. Water vapor is then injected, causing the coating to conform to the walls of the duct. Once the duct expands, the catalyzing process begins and within a few hours, the coating is completely hardened and ready for use.

The system is integrated without splices and guarantees total airtightness. Adapts to the shape and trajectory of the original duct. With a thickness of between 3 and 5 mm, the diameter of the primary duct is minimally reduced, which does not affect the chimney draft. Its hardness is comparable to that of steel, being non-combustible, resistant to corrosion and with a heat resistance capacity of up to 1.000 degrees Celsius.

Dr. Humo, a company specializing in the installation, maintenance and repair of chimneys that run on biomass, presented this product at Expobiomasa 2023, along with tools and equipment for the professional chimney sweep.

Interview with Dr. Humo