The core activity of Gaznox SA consists of the design, manufacture and installation of flues and chimneys for various applications, including: flues and chimneys for boilers, industrial chimneys, chimneys for emergency power generators, chimneys for wood stoves and fireplaces, metal constructions (e.g. walkways, beams, roof trusses), fire protection measures (e.g. fire hoses, channels and separations), masonry, plastering and painting work, ventilation systems and galleries. The company offers these services for new constructions, renovations and maintenance work in the cantons of Geneva, Vaud, Valais, Neuchâtel and Jura.