Gigogne chimneys - Specific technical features

View of the top of a ‘Gigogne’ chimney
The off-centre inner flue is guided on the height by guiding clamps “without a fixed point”. This characteristic stabilises the smoke flue and allows it to expand freely. The inner flue is welded continuously on the shell at the inlet point to seal the chimney. This design is a BEIRENS innovation..

Tightness of roof crossing

BEIRENS chimneys are installed inside and outside of buildings. For inside installations, the building must be made watertight at the roof crossing, and so we have fitted a storm collar in stainless steel 1.4301 (304L) from 6/10th to 10/10th of a mm thick, fastened by adjustable pipe clamp and seal.