Double Module

The Isokern Double Module (DM) pumice chimney system is designed for UK self-builders architects and builders seeking modular efficiency in new developments. Pumice blocks interlock with lip-glue for fast load-bearing stacks – quicker than brickwork and suited for rendered or bricked finishes using a corbel. Sizes tie to flue needs: DM36 (150mm) for stoves DM44 (200mm) for open fires/cassettes DM54 (300-345mm) for large double-sided. High insulation from volcanic pumice ensures peak performance. Compliant with BS EN 1858 Document J HETAS. Use DM calculator at https://www.isokernshop.co.uk/dm-calculator LECA tool at https://www.isokernshop.co.uk/leca-lip-glue-calculator and flue size at https://www.isokernshop.co.uk/flue-size-calculator. Adaptors for stoves gathers for fires. UK delivery from isokernshop.co.uk.