Thermador Industrial Firesafe core

All Tilt-a-dor Thermador Industrial door panels are made using Kingspan IPN insulation core. Unlike other door manufacturers using PUR insulation ,IPN (Polyisocyanurate foam)insulatation has a fire performance value of BS 2 D0 under EN13501-1:2007 + A1.
During the early stages of fire the Isophenic (IPN) core swells and expands slightly (Thereby filling any gaps between in the inner and outer steel faces) to form a protective char. The use of IPN cores means the Kingspan door components panel is more difficuly to ignite, produces less smoke and is self extinguishing.

The video below demonstrates the effect of fire on both Isophenic and PUR insulation cores.