PACK OF 5 - Deluxe 25mm Eco Therm Insulation 1200mm x 2400mm x 25mm The Deluxe Eco Therm Eco-Versal Insulation comprises of a fibre free rigid polyisocyanurate (PIR) insulation core faced with an aluminium foil composite on both sides. Applications include both new build and upgrading the thermal performance of existing building elements, providing a cost effective means of reducing CO2 emissions and for compliance with Building Regulations / Standards. A universal solution for insulating pitched roofs, floors, walls, dormer cheeks & ceilings.