Insulated Roller Shutter 
A 3mm thick continuous polyurethane foam layer, backed by a silver, wipe clean aluminised polyester lining is laminated to the inside of the door. independent calculations by the National Physical Laboratory established a 'U' value of 0.59 W/m²K, well within the 0.7 W/m²K indicated by building regulations. As well as reducing heat loss the insulation improves the acoustic properties of the door and its patented embossed gridded pattern gives a smart and uniform appearance to the inside door.  
Designed and created by it'seeze