Widely regarded as the UK's most solid and secure timber core composite door, Endurance Doors have been manufacturing their 48mm thick doors since 2002. Each and every door is made to order at their 4 acre state of the art production facility in Brigg, North Lincolnshire, and sold into homes through their growing Preferred Installer network. With an incredible online door designer, the result of considerable investment, homeowners can design their door online and even view it on their home.