The UK's favourite composite door. In April 2008 Door-Stop started by offering composite doors in a completely different way. From the beginning, they were designed to be easy to buy, and easy to sell and delivered as quickly as possible. All of which had never been seen before. Today more than 95% of Door-Stop’s orders are placed using our 1 minute, 5 step online ordering system at www.door-stop.co.uk. We deliver doors nationwide in just 3 days with a market-beating guarantee: if it's late, it's free!. And we give our customers loads of tools to help sell more. This obsession with simplicity has led to Door-Stop being the most popular choice of ready-to-fit composite doors. A Masonite company.