by Martin Troughton Over recent years, UPVC doors have gained popularity, and there are some very good reasons. Not only are they safer, but they are also more economically and environmentally friendly, as well as more durable. They have proven that a door is not just a door. Everyone is trying to save money and conserve energy nowadays. It’s nothing but good to have a door that saves money at every turn, in addition to being less expensive to begin with. The most durable type of door used i