Sectional garage doors are popular on today’s market because of their thermal properties. Many find that they are ideal for converting your garage into a playroom, workshop, gym, home office or storeroom. Some sectional doors offer over 40mm thick panels. These panels are constructed of an outer and inner steel skin separated by a special foam core. The panel construction gives the door a rigid strength without compromising style. Rubber seals around the door prevent drafts and debris blowing into the garage, as well as offering excellent security.