Profile: Chalfont Garage Doors Ltd. is a supplier and installer of garage doors. Our sectional garage doors are also available in GRP, steel, and timber. Our roller garage doors are built either of single skin steel panels, or of aluminum foam filled slates. They offer good acoustic insulation, strength and security within the garage, and are ideal for short driveways and parking problems. They are also available in manual or an automatic option, making life easier at the touch of a button.