Check for high quality storm doors from reputed lumberyards, door and window companies, home improvement chains, and home centers. Pay attention to detail by checking the door's components in the store. Open and close the storm door on display to check for smooth operation of latches and hinges and quality of construction. Look for doors that with low emissivity glazing, and pay attention to the warranty.
Storm doors come in wood, fiberglass, aluminum or steel, and many high quality units use a window and screen system that uses an interchangeable clip-in glass panel with insect screening. Other doors use panels on tracks that bypass each other or include a storage pocket for panels and screens.
Most high-quality storm doors are three-layered, with a solid wood core backed with an enamel-finished aluminum skin. Composite doors are tough and water resistant, with molded-through colors that last despite scratches. Many metal doors include foam insulation on the inside of the frames, and some doors include protective grilles and multi-point locking systems.
Prior to hunting for a storm door, measure the width and height of the door frame, specifically the doors opening between its jambs. Inspect the wood jamb and trim surrounding the door's opening to ensure that it is solid enough to support the weight of the new storm door. Use a bar extender to square the opening if needed.