How effectively the buffer insulates depends on its material, which can be wood, aluminum or a metal that holds argon. The natural wood trim and decorative grilles on these Pella French doors lend a heartwarming, nostalgic look to the arrangement. Photo courtesy of Pella Windows and Doors Another important factor to consider when choosing a patio door is the overall construction of the unit. When spending such a significant amount of money, you want a product that will stand the test of time. And in comparison to windows, patio doors need to perform like Arnold Schwarzenegger.
Kids bang through the door, going inside and out all day, all summer long.
The family terrier has learned the endearing trick of scratching on the door to go outside-and get back in. And during weekend barbecues, traffic through the door never seems to stop. Over the years, a poorly made patio door can warp, bow or run off its tracks. To prevent warping and bowing, Pella seals the edges of its doors. According to Peachtree Doors and Windows, its three-point latching system secures a tight fit for the door and prevents warping in the long run.