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A butterfly hinge—also known as a surface mount hinge or dovetail hinge—is exactly what it sounds like: a hinge that resembles a butterfly. This type of decorative hinge, which is mounted on the surface of a door or cabinet, consists of two panels. One panel is mounted on a stable surface like a door frame and the other is mounted on the surface you need to open. It hinges open and closed like the wings of a butterfly.

On average, sliding glass patio doors can last between 20 and 30 years. Their actual lifespan depends on several factors, including proper installation, frequency of use, and regular maintenance of the sliding components. While this is the typical range, minor problems and the need for occasional repairs or part replacements can still occur. Addressing issues as soon as they arise and performing regular maintenance will help extend the door's life. If the door is older and requires frequent or significant repairs, it may be more cost-effective to replace the entire unit.

If you don’t know which door sweep to buy, look into getting a strip or bristle sweep. They’re easy to find at the store, work well for most doors, and the simple installation is DIYable. Before buying one, measure your door width and make sure the one you want is long enough. Most door sweeps are 36 inches long, and you can cut them down to size with a hacksaw.

On average, the cost to install or replace bifold doors ranges from $100 to $300, making them one of the most inexpensive interior door options. The final price depends on several factors, including the door's material and design, with hollow core and solid core doors being on the lower end of the cost spectrum. A local door installer will likely charge between $40 and $90 per hour. While a skilled DIYer may be able to install bifold doors, as most come with the necessary hardware, the doors can be heavy, and improper installation can lead to misalignment issues.