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Outswing doors are more popular for exterior doors as they offer more room for moving items in and out of a home. And because the hinges are on the outside of the door, they’re more secure against potential break-ins. But, outswing doors are more susceptible to the elements and are more expensive. Comparing inswing vs. outswing doors depends on your budget, needs, and overall preference.

Check the package of your bifold door. The width shown is half an inch larger than the bifold set. This allows at least 1/4 inch between the side jamb and pivot. When installing the top track, saw the track down to leave approximately 1/6 inch on each end. This will ensure your bifold door folds and unfolds smoothly without getting stuck in the frame.

Start by checking the top or side edge of the door. Look for a certification label or metal tag stamped with details like the fire rating and information on the manufacturer. Even if it’s painted over, the tag should still be visible. Next, look along the edges for slim intumescent strips. They’re designed to swell up and seal gaps when exposed to heat. Finally, check if the door closes itself. Most fire doors have a self-closing mechanism, like an overhead closer or spring hinges. If none of these are obvious, contact a fire safety professional to help verify your door. 

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.