A window replacement company we contacted will remove an old 6-foot-wide four-panel sliding door and replace it with a French door for about $1,140.

One option for replacing your patio sliders is bifold doors. But, is it worth the cost? We asked an expert to help us sort out the pros and cons of replacement.

April Wilkerson shows how to replace a door with a sliding one—step-by-step, offering a practical and stylish upgrade.