A sliding patio door provides one of the very best ways to connect the interior of your home to the outdoors. Its two large, glass panels—one fixed, one sliding—flood the room with sunlight ...

It's not unusual, though, for older sliding patio doors to show their age. The rollers and tracks are subject to wear, making operation difficult. Handles may break and latches may become misaligned.

Types of Sliding Door Tracks and Rollers Heavy-Duty Tracks and Rollers. Best for Large or Heavy Doors Heavy-duty systems are ideal for huge sliding doorways including patio or barn doors.