https://morphomics.science/wik....i/History_Of_Bi_Fold
Bifold Door Seal Repair Bifold doors are a wonderful addition to any home, but they need regular maintenance and proper installation for proper operation. This includes a thorough inspection of the door, lubrication, and the report of any issues that may occur in the future. To reduce sticking to reduce sticking, bifold doors are made to be ever-so-slightly smaller than the frame. Unfortunately, this can also cause air to leak in through the gap. Install an air seal to correct this issue.