https://wizdomz.wiki/wiki/Bi_F....old_Door_Repairs_Its
Bifold Door Seal Repair Bifold doors make a fantastic feature for any home, but they need proper installation and regular maintenance for correct operation. This includes a thorough integrity check along with lubrication and a detailed review of any issues to prevent them from happening in the future. To prevent sticking, bifold doors are designed to be ever-so slightly smaller than the frame. Unfortunately, this also means air can enter through the gaps. To stop this from happening, install an air seal. Seals