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Bifold Door Seal Repair Bifold doors are a wonderful feature for any home, but they require regular maintenance and proper installation for correct operation. This includes a thorough inspection of the lubrication system, as well as a report on any problems that may occur in the near future. To minimise sticking, bifold doors are designed to be a little smaller than the frame. This also means air can enter through the gaps. Install a weather seal to stop this
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