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Bifold Door Seal Replacement Bifold doors are a common option for garages, hangars and various industrial spaces due to their efficient use of space and quick access. It is crucial to keep them sealed to ensure energy efficiency, cleanliness and a comfortable atmosphere. As time passes, gaskets become flat, shrink or get damaged, which can cause leaks, draughts, and loss of heat. Thankfully, fixing this is simple and quick. Seals on the Top The seals on bifold doors made of rubber can become flat or damage