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Bifold Door Seal Replacement Due to their space-saving design and ease of access, bifold doors are popular for hangars, garages and other industrial spaces. Maintaining them properly sealed is vital to ensure energy efficiency and cleanliness, as well as a comfortable indoor environment. Gaskets can become flat, shrink or even break over time. This can cause draughts and water ingress, and heat loss. Fortunately, fixing this issue is quick and easy. Seals on the top As time passes the seals made of rubber on a bifold can flatten or become damaged. This can cause