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How to Repair a Composite Door Composite doors are extremely durable, but they are susceptible to problems. Fortunately, the majority times, these problems can be easily fixed through simple maintenance and regular checks. Often all that's required is to tighten or add longer screws on the hinges to help them move back into place. Make sure to flush the drainage holes periodically. Draughts Composite doors are designed to be energy efficient and provide a great level of security, however they can