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How to Repair a Composite Door Composite doors are extremely durable, but they can develop problems. In most cases, these problems can be easily resolved by simple maintenance and regular inspections. It's often enough to tighten the hinges, or install longer screws to secure them back in place. Make sure you flush the drainage holes periodically. Draughts Composite doors are designed to be energy efficient and provide a high degree of security, however they can develop draughts over time. This is due t