Some homeowners replace their own seal and weatherstripping. However, especially in the case of a seal that must be nailed to the siding around the door, it’s easy to do damage to the house. If you notice that your garage door seal is not in good condition, or if it has been damaged by an object (such as a car), then you should have it replaced as soon as possible to prevent further damage. While the aforementioned tips are great for quick and easy DIY maintenance, the best way to ensure that your garage door is properly protected is to have the work done professionally. Ask your repair specialist to replace the seal, whether it’s the weatherstripping around the door or the gasket along the bottom edge. Have this done when he or she comes to give your automatic garage door opener a tuneup at the end of the year.