Maintenance is the key to prolonged goal post life. The following maintenance and usage practices can help you to avoid many of the things that shorten the life of goal posts.
Keep Water Out
Many kinds of goal posts, especially permanent ones, are made from metallic components. Such components can gradually succumb to corrosion if their connections aren't kept watertight. Make sure that all the connections of your goal posts are always watertight so that moisture doesn't infiltrate the goal post and cause it to rust.