A combination of gentle heat and a plastic scraper usually works well, as it loosens ice while protecting the weather stripping. Avoid metal tools because they can cut or weaken the seal, especially during winter garage door maintenance efforts. Adding a silicone lubricant afterward reduces repeat freezing in Green Bay or Appleton conditions. Be patient and work from one side to the other to prevent uneven pressure. This approach helps avoid forcing the system, which often leads to a malfunction later on.