I have what appears to be orange spots and run marks on the outside of my garage door at the top. I thought it was rust but it is not coming out where the nails and screws are. My garage door is white and just barely 2 years old. It goes all the way across the top and has run lines about 12 inches long and runs all the way down on both edges.
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Try using TSP (found at Home Center Stores like Lowes, or Home Depot, or any paint store). It should remove the chaulking orange stuff. Good Luck
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