If you live near the shore, you’ve seen what salt does. The grill rusts. The bike chain rusts. The screws on the deck railing go orange. Your garage door hardware is no different, except it’s also holding up a heavy door every time you open it. Salt lands on the springs, the cables, the rollers, the hinges. It keeps them damp. Rust shows up. You can’t keep the salt out of the air in Brick…