How to Waterproof Maps
- 1). Lay down a sheet of plastic in a well-ventilated area.
- 2). Place the map, fully unfolded, on the plastic sheet.
- 3). Brush water seal liberally over the entire map, as if painting the map.
- 4). Allow the water seal to become slightly dry and tacky (about an hour), then flip over and brush the other side.
- 5). Clothespin the wet map to a clothesline or other hanging line in a well-ventilated area. In 72 hours, the water seal will be completely dry and the map ready to fold up and pack.
