1- Make sure the surface is completely dry
2- Apply the Yazbeck Neoprene Repair Glue on each broken edge and cover completely. Keep both sides separated, do not connect them yet.
3- Wait until dry to touch (about 10 minutes or so, depending on weather and humidity in the air)
4- When both sides feel dry when touched, CAREFULLY and PRECISELY join the edges. Press and pinch forcefully in order to squeeze out any tiny air bubble that may still be trapped between the 2 edges.