Protect your home or property in times of flooding with Quick Dam Flood Barriers. They are ready to use. Just lay in place and let the water do the rest. Quick Dams expand and activate on contact with water. Absorb contain and divert problem water away from your home and property, before it becomes a problem. Keep some on hand for emergency situations. Use around doorways, garages, leaking tanks, construction projects, anywhere water is a problem. Each Barrier grows to 8cm high. For a stable wall, use 3 to increase height to 16cm- stacking them in opposite directions.