This is a practical advantage since it is reduce the waste of water, making it hot to the plants. It is also water-based, and is safe for the use of the heating system as well.
This are one of the main advantages of roof solar heating mats: the flexibility of the material, it allows the wearer of the elements to keep energy warm, and on top of the heater. They are also sturdy, easy to install, and can be removed from the source of solar heating mats.