Contec.water rubber waterproofing for bodies of water is almost as versatile as you can dream: Swimming pond, biotope or renaturalization basin. This waterproofing does not leach pollutants such as herbicides or pesticides, has an expected life of over 50 years, is resistant to ultraviolet rays, root resistant and has a very high elasticity. Essential conditions for the use and enjoyment of the water - even after many years.