Pipe and sewer renovation: state-of-the-art renovation. With decades of experience, we are one of Northern Germany’s leading providers of trenchless renovation of buried sewage pipes. We work quickly, cost-effectively and sustainably safely. With our modern renovation processes, wastewater networks are renovated holistically. Thanks to the trenchless method, even areas that are difficult to access can be renovated in an economically attractive manner. Depending on the cause of the damage, different restoration procedures are available.