Increased Comfort Thanks to FRIAPHON Silence means quality of life. That's why any noise should be eliminated in houses or flats to the extent possible. The FRIAPHON noise-insulating in-house wastewater pipe system reduces the sounds coming from wastewater lines to a level no longer perceived as disturbing. The system complies with all current provisions governing sound insulation and fire protection. Certainly, the system also meets all requirements in terms of temperature resistance and lifetime defined in standards and regulations.