In multi-unit residential and commercial buildings, drainage systems are far more complex than in single-family homes. Shared vertical and horizontal pipes carry wastewater from multiple apartments or offices. Over time, these main lines accumulate grease, sludge, and debris. Without proper maintenance, the entire building can experience serious plumbing issues. This is where stamspolning Stockholm becomes essential. Stamspolning focuses specifically on cleaning the main drain lines (stammar) within a property. It ensures that shared pipes remain clear, functional, and safe. Why Main Drain Lines Need Special Attention In apartment buildings, wastewater from multiple units flows through the same system. This increases…