TYPE | Residential Buildings | LOCATION | Beijing |
MATERIAL | KINJOYA FM PLAIN， KINJOYA PU SYSTERM | YEAR | 2024 |
AREA | 400000㎡ |
Background
This project is one of the largest registered urban village renovation projects in Beijing, aiming to fundamentally improve the living safety and environment for villagers and promote integrated urban-rural development. The site has complex geology in a plain area with fluctuating groundwater levels, demanding high anti-seepage performance for underground structures. Beijing’s significant temperature variations require building materials with excellent low-temperature flexibility and aging resistance. The returning residents place high importance on living quality, making waterproofing a key factor in their satisfaction.
Solution
The roof and basement primarily used KINJOYA FM PLAIN SBS waterproofing membrane, while interior areas used KINJOYA PU series waterproofing coating. Strategies were tailored to different zones: 1. Underground: Double-layer KINJOYA FM PLAIN SBS membrane with 500mm-wide additional layers at corners and expansion waterstops plus double-layer reinforcement at post-casting strips. 2. Roof: For flat, sloped, and terrace roofs, either a “double-layer (3+4mm) KINJOYA FM PLAIN SBS membrane” or a “coating + membrane” composite system was used. 3. Interior: Wet areas used KINJOYA PU series coating (moisture-curing, 1.5mm thick), applied in three coats. Pipe bases were triple-sealed. A 300mm radius enhancement was applied around floor drains, and the wall waterproofing extended 1800mm high. Key process steps were documented, ensuring the quality of the 400,000 sqm waterproofing scope met design standards.
Outcomes
In 2023, 770 families successfully moved into their new homes, with the three-year housing project delivered four months ahead of schedule, demonstrating effective quality control. Supporting facilities, including a community health center and a nursing home, were substantially completed in 2024, with no reported leaks. The 4,171.5 mu Jinzhan Forest Park created on the cleared land reduces surface runoff pressure, indirectly relieving the load on the underground waterproofing system.
