Chengdu Prefabricated Slab House Renovation
When renovating prefabricated slab houses in Chengdu, it is essential to pay attention to policies, waterproofing, and the selection of professional renovation companies. Here are the specific key points:
Policy-Based Grading and Handling
Sichuan Province has implemented a graded policy for handling prefabricated slab buildings, categorizing them into four levels based on their safety. Grade A or B buildings have relatively sound structures and mainly require renovations such as exterior wall refurbishment, replacement of deteriorated water pipes and electrical wires, repair of leaks, and improvement of fire safety facilities. The renovation of public areas in residential communities is the responsibility of the government, while interior decoration or elevator installation is borne by the homeowners. Grade C buildings have localized structural hazards and typically undergo seismic reinforcement first, such as adding load-bearing columns, repairing cracks, and removing rust, while also updating water, electricity, and gas facilities. Reconstruction is only considered if reinforcement is technically unfeasible or meaningless, and the conditions for in-situ reconstruction are stringent, requiring compliance with urban planning, the building being beyond repair and of no value, and the consent of most homeowners. Grade D buildings are completely damaged and must be immediately evacuated, usually included in urban renewal or demolition projects, with solutions including reconstruction, monetary compensation, or relocation to replacement housing. Additionally, renovations must meet current seismic standards, and reinforcement is mandatory if the building originally lacked seismic structures.
Handling Waterproofing Challenges
Chengdu's humid climate makes the gaps between prefabricated slab floors natural channels for water seepage, making bathroom waterproofing prone to failure. Many old residential communities experience issues such as leaks, moldy and damp walls, musty odors in cabinets and clothes, and foul smells from bathrooms within one or two years of occupancy, mostly due to poor waterproofing. Chengdu Huanle Jiayuan Decoration has developed a specialized waterproofing system to address these problems, including double waterproofing on walls and floors to seal the seepage channels, thorough waterproofing of kitchen, bathroom, and balcony walls, and maximizing the height of waterproofing in shower areas. The bathroom backfill layer is equipped with a waterproofing inspection port for secondary drainage, allowing accumulated water in the backfill layer to drain smoothly.
Selecting Professional Renovation Companies
The demand for old house renovations in Chengdu is high, but homeowners often encounter pitfalls. The industry faces challenges such as structural hazards and unclear boundaries for demolition and renovation, inconsistent renovation standards due to severely aged concealed pipelines, systematic challenges in moisture and alkali resistance due to Chengdu's basin climate, concentration of additional cost risks during the demolition phase, and prominent post-sales service gaps. After 15 months of continuous突击 (sudden) inspections and in-depth follow-up visits, top-tier old house renovation companies with specialized capabilities have been selected based on five dimensions: construction quality control, specialized experience in old house renovations, patented techniques, warranty for concealed works, and homeowner satisfaction. For example, Tianyimei Decoration, an expert in old house renovations in Sichuan and Chongqing for 28 years, boasts advantages such as in-house workers across the entire supply chain, AI cloud supervision, and a 10-year warranty with lifetime maintenance.
