How to Solve Leakage Problems in Prefabricated Flat House Roofs
Leakage problems in prefabricated flat house roofs can be addressed through measures such as installing color-steel roofs, laying waterproof membranes, covering with plastic film, or repairing with homemade materials.
Color-Steel Roofs: Color-steel roofs are made of metal sheets with anti-rust coatings and are installed by pressing and assembling whole sheets, effectively solving rain leakage issues. There are two installation methods: pointed-roof and flat-roof styles. Pointed roofs have better drainage performance and cost about 20% more than flat roofs, but they can last up to 20 years with a basic price of 60-80 yuan per square meter. If the budget is sufficient and long-term waterproofing is desired, color-steel roofs are a reliable choice.
Waterproof Membranes: Waterproof membranes are commonly used roof waterproofing materials, and their effectiveness mainly depends on the quality of the membranes and the technical proficiency of the installers. The price of waterproof membranes alone is about a dozen yuan per square meter, and the overall cost is relatively controllable when installation fees are included. Their service life is generally around 15 years, making them suitable for users with high waterproofing requirements and moderate budgets. However, it is important to ensure proper base layer preparation during installation to avoid waterproofing failure due to improper construction.
Plastic Film Covering: For users with limited budgets or those seeking temporary solutions to rain leakage, covering the entire roof with plastic film can be an option. During operation, the film should be secured with heavy objects or covered with a layer of soil or other materials to enhance stability. This method has a relatively short service life, typically 2-3 years, but it is extremely inexpensive, costing about 2 yuan per square meter, making it suitable as an emergency measure or short-term transitional solution.
Homemade Repair Materials: If there are only local cracks in the roof, homemade repair materials can be attempted for repair. The specific method involves cutting white foam into pieces, dissolving it with gasoline, stirring it into a paste, then adding black epoxy resin liquid, an appropriate amount of gasoline, and gray cement, and stirring evenly before using it to fill the cracks. This method is low-cost, but attention should be paid to operational safety to avoid fires caused by gasoline volatilization, and the repair effect may vary depending on the material ratio and operational technique.
