Water Leakage in Prefabricated Finished Houses

The main causes of water leakage in prefabricated finished houses include material issues, installation techniques, design flaws, and problems with the joints. Solutions involve proper maintenance, using high-quality materials, enhancing construction quality, adding roof waterproofing layers, and identifying responsible parties to take appropriate actions.

Causes of Water Leakage

• Material Issues: The materials used in prefabricated panels are generally thinner than those in traditional brick-and-mortar structures, resulting in relatively poor waterproofing performance. Additionally, the jointing techniques for prefabricated panels are not as tight as those in brick-and-mortar houses, increasing the risk of water infiltration.
• Installation Technique Issues: Prefabricated panel houses are installed on-site, and during construction, they may be subjected to external impacts. Improper handling by workers can easily lead to damage to the panels or gaps in the joints, causing water leakage and rain infiltration.
• Design Flaws: Some prefabricated panel houses are designed without sufficient consideration for waterproofing, such as unreasonable drainage designs or water infiltration from embedded components, leading to water leakage.
• Joint Issues: The joints in prefabricated assembled houses are high-risk areas for water leakage. For example, the source of water leakage on the east wall of a balcony may be water seepage through the joints.

Solutions

• Proper Maintenance: Regularly inspect the waterproofing performance of prefabricated panel houses, including roof drainage, eave design, door and window seals, and wall joints. Identify and repair issues promptly.
• Use High-Quality Materials: When purchasing prefabricated panel houses, choose high-quality panel materials, especially those with high waterproofing performance, to improve overall waterproofing capabilities.
• Enhance Construction Quality: During construction, strengthen waterproofing treatments for all parts and strictly follow the design and construction plans to ensure construction quality.
• Add Roof Waterproofing Layers: Use professional waterproofing materials to add a waterproofing layer on the roof of prefabricated panel houses, enhancing waterproofing performance and preventing rainwater infiltration.
• Identify Responsible Parties and Take Appropriate Actions: Determine the responsible party based on the cause of the water leakage and the house warranty period. Homeowners should communicate with the developer and retain relevant evidence. If there is a dispute, a professional agency can be commissioned for identification. If negotiation and identification cannot resolve the issue, legal action can be taken in court.