In recent weeks, heavy rainfall has left many homeowners dealing with the frustration of water seeping into their homes. This issue not only causes damage but also raises concerns about the structural integrity and safety of the property. So, what's causing this problem, and how can it be resolved? Let’s take a closer look at expert insights and practical solutions.
Jinghua Times reporter Ma Xijinghua and Wu Shangnan report on the growing concern among residents, especially those living on the top floors. Many have noticed water leakage on walls and ceilings, leaving them confused about the source and the best way to address it. According to experts, the root cause often lies in the roof structure or its waterproofing system. If these elements are improperly designed or damaged, leaks can occur, leading to long-term issues if not addressed promptly.
Hu Zengguang, an engineering director from Beijing Peak Decoration, emphasizes that interior renovation alone cannot fully resolve such problems. Once a homeowner detects water seepage, they should immediately contact the property management to initiate proper repairs. For older buildings, another common issue is the aging and cracking of concrete joints, which can lead to mold and dampness inside the home. In such cases, applying waterproof paint on the interior walls may offer temporary relief, but the most effective solution is to involve the property owner or developer for comprehensive repairs.
Window leaks are another frequent problem, often caused by poor sealing materials. When the material between the window frame and wall lacks elasticity, it can crack due to temperature changes, allowing water to enter. To fix this, the old sealant should be removed and replaced with a stretchable polyurethane foam, followed by a high-quality sealant on the outside. While this method is more expensive, it offers better long-term results. Alternatively, sealant can be reapplied annually to maintain effectiveness.
Another factor contributing to leaks is the absence of a proper drainage slope on the window sill. Without a downward slope, rainwater can reverse and seep into the house. Some homeowners, during balcony renovations, may move the window outward, blocking the drip edge and allowing water to flow into the gaps between the window and the wall. This highlights the importance of checking and adjusting the drainage system before any major modifications.
For rear-closed terraces, leaks are often linked to improper construction practices during window installation. Before tiling, the outer wall should be properly waterproofed and insulated. If there's no beam above the original terrace, installing a false beam can help prevent water infiltration. The beam should be positioned slightly inward, sealed with quality sealant, and covered with a waterproof material like aluminum composite panels. This not only improves aesthetics but also enhances the overall waterproofing of the area.
After addressing the upper part of the terrace, the window sill must also be carefully managed. A proper drainage slope should be created both inside and outside the sill to ensure rainwater flows away effectively. Choosing a high-quality window and sealing the joints with reliable sealant can significantly reduce the risk of future leaks.
Experts also advise paying attention to the waterproofing of the original floor during construction, especially for windows or sunrooms. Even if the terrace is not enclosed, the existing drainage system should be inspected and maintained to prevent water accumulation. It's crucial not to damage the original waterproof layer, as this could lead to further complications.
During interior decoration, homeowners should check for holes in the kitchen walls, especially those covered with cement. These should be properly sealed to prevent water intrusion. Air-conditioning holes should also have a slight downward slope to avoid rainwater entering the room. Old air-conditioning holes should be closed and sealed properly.
Additionally, it's important to inspect pipes, ducts, and other openings for signs of leaks. A thorough inspection of the plumbing system can help identify potential issues early on, preventing costly repairs down the line.
By understanding the causes of water leakage and taking proactive steps, homeowners can protect their properties and enjoy a safer, drier living environment.
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