The application of waterproof coatings is closely related to the condition of the base surface. A well-prepared base layer ensures better adhesion and coverage. If the base is uneven, more coating material will be needed. Therefore, before applying any waterproofing, it's essential to properly prepare and smooth the surface as much as possible. Additionally, the surface should be clean, free from dust, dirt, and oil. You can use a mop or brush to thoroughly clean the area. If not done properly, the coating may crack, reducing its effectiveness and leading to leaks.
When choosing waterproofing products, it's important to understand their properties. On the market, there are various types such as slurry-based, cementitious, and emulsion-based coatings. These are often categorized into Type I and Type II. Some people suggest that Type II is more suitable for indoor use, but according to professionals, the key factor is the type of coating—whether it's rigid or flexible. Look at the ratio of cement to emulsion, such as 12kg + 8L. Some products are labeled as "kitchen and bathroom" specific, but in reality, general-purpose indoor waterproofing can also be used in these areas. It’s always best to check the product specifications and ensure they meet your needs.
Key Points for Waterproof Coating Application
Modern waterproofing materials have evolved significantly, with polymer cement-based coatings offering excellent performance and ease of application. These coatings typically last around 20 years with proper installation. Here are some essential construction tips:
1. Apply the coating when temperatures are above 5°C. Avoid applying if rain is expected within the next 24 hours.
2. Brush the coating both horizontally and vertically, allowing at least 4 hours between coats for proper drying.
3. If the project has special requirements, consider applying an extra coat for added protection.
4. In high humidity or low temperature conditions, extend the drying time accordingly.
5. If the temperature is high during application, you can add a small amount of water to the mixture to reduce viscosity and make it easier to apply.
Proper preparation and attention to environmental conditions are crucial for achieving long-lasting and effective waterproofing results. Always follow the manufacturer's instructions and consult a professional if unsure about the process.
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