Waterproofing Colored Steel Roof Tiles with Polyaspartic Polyurea
Many buildings, for aesthetic appeal, use colored steel on their rooftops, particularly on steep roofs of villas or factories. Although colored steel sheets are processed with various paints for durability and water resistance, weather-induced damage, such as rusting, expansion, and contraction, can lead to leaks. Well-designed colored steel roofs rarely leak, and if they do, the affected parts can be easily replaced or temporarily welded. However, extensive corrosion or age-related leaks can be problematic and expensive to waterproof. Therefore, early-stage waterproofing is crucial.
1. Assessing the Need for Waterproofing on Colored Steel Roofs
To maintain a colored steel roof, don't wait for leaks before considering waterproofing. Here’s how to determine if maintenance or waterproofing is needed:
- Color Changes: If the coating on the rooftop colored steel appears powdery, faded, or discolored, it's time for maintenance or waterproofing.
- Rust Spots: Rust spots, often due to paint peeling or poor drainage, are early signs of leaks and should be addressed immediately.
Knowing how to assess the condition of your colored steel roof is pivotal in choosing the right waterproofing material.
2. Drawbacks of Current Waterproofing Materials for Colored Steel Roofs
- Traditional Sealants: Prone to aging and temperature effects. Sealants shrink upon setting, causing detachment from the frame, and prolonged exposure accelerates aging, which leads to a loss of effectiveness.
- Traditional Waterproof Coatings: Low elongation rates can cause cracks due to roof vibrations, and traditional coatings tend to age and crack when exposed to the elements.
The innovative Polyaspartic Polyurea waterproof coating addresses these issues:
- Local Seam Coating: Applying Polyaspartic Polyurea over a 15-20 cm area along the seams seals gaps between tiles. Its elastic properties prevent cracking from thermal expansion, effectively preventing leaks.
- Full Roof Coverage: A comprehensive coating plan, tailored to the project, prevents paint degradation from exposure and extends the life of the colored steel tiles by over 20 years, reducing the need for frequent replacements and saving costs.
Benefits of Polyaspartic Polyurea Waterproof Coating:
- Provides long-term outdoor protection against sunlight.
- Exhibits excellent adhesion to metal substrates, preventing peeling, cracking, and leaks.
- Overcomes the 'low strength' issue of traditional coatings, providing a high-elasticity, high-strength film to prevent leaks caused by deformation of colored steel tiles.
- Unaffected by temperatures as low as -35°C, addressing winter cracking issues without frequent repairs.
- Combines waterproofing with aesthetic options, available in various colors.
- Eliminates the fast gel time and need for specialized equipment commonly required with traditional polyurea.
Polyaspartic Polyurea's advantages are not limited to waterproofing; it also excels in anti-corrosion and flooring projects.
Feiyang has been specializing in the production of raw materials for polyaspartic coatings for 30 years and can provide polyaspartic resins, hardeners and coating formulations. Some of our polyaspartic coating formulations: Polyaspartic Coating
Feel free to contact us: marketing@feiyang.com.cn
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