Silicone roof coatings have gained popularity in the roof restoration industry due to their effectiveness in protecting and restoring various commercial roofing substrates. In this blog post, we will explore the pros and cons of silicone roof coatings, including their advantages and considerations.
Advantages of Silicone Roof Coatings:
- Ponding Water Resistance: Silicone coatings exhibit excellent resistance to ponding water. They are moisture-cure substances that do not absorb additional water after curing, making them highly durable and capable of withstanding the damaging effects of standing water.
- UV Protection: Silicone roof coatings reflect a significant portion of the sun’s harmful UV rays, reducing heat absorption and lowering cooling costs for facilities.
- Flexibility & Weatherability: Silicone coatings create a flexible and impermeable membrane that can endure extreme temperatures, wind-driven sand, oxidation, and thermal movements. They are well-suited for large roof structures that experience natural expansion and contraction.
- Environmental Safety: Silicone coatings, especially high-solids formulations, are environmentally friendly. They are solvent-free, contain low volatile organic compounds (VOCs), and meet or exceed material safety standards in all 50 states.
Disadvantages of Silicone Roof Coatings:
- Attracts Dirt: Silicone coatings have a tendency to attract dirt and airborne dust particles over time. This accumulation can reduce the coating’s reflective properties and increase heat absorption, leading to higher cooling costs. Regular pressure washing can mitigate this issue.
- Slippery When Wet: Silicone coatings create slippery surfaces, making them potentially hazardous for foot traffic. Using designated pedestrian traffic areas or implementing safety measures, such as the American WeatherStar Walk-Path System, is recommended.
- Limited life span compared to a new roof.
