What is UL2218 Ed3

UL2218 Ed3 is a technical standard developed by Underwriters Laboratories (UL) that specifically addresses the impact resistance of roofing materials. This standard was revised and updated in its third edition to improve the testing methodology and provide more accurate performance ratings for roofing products.

Enhanced Testing Methodology

The new edition of UL2218 introduces enhanced testing methodology to better evaluate the impact resistance of roofing materials. The test involves dropping steel balls of specified sizes and weights onto samples of the material to simulate hail impact. The previous edition had limitations in the size and shape of the steel balls used, which could lead to inconsistent results. The updated standard now provides a wider range of ball sizes and shapes, ensuring more reliable and consistent testing.

Performance Ratings

UL2218 Ed3 establishes four performance ratings based on the impact resistance of roofing materials: Class 1, Class 2, Class 3, and Class 4. These ratings indicate the ability of the material to withstand impact from smaller to larger hailstones. Class 4 represents the highest level of impact resistance, making it the most desirable rating for areas prone to severe hailstorms. Homeowners and building owners can refer to these ratings to choose roofing materials suitable for their specific needs.

Benefits and Implications

The latest version of UL2218 brings several benefits and implications for roofing manufacturers, contractors, and customers. Firstly, the improved testing methodology leads to more accurate performance ratings, ensuring that materials are adequately tested and rated for their impact resistance. This allows manufacturers to better classify their products and provide accurate information to potential customers.

Contractors can utilize the UL2218 ratings to offer their customers a wider selection of roofing materials with known impact resistance levels. This helps contractors meet the specific needs of their clients and enhance customer satisfaction. Additionally, homeowners and building owners can have peace of mind, knowing that the roofing materials they have chosen have been tested and rated by a recognized authority.