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When investing in a new roof, especially in regions prone to extreme weather, hail resistance is a top priority. But do lab-certified impact ratings truly reflect how shingles perform under real-world hailstorms? Let’s explore how hail-resistant roofing shingles hold up when tested in controlled environments versus the unpredictable conditions of actual storms.
Understanding Hail-Resistance Ratings
Roofing shingles are typically rated for impact resistance based on UL 2218 testing standards. This involves dropping steel balls of varying sizes from predetermined heights onto shingles to simulate hailstone impact. Products are then rated from Class 1 to Class 4, with Class 4 offering the highest impact resistance.
➡️ See: Architectural Roofing Shingles in Kerala
Limitations of Lab Tests:
Uniform Impact Conditions: Real hailstones vary in size, shape, and velocity.
No Cumulative Damage Simulation: Lab tests don’t replicate multiple hail strikes over time.
Material Aging Ignored: Tests are conducted on new shingles, not accounting for weathered materials.
Real-World Hail Performance: Field Data Insights
Field studies across hail-prone regions have revealed that:
Installation quality plays a critical role in how shingles withstand hail.
Aged shingles often respond differently than new ones, with flexibility loss increasing susceptibility to cracking.
Roof pitch and design can either mitigate or worsen hail impact damage.
At Scaffs India, we’ve observed similar trends in roofing projects across Kerala’s hybrid climates, where shingle performance often depends on both material strength and installation expertise.
➡️ Explore: Premium Designer Roofing Shingles in Kerala
Best Hail-Resistant Shingles Tested in Both Lab and Field:
1. CertainTeed NorthGate® SBS Shingles
UL 2218 Class 4 rating
Rubberized asphalt composition enhances flexibility
Proven resilience in real hailstorms exceeding 2 inches in diameter
2. GAF Timberline® AS II
Advanced Protection® Shingle Technology
Double-layer construction that absorbs multiple hail impacts without granule loss
3. Owens Corning TruDefinition® Duration FLEX®
Blends polymer-modified asphalt with standard fiberglass base
Excels in both lab impact tests and real-world hailstorm case studies
➡️ Related: Asphalt Traditional 3-Tab Roofing Shingles in Kerala
Do Ceramic Roof Tiles Offer Better Hail Resistance?
Interestingly, high-density ceramic roofing tiles like the BorjaEXTREM® series by Tejas Borja provide remarkable impact resistance, often surpassing asphalt shingles. Their heavy mass and dense composition minimize penetration from larger hailstones, making them an excellent option for villas and luxury homes.
➡️ Read More: BorjaEXTREM® Tejas Borja Roofing Tile Kerala
How Scaffs India Ensures Real-World Hail Protection
Beyond material selection, installation techniques, accessory systems, and ventilation design directly impact hail resilience. Scaffs India incorporates:
Specialized underlayment membranes for added impact absorption
Properly aligned ridge caps and hip shingles to minimize vulnerable edges
Real-world performance tracking of products in Kerala’s diverse weather zones
➡️ Browse: Accessory Products
Key Takeaways:
Lab tests (UL 2218) provide a standardized benchmark but don’t fully predict real-world performance.
Installation expertise, roof design, and aging factors are equally crucial.
For Kerala’s complex climate, combining Class 4 impact-rated shingles with durable installation accessories ensures the best hail resistance.
➡️ Our Services
➡️ Contact Scaffs India for Hail-Resistant Roofing Solutions
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At Scaffs India, we provide comprehensive roof inspection and repair services. Our team will assess the damage and ensure your roof is in top condition. Learn more about our roof repair services.
Scaffs India is your go-to expert for premium roofing shingles in Kerala—combining aesthetics, performance, and protection for every project.We invite you to explore some of the beautiful roofing choices.For more information regarding how IKO Roofing shingles can be used for your roofing project, visit our
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