Bitumen — the adhesive and waterproofing backbone of asphalt roofing shingles — is a petroleum-based material that determines how well shingles can resist water, UV light, and mechanical stress.
High-purity bitumen contains fewer impurities like asphaltenes, waxes, or fillers that can compromise flexibility and adhesion over time. For Kerala’s heavy rains and intense sun, material integrity is critical for roof longevity.
Impact of Bitumen Purity on Shingle Performance
Flexibility in Temperature Extremes
Purified bitumen resists cracking in cold weather and softening in heat.
Reduces the risk of thermal cycling damage common in tropical climates.
Improved Waterproofing
Lower impurity levels enhance bitumen’s hydrophobic properties.
Maintains the shingle’s watertight seal, preventing seepage into underlayment.
Better Adhesion to Granules
Pure bitumen forms a stronger bond with the mineral granules that protect shingles from UV degradation.
Extended Service Life
High-purity bitumen slows oxidation, delaying brittleness and curling.
Testing Bitumen Purity: Industry Standards
Softening Point Test – Ensures stable performance at high temperatures.
Penetration Test – Measures flexibility and resistance to brittleness.
Fraass Breaking Point – Determines the temperature at which bitumen fractures.
Scaffs India’s High-Performance Bitumen Shingles
Architectural Roofing Shingles – Multi-layer construction with premium bitumen for superior durability.
Designer Roofing Shingles – Blending aesthetic appeal with material purity.
Performance-Grade Asphalt Shingles – Optimised for Kerala’s heat, rain, and humidity.
Bitumen Purity in Kerala’s Climate: Real-World Insights
In Scaffs India projects across Kochi, Trivandrum, and Calicut, high-purity bitumen shingles have shown:
Minimal curling even after 8–10 years.
Strong granule retention despite heavy monsoon rains.
Reduced maintenance compared to low-grade alternatives.
Conclusion
The purity of bitumen is a make-or-break factor for asphalt shingle performance. For Kerala homeowners, investing in premium-grade shingles ensures a long-lasting, weatherproof, and aesthetically appealing roof.
📞 Contact Scaffs India today to discuss roofing solutions with premium bitumen technology.