Road American
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How does modified bitumen roofing esr number impact performance in modified asphalt or bitumen applications?
The ESR (Effective Stress Ratio) number in modified bitumen roofing indicates the material’s ability to withstand stress and deformation under various conditions. A higher ESR number typically signifies better performance in terms of flexibility, durability, and resistance to cracking and fatigue. This enhances the longevity of modified asphalt applications, ensuring they can effectively handle thermal expansion, contraction, and environmental stresses, ultimately leading to improved waterproofing and overall structural integrity.
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