"In contrast to traditional roofing membrane materials that would require frequent replacement, tests prove that SHEERFILL Architectural Membranes provide up to 25 years or more of reliable service. There is no relaxation of the re-tensioned membrane from its original shape, even after years of withstanding high live loads, such as heavy snows and high winds. This keeps maintenance costs low, not requiring retensioning of the membrane"
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Oh dear. What is the definition of 'high winds' ?.