Cracks

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OSHA sends roofers a firm message on violating safety measures

Concurrent with the expiration of OSHA's temporary enforcement measures, the... More

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Roofs that resist one hail of a test storm

Firing 72 barrels from a dozen "hail cannons," researchers sent some 10,000 ice balls onto the roof of a full-scale house. It was the first-ever indoor hailstorm, designed to evaluate how well roofing and other building materials can withstand the ravages of a full-blown hailstorm. More

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