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How Effective Are Whirlybirds At Cooling A Roof?

How Effective Are Whirlybirds At Cooling A Roof?

How Effective Are Whirlybirds At Cooling A Roof? Simply put, whirlybirds are not effective at cooling a roof. Many people who buy whirlybirds do so because they are a well-known and seemingly cheap ventilation option. Most whirly birds have an airflow capacity of 100...