Venting the Roof: When, Where, and How with Nicholas Papa

Do you know exactly how vertical ventilation works? Depending on your level of experience, you may think you do, but you still might not have a really solid understanding of why it works. Simply cutting a random 4x4-foot hole in the roof won't do the job in all cases. My guest today has a good deal of experience as a firefighter, but he admits that, until he saw a live fire test, he misunderstood…