What are the options for roof vents?
Many online resources I’ve checked seem to want to sell something. I would also like a green or responsible choice. A. You are not the first person to ask me about the mystery of the ridge roof vent. In all the years I built, installing roof vents was a standard practice, and I routinely installed continuous ridge vent on my jobs. Never did I stop to test the manufacturers’ claims; I just assumed they were accurate. Several years ago, a friend made the same observation you did. He couldn’t understand how hot air could go down through a ridge vent to exit a roof. Here’s how these vents are installed: A carpenter cuts away the top roof sheathing, leaving a 3- or 4-inch opening at the highest point in a roof. But then the roofers install the continuous ridge vent and cover that with shingles. The shingles lap down onto the roof to provide the water seal from falling rain. This means hot air needs to go up to the vent and then some way go down past the shingles before it can escape the att
