History: Ridge vents exhaust the attic air throughout the prime of the roof. Correct ventilation is good for the house, health from the attic and life expectancy of the roof. Metal ridge vent & rolled ridge vents are probably the most problematic. Metal ridge vents are light-weight and product of https://commercialroofer33209.azzablog.com/37500233/the-ultimate-guide-to-rockville-maryland-gutter-and-roof-repair