SmartVent Systems by DCI
SmartVent is a tapered, under shingle plastic product designed for installation along the soffit edge of the roof or the facing edge of dormer rakes and goes virtually unnoticed. It allows air to flow freely through the 1″ roof decking slit providing more than adequate soffit ventilation to maximize ridge vent effectiveness. This is extremely important since most ridge vent products require an equal amount of ventilation at the soffit in order to work properly. SmartVent, when used at both soffits, has a total NFA rating of 18 sq. in. per foot(or 9 sq. in. on each side of a standard gable roof).
SmartVent is a patented roof and attic ventilation product that provides the best passive attic ventilation available. Using a unique design and installation method, SmartVent eliminates the problems and inefficiencies found in roof construction using ridge and soffit venting, namely inadequate vent openings in the soffit.