Five flashed or fifty unflashed per box. The One Way MVents are most commonly used in re-roofing applications. One Way MVents allow for continual release of vapor from within the system, while maintaining the watertight integrity from the outside. These MVents are typically used at the rate of one vent per 1,000 square feet of roof surface, or as specified by the roofing material manufacturer or system specifier. Spun aluminum design eliminates seams and soldered joints.
Application is quick and easy, saving labor costs.
Allows crew to complete detail work as job progresses. MVents promote quality by eliminating call backs and leaving neat, uniform flashing details. Install insulation, base sheet and field membrane according to manufacturer's specifications. Mark locations to be vented per specification. Next, heat the bottom of the flashing membrane attached to the One Way MVent until it has a similar sheen.