| 摘要 |
The present invention provides a roof ridge vent system for asphalt shingle or composition roofs which include a vent slot located through the roof structure along the roof ridge. Vent strips, each comprised of a vent material having an upper water barrier connected to an upper surface thereof are provided on each side of the vent slot to prevent ingress of moisture and debris. The upper water barriers extend beyond the vent material and over the vent slot where they overlap one another. Alternatively, a single water barrier is provided which extends from a first vent strip and bridges the roof ridge and contacts the top of a second vent strip on an opposite side of the vent slot. A mesh screen is attached to respective exposed surfaces of the vent strips to further prevent ingress of moisture and debris. A ridge cap is installed over the vent strips. A water dam may be connected to a lower surface of the vent strip, and extend in an up-slope direction under the ridge cap to further prevent ingress of moisture.
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