Abstract: A roof ventilation system including a prefabricated ridge vent assembly with sidewalls secured at spacers. The spacers support a top cap spaced above the sidewalls which defines a net free ventilation area. The ventilation area is screened. The ridge vent assembly is maintained by mounting blocks which are secured to the ridge vent by connectors such as 2?×4? lumber sections. The system may also utilize eave vent assemblies having a screened ventilation area. The eave vent assembly has a lip to support a trim piece such as a fascia board.

Abstract: A roof vent system having side walls which are secured in spaced-apart relationship by flashing sections to the roof ridge. Spacers are provided at spaced-apart locations. The spacers may be extruded square tubular sections, Z-sections or other configurations. A screen extends between the side walls. A roof cap has a web which is held in place between the fasteners. The roof cap has flanges at its upper end which support a roof member such as a tile in an elevated position above the ridge to provide sufficient venting.