Above sheathing ventilation system

摘要

A roof structure and a vented eave riser are described. A vented eave riser can include a barrier wall with one or more air flow openings, and an ember impedance structure positioned proximate to the barrier wall. A roof structure may comprise a roof deck and a layer of roof cover elements spaced above the roof deck to form an air layer between the roof deck and the roof cover elements. The roof structure may also comprise one or more vent members each replacing and mimicking an appearance of one or more roof cover elements of the layer of roof cover elements, and/or at least one vented eave riser positioned at an eave between the roof deck and the layer of roof cover elements. The vent members and/or the vented eave riser may further include an ember impedance structure, such as a fire-resistant mesh material or a baffle structure.

主权项

1. A vented eave riser, comprising:
a barrier wall adapted to fit between a roof deck and one or more roof cover elements of a roof, wherein the barrier wall comprises one or more openings permitting air flow through the barrier wall; an ember impedance structure comprising a mesh material positioned proximate to the barrier wall, the ember impedance structure substantially preventing ingress of floating embers through the ember impedance structure, while permitting air flow through the ember impedance structure; a base; and a plurality of retention structures, wherein the barrier wall and the retention structures extend upwardly from the base such that the mesh material can be retained between the barrier wall and the retention structures.