A roof ventilation system for asphalt shingle or composition roofs which include a vent slot located through the roof structure along a roof ridge is provided. An unrollable vent assembly that is installable in one piece is formed from an upper water barrier having first and second vent arrangements connected thereto, and each of the first and second vent arrangements include at least two continuous longitudinal strips of a vent material with a continuous longitudinally extending space therebetween separating the strips. The strips and the longitudinally extending space are positionable on the roof parallel to the ridge so that the first and second vent arrangements are located on each side of the ridge vent slot, respectively. The vent system prevents ingress of moisture and debris, and the upper water barrier extends between the first and second vent arrangements and over the vent slot in the installed position.

Greenhouse comprised of a ridge beam extending some distance above its roof defining two elongated side zones at either side of the ridge beam. The ridge beam is comprised of one or more elongated hollow spaces and with one or more closable openings in both side zones. The openings fluidly connect the exterior of the greenhouse with its interior and may be closed at one side and opened at its other side depending on the direction of the wind.

A roof ridge and hip ridge vent system for contoured roofs which include a vent slot located through the roof structure. A contoured roofing material forms the roof surface. Vent strips are provided on the roof surface that extend on each side of the vent slot. The vent strip is comprised of synthetic fibers that are randomly aligned into an open web by an air flow and then joined by a phenolic or latex binder to form an air permeable mesh material having a generally uniform thickness, a density of about 0.08 to 0.1 grams per cubic centimeter (1.3 to 1.6 grams per cubic inch), and a crush recovery of at least 80%. A first longitudinally extending groove extends from the bottom surface about 40% to 60% of a height of the vent strip and is located a distance of at least about 1 inch from a downslope side.

A vent is disclosed that is particularly suited to use in ventilating attic spaces beneath a hip roof. The vent is configured to be installed along a hip of the roof overlying and covering a ventilation slot formed through the roof deck along the hip. The vent includes an elongated laterally flexible top panel from which baffle arrays depend. The baffle arrays are formed of a plurality of depending arcuately curved vanes that arc away from the vent. The vanes are aerodynamically shaped to redirect wind-blown rain and snow away from the vent and are configured to block the migration of rain and snow through the vent. A pair of spongy conformable filler strips is attached beneath the edge portions of the vent. The filler strips conform to the shapes of underlying shingles when the vent is installed to fill any gaps that otherwise might be formed between the vent and the shingles. A weather filter drapes over some of the baffle arrays to allow attic air to pass but prevent ingress of blown snowflakes and raindrops.

An improved roof ridge cover. The roof ridge cover is formed to give the visual appearance of multiple shingles. The edges of the roof ridge cover wrap around existing roof shingles. The cover is stone coated to provide similar appearance to the adjacent roof shingle surfaces. Optional venting material may be used under the cover to allow air to vent from the attic thereby allowing the attic to breathe, although the vent material is sufficiently dense to prevent insects and bugs from passing through the vent material.

A roofing system in a building structure having a ridge vent includes strips of composite material having a base material adapted to form a hermetic seal with the top surface of a roofing section and recesses in a top surface in which an air permeable material can be positioned. A strip is applied to roof sections adjacent to each side of a ridge vent so that a ridge cap can overlay the strips in spaced relation from the underlying roof sections and be sealingly secured to the roof sections. The strip material establishes a barrier between the ridge cap and the roof sections through which air can pass, but through which the passage of rain and insects is inhibited.

This invention is an envelope-structure interface, enabling the use of exterior insulation and pressure-equalized cladding with a post-frame structure. The present invention includes the following interface details: a continuous roof-to-wall water, vapor, and air impermeable weather barrier that is fully adhered to sheathing exterior of framing, girts, and purlins; continuous roof-to-wall insulation exterior of weather barrier that is mechanically fastened back to the post-frame structure; and removal of the requirement for an interior finish material in a conditioned post-frame building. The invention brings superior envelope performance to the structural and material efficiency, rapid rate of construction, and affordability of post-frame techniques.

A rafter vent system suitable for valley roof or hip roof construction, the system having at least one rafter bypass channel member in fluid communication with rafter vent members positioned between adjacent hip or valley rafters, the rafter bypass channel member providing a bypass channel for passage of ventilating air along a hip or valley rafter, such that a passageway is created extending between eave vents and ridge vents.

The present invention is a heat extraction, waterproof, and daylighting roof device, which includes a water leakage top assembled above a roof. The water leakage top has a first air vent and a left end edge. A left extension water leakage top, a right extension water leakage top, an expel air vent, and a guide plate are mounted above the first air vent, and water leakage holes are provided between the left extension water leakage top and the water leakage top. The guide plate is positioned below the expel air vent; the guide plate is provided with an upward facing right crooked plate and an upward facing left crooked plate on two sides thereof. The left crooked plate is provided with a plurality of overflow holes, during heavy rain, the guide plate provides a function similar to an overflow container that prevents spilling over to the first air vent.

Ridge vents are configured to cover an open ridge of a roof and allow a flow of air to exit from the open ridge through the ridge vents. The ridge vents include a projection and a projection receiving area. When a first ridge vent is secured over a ridge opening, the projection of a second ridge vent is at least partially receivable in the projection receiving area of the first ridge vent.