Edge closure for roof systems

Abstract

An edge closure for installation on a roof structure is fabricated as an integral unit from a non-corrosive, durable material. The edge closure includes an anchoring flange for attachment to the roof structure, an upper flange with an upper longitudinal edge zone, and intermediate panel spanning between the anchoring flange and the upper flange, and a fascia portion integral with the anchoring flange and extending downwardly to a lower longitudinal edge zone. The anchoring flange and upper flange are spaced apart for receiving a thickness of insulative lightweight concrete therebetween. The upper and lower longitudinal edge zones are angled to provide added rigidity and strength to the edge closure.

Description

[0001]This non-provisional patent application is based on provisional patent application Ser. No. 60 / 802,240 filed on May 17, 2006.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to blocking for use in roof systems and, more particularly, to an edge closure formed as one piece from a non-corrosive, durable material, such as steel, galvanized steel, aluminum or plastic.[0004]2. Discussion of the Related Art[0005]Generally, roof systems used on most building structures, and particularly commercial buildings, require some type of blocking to provide a base for the attachment of roofing components such as, but not limited to, gravel stops, eaves, drips, fascia, gutters, vent stacks, roof top equipment, expansion joints, roof curbs, copings and cant strips. Traditionally, wood is used for roof blocking and typically consists of one or more stacked wood boards (e.g. 2 inch by 4 inch or 2 inch by 6 inch boards) that are nailed to the roof struc...

AI Technical Summary

Benefits of technology

[0010]It is a further object of the present invention to provide a non-corrosive blocking component that is formed and/or molded in accordance with desired size and configuration specifications for use as an edge closure about the sides of a roof structure.

[0011]It is still a further object of the present invention to provide a non-corrosive blocking component having a pullout resistance that is significantly greater than that of wood, thereby requiring less hardware, labor and materials for installation.

[0012]It is yet a further object of the present invention to provide a non-corrosive blocking component that encloses the edges of a roof structure and which is formed to provide added rigidity and strength.

[0013]It is still a further object of the present invention to provide a non-corrosive edge closure for a roof structure with an integral fascia portion that extends down the side of the roof structure, and wherein the fascia portion includes an outwardly angled lower longitudinal edge zone for providing added

Problems solved by technology

Despite its widespread use in roof systems, there are significant drawbacks and shortcomings associated with the use of conventional wood blocking.

In particular, wood is susceptible to damage and deterioration from moisture, termites, ants, and other natural enemies.

Further, because wood is a solid material, it does not provide for venting capabilities to permit escape of moisture and gasses from within the roof.

The lack of adequate venting is a contributing factor of premature roof failure.

Additionally, wood has limited pull-out characteristics for holding nails and

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