Roof system

Abstract

A roofing system provides a stronger bond than conventional roof systems to withstand greater uplift pressures in hurricane force winds, while also providing a sound fire rating. The system includes a non-corrosive metal blocking structure, including a perimeter edge closure that has an anchoring flange for attachment to the roof deck, a parallel upper flange and an intermediate flange extending perpendicularly between the upper and lower flanges. The system further includes lightweight insulating concrete applied to the roof deck and filled between the upper and lower flanges of the edge closure, an inter-ply sheet applied by torch or self-adhesive directly to the insulating lightweight concrete, and a torch applied cap membrane over the inter-ply sheet. Direct attachment of the inter-ply sheet to the lightweight insulating concrete without the use of hardware fasteners preserves the integrity of the underlying lightweight insulating concrete for future re-roofing.

Description

[0001]This application is based on provisional patent application Ser. No. 60 / 744,120 filed on Feb. 16, 2006.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to roofing systems, and, more particularly, to roofing systems that use lightweight insulating concrete with an overlying inter-ply sheet and cap membrane on flat roof areas.[0004]2. Discussion of the Related Art[0005]Currently, the traditional roof system that is used on flat roof areas consists of wood blocking at the perimeter edge of the roof, a lightweight insulating concrete deck, and a base sheet mechanically fastened to the underlying lightweight insulating concrete with the use of fasteners and washers. Once the base sheet has been mechanically attached to the lightweight insulating concrete, a two ply modified roof system is applied to the base sheet. The two ply system uses an inter-ply sheet and a cap membrane and is applied using a torch heat weld or a cold applied adhesive to ...

AI Technical Summary

Benefits of technology

"The present invention is a roof system that uses a non-corrosive metal blocking system to provide increased uplift strength and a sound fire rating. It eliminates the problem of deterioration of the blocking assembly and uses a base sheet and fasteners on the lightweight insulating concrete deck to preserve the strength of the underlying lightweight insulating concrete for future re-roofs. The roof system also uses an inter-ply sheet that is torch applied or self-adhered directly to the underlying lightweight insulating concrete deck, providing a stronger bond than conventional systems. Additionally, the roof system is structured to withstand greater uplift pressures in hurricane force winds."

Problems solved by technology

This currently used roof system, as described above, has several problems.

In particular, wood, by its nature, is subject to rotting and deterioration.

Also, wood blocking is a flammable product and, thus, has an inferior fire rating.

In addition, the use of mechanical fasteners to attach the base sheet creates holes in the light concrete.

This results in weakening of the underlying lightweight insulating concrete deck.

This further compromises the strength of the lightweight concrete by adding additional holes to the lightweight concrete as a result of attachment of the new base sheet fasteners.

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