Zinc flashing for roof penetrations

a zinc flashing and roof technology, applied in snow traps, manufacturing tools, building repairs, etc., can solve the problems of inability the zinc flashing formed of titanium zinc alloy exhibits the same malleability problems, and cannot be used in-of-the-self to waterproof the region about the roof. , to achieve the effect of facilitating the securing of zinc flashing

Inactive Publication Date: 2010-05-06
GARLAND INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]In still another and / or alternative non-limiting object of the present invention, there is provided a zinc flashing material that is coated with a protective layer to inhibit or prevent reaction of the zinc flashing with other components of a roofing system.
[0024]In yet another and / or alternative non-limiting object of the present invention, there is provided a zinc flashing material that is used with a protective barrier to inhibit or prevent reaction of the zinc flashing with other components of a roofing system.
[0025]In still yet another and / or alternative non-limiting object of the present invention, there is provided a zinc flashing material that includes an adhesive layer to facilitate in securing the zinc flashing to a roofing system.
[0026]In another and / or alternative non-limiting object of the present invention, there is provided a zinc flashing material that is coated with a material that inhibits or prevents corrosion of the zinc flashing material.
[0027]In still another and / or alternative non-limiting object of the present invention, there is provided a zinc flashing material that includes a vertical portion that is fluted or corrugated so that the zinc flashing can be adjusted relative to roof penetrations.

Problems solved by technology

Titanium zinc alloys are not suitable for the zinc flashing of the present invention since such zinc alloys are too rigid.
Indeed, flashing formed of titanium zinc alloy exhibits the same malleability problems as flashing formed of stainless steel and galvanized steel.
For instance, primary roofing materials may be too rigid (e.g., concrete, tile, sheet metal, etc.) and / or experience significant shrinkage (e.g., asphalt built up roofing, etc.) during the useful life of the roofing materials, thus cannot be used in-of-themselves to waterproof the region about a roof penetration (e.g., round cast iron plumbing vent pipe, round PVC plumbing vent pipe, etc.).
The solidified asphalt does not have the flexibility over time that is required to maintain a seal about a roof penetration (e.g, a cast iron plumbing vent pipe, etc.) for more than a few years.
Over time, this expansion and contraction will cause the seal between the asphalt and the roof penetration to break, thereby compromising the water-proofing of the roofing system.
Indeed, the zinc flashing will far outlast the useful life of a built-up roofing system and many other types of roofing systems.

Method used

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  • Zinc flashing for roof penetrations
  • Zinc flashing for roof penetrations
  • Zinc flashing for roof penetrations

Examples

Experimental program
Comparison scheme
Effect test

example a

[0053]

ComponentWeight Percentzinc91.1-99.99%aluminumup to 0.9%cadmiumup to 0.9%chromiumup to 0.9%copperup to ironup to 0.9%leadup to 0.9%magnesiumup to 0.9%nickelup to 0.9%tinup to 0.9%titaniumImpurities

example b

[0054]

ComponentWeight Percentzinc91.1-99.9%aluminumup to 0.7%cadmiumup to 0.7%chromiumup to 0.5%copperup to 0.7%ironup to 0.5%leadup to 0.7%magnesiumup to 0.5%nickelup to 0.5%tinup to 0.7%titaniumup to 0.12%Impurities

example c

[0055]

ComponentWeight Percentzinc91.2-99.9%aluminumup to 0.5%cadmiumup to 0.5%chromiumup to 0.3%copperup to 0.5%ironup to 0.3%leadup to 0.5%magnesiumup to 0.3%nickelup to 0.3%tinup to 0.5%titaniumup to 0.1%Impurities

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Abstract

An improved zinc flashing system for use with metal and non-metal roof systems. The improved zinc flashing system includes a base plate that includes an aperture and vertical tube that is attached to the base plate. The vertical tube form extends upwardly from the upper surface of the base plate or downwardly from the bottom surface of the base plate. The zinc flashing system is designed to form a water-tight seal about a roof penetration and/or a roof drain. A protective layer can be used to inhibit or prevent contact of the zinc material of the zinc flashing with a roofing structure. The protective layer can be connected and/or coated to the zinc flashing.

Description

[0001]The present invention claims priority on U.S. Provisional Application Ser. No. 61 / 109,641 filed Oct. 30, 2008 entitled “Zinc Flashing for Roof Penetrations,” which is incorporated fully herein by reference.[0002]The present invention is generally directed to flashing for roofing systems, more particularly to flashing that is used about roof penetrations, and even more particularly to zinc flashing that is used about roof penetrations.BACKGROUND OF THE INVENTION[0003]Currently, soft lead flashing is the common choice for flashing materials. Lead flashing is used because it is malleable, thus is easy to form the lead flashing to the surface of a roofing system and about various structures on the surface of the roofing system. As such, lead flashing is relatively easy to integrate between layers of roofing material and the lead flashing also easily conforms to irregular shapes on the surface of the roofing system. Roof flashing can also be formed by other materials such as stainl...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E04D13/14E04B1/68
CPCE04D13/0409E04D13/1475E04D13/1476E04D2013/0436Y10T428/12361
Inventor MULLIGAN, JAY EUGENE
Owner GARLAND INDS
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