The present invention is an improvement to the downside edge of roof flashing where water, ice and humidity accumulate in the eave area of a roof. Such water, ice and humidity accumulation is undesirable as it may often cause damage to the fascia board, sheathing and under roof structure, soffits, interior and exterior ceilings and materials to the roof. Such water, ice, or humidity accumulation occurs during rain storms, snow storms, and other events such as a temperature drop below freezing after a rainstorm or a high humidity buildup which may occur on a hot day after a rainstorm. Also, wet regions such as river valleys, swampland, low lying land and the like contribute to high levels of humidity. Water, in any of these forms, (solid, liquid or vapor) have may cause rot or damage to wooden elements of the roof and supporting interior structures. Such conditions may help the growth of damaging molds or form an environment which could encourage insect or other undesirable infestations. Notwithstanding that drip edge flashings are designed to shed water away from the roof edge, it has been found that moisture and water will wick up or backflow into the roof soffit area at the eaves of a roof. The instant invention forms a water/moisture barrier intermediate the flashing and the fascia board, preventing the negative and harmful effects of moisture in the region of the roof soffit and other areas of concern.
The present invention is a gasket which can be affixed intermediate the fascia board of a house and the drip edge flashing forming a water tight seal. The gasket of the present invention can be installed during the installation of new roof drip flashings or it can be installed and added to existing roof drip flashings.
Ordinarily, the drip edge flashing extends past the edge of the roof sheathing in order to protect the roof plywood from water, snow and the like. In addition a typical drip edge flashing will extend vertically below the edge of the roof to protect at least a portion of the fascia board and exposed portions of sheathing from the elements.
The gasket of the present invention may be oval, circular or of another geometrical configuration. The gasket would be affixed intermediate the fascia board and a drip edge flashing. The gasket forms a seal to the previously exposed portions of the fascia from water wicking, humidity and other environmental intrusions. The gasket is held in place against the fascia board by adhesive or other attachment means. The gasket includes a generally L-shaped bracket which depends from the side of the gasket (the side which is not attached to the fascia board). The drip edge flashing includes a u-shaped portion on its bottom portion. The u-shaped portion of the drip edge flashing is adapted to receive the long side of the L-shaped bracket therein. The drip edge flashing keeps the gasket in place against the fascia board. Fasteners may be employed to aid in the mounting of the gasket.
The gasket may be manufactured from, but is not limited to, neoprene (polychloroprene), silicone, nitrile rubber, rubber, plastic polymers, polychlorotrifluoroethylene, and the like. Any material which is employed to manufacture a gasket which meets the mechanical and material requirements of the invention may be used. Polychlorotrifluoroethylene has the lowest water vapor transmission rate of any plastic.
Referring to
The present invention, as seen in
Attachment gasket bracket 14 includes a right angle bend, preferably factory formed, having a first gasket end 17 connected to gasket 12 and a second gasket portion end 18 constructed and arranged to fit within u-shaped vertical return portion 23. Gasket portion end 18 may be pressed or crimped within u-shaped vertical return portion 23 or may be held there within by an adhesive (not shown) or attached in other ways known in the art.
Gasket 12 is supported and held in place between vertical portion 22 and fascia board 30. Drip edge flashing 22 will exert sufficient pressure against gasket 12 pushing it against fascia board 30 so that gasket 12 will form a seal of the area inside the fascia area 7 bounded by the drip edge flashing 20, the fascia board 30 and the roof plywood 32. Additionally it may be desirable to enhance the sealed area heretofore described, to use a foam or adhesive 31 to be applied between gasket 12 and fascia board 30. Such foams or adhesives will be chosen for their water-proof or water-resistant properties.
When the drip edge flashing 20A and the support flashing 40 are affixed by fasteners 50, the two flashing elements essentially form a single flashing element.
When installed, the drip edge flashing 20A and the support flashing 40 will support the gasket 12A against the fascia board 30A forming a watertight seal.
Other means to secure the gasket (12, 12A) intermediate an outer flashing 20 and the fascia board 30 have also been contemplated. For instance, if a u-shaped vertical return portion similar to 23 was mechanically affixed to the fascia board 30, the gasket 12 with its right angled male mounting element may be reversed and the gasket would be urged toward the fascia board 30 by the drip edge flashing 20. Other methods to hang, affix, interfit or place the gasket 12 intermediate the drip edge flashing 20 and the fascia board 30 in such a fashion to block water, ice or humid air from entering the area proximal the upper fascia board 30 and the lower roof wood elements may be employed. These include, but are not limited to, a u-shaped element affixed to the fascia board 30 as well as the interior of the drip edge flashing where the gasket would include a right and a left gasket bracket, where each gasket bracket would be adapted to be retained in the two u-shaped elements. Also, a hanging device secured to the underside of the roof plywood (or other roof material) could be attached to the twelve o'clock position of the gasket.
It is to be understood that houses and buildings do not all have the same structure at the area of the terminus of the roof and the sidewall of the house. The water-proof (or water-resistant) gasket can be adapted for use in these circumstances and are considered to be part of the invention.
While the invention has been described in its preferred form or embodiment with some degree of particularity, it is understood that this description has been given only by way of example and that numerous changes in the details of construction, fabrication, and use, including the combination and arrangement of parts, may be made without departing from the spirit and scope of the invention.
This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/680,418 filed on Aug. 7, 2012, entitled Water Wick Backflow Reduction Roof Flashing, the disclosure of which is incorporated herein by reference in its entirety.
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Number | Date | Country | |
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20140041327 A1 | Feb 2014 | US |
Number | Date | Country | |
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61680418 | Aug 2012 | US |