US1694521A - Flashing structure - Google Patents

Description

Dec. 11, 1928. v

E. M. TUCKER FLASHING STRUCTURE Filed Jan. 17, 1927 //VV/VTO1 y W Y L W HIS ATTOQNEY.

Patented Dec. 11, 1928,

UNITED STATES PATENT OFFICE.

EDGAR M. TUCKER, OESOUTH PASADENA, CALIFORNIA, ASSIGNOR TO THE IPARAFFIN E COMPANIES, INCL, OF SAN FRANCISCO,

WARE.

CALIFORNIA, A CORPORATION OF DELA- Application filed January 17, 1927. Serial No. 161,492.

My invention relates to flashing structures, and particularly to a double seal counterfiashing.

An object of my invention is to provide a flashing structure for use on a roof where no reglet or other provision has been made for the insertion of the usual counterflashing.

A- further object of the invention is to pro vide a double waterproof seal for the roofing My invention possesses other ob ects and valuable features, some of which, with the foregoing, will be set forth in the following description of the preferred form of my invention which is illustrated in thedrawing accompanying and forming part of the speeificationl It isto be understood that I do not limit myself to the showing made by the said drawing and description, as I may adopt variations of the preferred form with-r in the scope of my invention as set forth in the claims.

Referring to the drawing: The figure is a perspective View of a piece.

of my counterfiashing applied to the pro-,

tection of the upturned ends of sheets of flexible roofing. One of the fastening means is shown in section.

Broadly,.the flashing structure of my in 80 vention comprises ametal strip, preferably of galvanized iron or other rust resisting material, and having therein a succession of apertures in a line parallel to the upper edge of the strip, to receive nails or other 85 suitable means of attaching the strip to its substructure. An outwardlyfiextending corrugation runs longitudinally of the strip between the line of apertures and the upper edge of the strip and the upper edge is also 40 preferably turned outwardly to form a lip. Thus two longitudinally disposed recesses are provided between the strip and the wall forthe reception of a plastic sealing material. The lower edge of the strip is adapted' to overlie the upturned edge of the roofing, which may be the flexible roof covering of common usage, and thus forms an apron therefor. My invention is used to provide a double waterproof seal 1 for the upturned 0 ed e of the roof covering, wherever any object, such as a chimney or parapet wall, "projects from the flat surface of the roof,

In its presentembodiment, my counterflashing is shown in conjunction with a parapet wall 6, projecting'above a roof 7 Overlying the roof are one or more sheets of flexible covering 9, having its edges 11 turned up against the parapet Wall 6.

My counterflashing comprises a strip 12 of sheet material resistant to deterioration by the weather, such for'example as galvanized iron. This strip is adapted to be secured to the wall so that its lower edge 13 overlies and supports the upturned edge 11 of the roof covering, providing an apron therefor. Means are provided for attaching the strip tp the wall. Punched in a line preferably parallel to the edges of the strip are a succession of apertures, each adapted to receive a nail 16, which is driven 'thru the aperture into an expansion bushing 17 seated in an associated aperture 18 drilled in the parapet wall. The bushing is split longitudinally, and the parts held together by a band 1 9 of relatively soft metal, such as lead. The bore of the bushing is less than the diameter of the nail; therefore, when the nail is driven home, the parts of the bushing are forced apart, causing the band 19 to expand to fill the hole 18, thus clamping the nail tightly in place.

A longitudinally disposed, outwardly extending corrugatibn 21 between the row of apertures and} the upper edge 22 of the strip and having its upper ridge adapted to lie against the wall, provides a recess between the strip and the wall for the reception of a waterproof plastic sealing material 23.

This recess ordinarily is filled before the stri is fastened in place; but it can easily be lled afterwards if desired. This latter operation is facilitated by having the upper edge 22 bent outwardly in a lip to form a,

second recess open at the top.. Any suitable tool can be inserted back of this lip, and. the parts sprung away from the wall far enough to permit the plastic material to be forced into the lowerrecess. the first filling of the recesses complished in this way,

Not only can be easily acbut the supply of plastic material'in the recesses can be re-' plenished in a similar manner at any time. Because the strip is possessed of a certain degree of resilience, and because it is supported at a point below the corrugation, the upper edge may be sprung away from the wall without permanent deformation of the strip. v

mains pliable and adapted to fill automati cally any opening which may appear.

Not only does my counterfiashing permit.

the secure double sealing of the roofing edge where no reglet has been let into the parapet wall to receive it, but the counterflashmg lends itself to application in positions not possible with other structures because of their more complex construction. Furthermore, it is cheaply rolled from a single strip of metal, and because of the ease of cutting the strip, it is readily applied in corners and around chimneys and other irregular places.

I claim:

1. A counterflashing comprising a strip of sheet metal adapted for fastening to a wall over the exposed ends of a covering, and having adjacent its upper edge a longitudinally disposed outwardly extending corrugation to provide a recess between the strip and the wall, and having the upper edge turned outwardly to provide a second recess open at the top, said recesses being adapted to be filled with a plastic sealing material.

' 2. A vedunterfiashing comprising a strip of sheet metal having a succession of apertures therein for the reception of means to fasten the strip on a wall; and a longitudinally disposed outwardly extending corrugation to provide a recess between the strip and the wall disposed between said apertures and the upper edge of the strip, said strip having its upper edge turned outwardly to provide a second recess open at the top, and said recesses being adapted to be filled with a plastic sealing material.

3. A counter-flashing comprising a strip of sheet metal adapted for fastening to a wall over the exposed ends of a, covering, and having adjacent its upper edge a longitudinally disposed outwardly extending corrugation having its upper ridge adapted to lie against the wall to provide a recess be tween the strip and the wall for the reception of a plastic sealing material.

In testimony whereof, I have hereunto set my hand.

EDGAR M. TUCKER.

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