Roofing shingle

Abstract

A roofing shingle has a folding nail-down or securing strip added to the edge of the shingle that is placed on the lower or down edge of the shingle. This folding nail-down strip is attached to the roof and then the shingle is folded up over the stip. After a row of shingles have been secured across the roof, then a second (and additional rows thereafter) are placed on the top edge of the first row. The folding nail-down strip is attached to the roof over the top edge of the first row, and the shingle is then folded up and over covering the attachment strip. Rows are similarly added until the roof is completely shingled.

Description

FIELD OF THE INVENTION

The invention relates to roofing shingles, and more particularly to a shingle that has a folding tab on at least one side to prevent, when secured to a roof, wind from entering under the shingle and removing it from the roof.

PRIORITY

Priority is claimed from Provisional Application No. 60/660,030, filed Mar. 9, 2005.

BACKGROUND OF THE INVENTION

In general roofing shingles are secured to a roof with tacks that attached the shingle at the upward side of the shingle as the shingles are mounted on the roof, beginning at the lower edge of the roof and progressing upward. The lower edges of the singles are not attached allowing a strong wind to enter under the shingle, blowing it upward and at times removing the shingle from the roof.

The following patents are describe to give a general overview of roofing inventions and are not intended to present a disclosure statement.

U.S. Pat. No. 4,672,790, entitled Multi-piece asphalt composition roofing system, describes an asphalt composition roof covering system for roofing and reroofing. The covering system is comprised of a base and a plurality of tabs cut from standard rolls of asphalt composition material. The base has first, second and third regions separated by a first and second fold so as to provide a “Z” shape. The plurality of folded tabs are inserted into the third region of the base to give a three-dimensional appearance. In addition, when the system is used for reroofing over existing shake roofs, a spacer is provided along the inclined plane of a shingle to raise the base.

U.S. Pat. No. 4,717,614, shows a rectangular shingle sheet having a butt portion which is longitudinally divided into spaced apart tab segments and an undivided headlap portion which is 1.3 to 1.5 times higher than the outward extensions of said tab segments in said butt portion; said butt portion and headlap portion carrying an asphaltic backing of varying thickness Wherein the upper area of the headlap portion which is of a height approximately equal to that of the butt portion is coated with an asphaltic backing of between about 5 and about 15 mils thickness and the remaining lower area of the headlap portion and the entire butt portion is uniformly coated with an asphaltic backing of between about 20 and about 75 mils thickness. In one embodiment, the shingle is a composite roofing shingle comprising a shingle sheet having a butt portion which is longitudinally divided into tab segments spaced apart by between about 0.5 and about 1.5 their width and an undivided headlap portion which is between about 1.3 and about 1.5 times the height of the outward extension of the tab segments in the butt portion; said butt portion and headlap portion carrying an asphaltic backing of varying thickness as described above, and a separate elongated strip underlying the tab segments which fills the space between the tabs and is secured to the shingle sheet in a position underlying the thickened asphalt coated area of said sheet. The invention also includes the process for the manufacture of the shingles of this invention.

U.S. Pat. No. 4,848,057, describes a roofing shingle consisting of composite plies of thin sheet material adhered together by asphalt having exposed areas with or without cut outs between tabs, and a flexible region at the end top of the exposed area. The top end of the cut outs may lie in this flexible region.

SUMMARY OF THE INVENTION

The invention is a roofing shingle that has a folding nail-down or securing strip added to the edge of the shingle that is placed on the lower or down edge of the shingle. This folding nail-down strip is attached to the roof and then the shingle is folded up over the stip. After a row of shingles have been secured across the roof, then a second (and additional rows thereafter) are placed on the top edge of the first row. The folding nail-down strip is attached to the roof over the top edge of the first row and then the shingle is folded up and over covering the attachment strip. Rows are similarly added until the roof is completely shingled. The shingles are place such that there are three rows of nails holding down each single, A first row of nails is from the nail down stip of the first shingle. The second row of shingles is place over the first row so that the nail down strip is approximately over the center of the first row. The third row of shingles is placed over the second row and over the top end of the first row, resulting in each row of shingles being secured to the roof at three places, each place being a nail-down strip of three different shingles.

The technical advance represented by the invention as well as the objects thereof will become apparent from the following description of a preferred embodiment of the invention when considered in conjunction with the accompanying drawings, and the novel features set forth in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 show a single shingle of the invention;

FIG. 2 is a side view of the shingle;

FIG. 3 is a side view showing the nail down strip folded;

FIG. 4 is another side view showing a variation of the nail down strip;

FIG. 5 shows the nail down strip folded;

FIG. 6 shows a cut away of a shingle and nail down strip; and

FIG. 7 shows two rows of shingles.

DESCRIPTION OF A PREFERRED EMBODIMENT

FIG. 1 is an example of a roofing shingle 10 according to the present invention. Shingle 10 has a main portion 11, which may be a three tab shingle, and a nail down strip 13 that is attached to part 11 by a flexible and bendable strip 13 between part 11 and nail down strip 13. Strip 13 can be an integral portion of the shingle, separated by a reduced thickness of the shingle that is flexible and will bend with out tearing or breaking, or may be a strip attached by a flexible material, for example, plastic, mesh screen wire, or a glass fiber reenforced material.

FIG. 2 is a side view showing the shingle 10 with part 11 and strip 12, connected by reduced thickness stip 13. In FIG. 3, strip 12 is shown folded up, which when mounted would be secured to the roof and under the edge of part 11.

FIG. 4 shows a variation of the shingle with a main part 20 and a nail down strip 21. Strip 21 is attached to shingle 20 by a flexible strip 22. Strip 22 may be, for example, plastic, mesh screen wire, or a glass fiber reenforced material. In FIG. 5, strip 21 is shown moved adjacent to shingle 20 as it would be when the shingle is attached to a roof.

The roof shingle usually consist of a base sheet, a flexible, reinforced strip glued onto the base sheet. Granules are applied to one side of the shingle, and asphalt may be applied to the other side. The nail down strip is either an integral part of the shingle, but separated from the main part of the shingle by a reduced area, or the nail down strip may be a separate part attached to the mail part by a reinforcement strip, allowing the nail down part to be folded.

FIG. 6 shows a part of a shingle 10 wherein the nail down strip 12 has been attached to a roof decking 9. In this example, roofing tacks 15 are used to secure the nail down strip 12 to the roof deck 9. The shingle part 11 is then folded up and over the nail down strip 12.

FIG. 7 shows a partial roof deck 9, with a starter strip 17 that extends along under the first row of shingles at the edge of the roof 18. Usually, the roof is cover with a felt or tar paper prior to installing the starter strip and the roofing shingles. Since each successive rows of shingles are partially off set from the preceding row, some of the shingles need to be cut into smaller lengths. On the first row (R1) of shingles, the nail down strip 12 is secured to the roof deck with roofing tacks 15. The folded edge 13 of the shingle is aligned with the edge of the roof 18. The shingle part 11 is then folded over the nail down strip 12. This is continued along the edge of the roof until the first row of shingles are in place.

A second row (R2)of shingles is then secured to the roof so that the nail down strip of the second row overlaps the first row of shingles, and is placed approximately in the middle of the first row (R1). This secures the nail down strip of the second row of shingles over the first row of shingles.

A third row (R3) of shingles is placed over the second row at approximately the middle of the second row (R2) and over the upper edge of the first row (R1). In this manner, each row of shingles is secured to the roof in three places, the front or lower edge, the middle and the upper edge. This prevents the roof shingles from being blown away in very high winds. A coating of tar adhesive may be applied to the bottom of each shingle to further secure it to the roof or felt paper there under.

This process is continued up the roof, adding overlapping rows of shingles until the roofing process is completed. Both the lower edge, middle, and upper edge of each row of shingles is firmly secured preventing wind from blowing the lower edge of the shingles upward, or completely blowing the shingles from the roof.

Claims

1. A roofing shingle, comprising: a shingle having a main body of the shingle; a nail down strip, and a flexible member of the shingle attaching the nail down strip to the main body of the shingle.

2. The roofing shingle according to claim 1, where in the nail down strip is an integral part of the shingle, separated from the main body by a reduced thickness area.

3. The roofing shingle according to claim 1, wherein the nail down strip is a separate member attached to the mail body by a flexible material.

4. The roofing shingle according to claim 2 wherein the flexible material includes, but not limited, to one of plastic, mesh screen wire, and a glass fiber reenforced material.

5. The roofing shingle according to claim 1, wherein the shingle includes a top side having a granular coating, and an opposite side having an asphalt coating.

6. A roofing shingle including: a main body of the shingle and a nail-down strip flexible attached to the main body of the shingle.

7. The roofing shingle according to claim 6, where in the nail down strip is an integral part of the shingle, separated from the main body by a reduced thickness area.

8. The roofing shingle according to claim 6, wherein the nail down strip is a separate member attached to the main body by a flexible material.

9. The roofing shingle according to claim 8, wherein the flexible material includes, but not limited, to one of plastic, mesh screen wire, and a glass fiber reenforced material.

10. The roofing shingle according to claim 6, wherein the shingle includes a top side having a granular coating, and an opposite side having an asphalt coating.

11. The roofing shingle according to claim 6, wherein the nail-down strip is on the lower edge of the shingle as it is mounted on a roof.

12. A method of attaching a shingle to a roof, comprising the steps of: placing a single with a nail-down strip on one edge of the shingle on the roof; nailing down the nail-down strip; folding the shingle upward over the nail down strip so that there is an upper edge of the single; continuing securing a row of singles side by side on the roof; starting additional rows of shingles, securing the nail-down strip of each shingle over at least one previous row of shingles, and folding the shingle of each additional row upward over the nail-down strip; and continuing applying shingles until the roof is covered.

13. The method according to claim 12, wherein when the nail-down strip is first attached to the roof, another opposite edge of the shingle is extending in a downward direction of the roof until the shingle is folded upward over the nail down strip.

14. The method according to claim 12, wherein the upward edge of each shingle in a row is secured by the nail-down strip of a subsequent row of shingles placed above and adjacent to the previous row of shingles.

15. The method according to claim 12, wherein each shingle is nailed down to the roof with three rows of nails.

16. The method according to claim 15, where each row of nails, after the first row of nails, in a shingle is from the next two rows of shingles above the shingle with the first row of nails.

17. The method of claim 12, wherein an adhesive is applied a bottom side of each shingle before it is placed on the roof.