Lap siding product with snap break

Abstract

A lap siding product with a central face cut or medial groove, allowing an installer or user to break the lap siding product in half manually, without tools, resulting in two pieces of lap siding. The central face cut or groove extends for the length of the product, and its depth is a substantial portion of the thickness of the lap siding product. A central back cut or medial groove opposite to the central face cut or groove may be provided, as well as a pair of back spacing cuts or rabbets along the edges of the back face of the product. A pair of machined nail lines on the face of the product assist in determining locations for nailing the post-break pieces of lap siding during installation.

Claims

1. A lap siding product, comprising: a board with a length, a front side and a back side with a thickness therebetween, and a first edge and a second edge with a width therebetween; a first medial groove in the front side extending the length of the board, said first medial groove having a depth extending half or more of the board thickness; a first rabbet in the back side extending the length of the board along the first edge; a second rabbet in the back side extending the length of the board along the second edge; and a second medial groove in the back side extending the length of the board wherein the second medial groove has a depth extending less than half of the thickness of the board.

2. The lap siding product of claim 1, wherein the board is configured to be divided along the first medial groove into a first lap siding piece and a second lap siding piece.

3. The lap siding product of claim 1, wherein the board is finished or painted, in whole or in part.

4. The lap siding product of claim 1, wherein the board is unfinished.

5. The lap siding product of claim 1, wherein the first medial groove depth extends from about 75% to about 85% of the thickness of the board.

6. The lap siding product of claim 1, wherein the first rabbet and second rabbet have a depth extending less than half of the thickness of the board.

7. The lap siding product of claim 1, wherein the first rabbet and second rabbet have a depth extending approximately one-quarter of the thickness of the board.

8. The lap siding product of claim 1, wherein the second medial groove depth extends from about 5% to about 10% of the thickness of the board.

9. The lap siding product of claim 1, wherein the second medial groove is aligned with the first medial groove in the front side.

10. The lap siding product of claim 1, further comprising a first nail guide line and a second nail guide line extending on the front side for all or substantially all of the length of the board.

11. The lap siding product of claim 10, wherein the first and second nail guide lines are substantially parallel to the first medial groove.

12. The lap siding product of claim 11, wherein the first nail guide line and the second nail guide lines are on opposite sides of the first medial groove.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a cross-section view of a lap siding product in accordance with an embodiment of the present invention.

(2) FIG. 2 shows a cross-section view of a lap siding product in accordance with another embodiment of the present invention.

(3) FIG. 3 shows a cross-section view of another embodiment of a lap siding product.

(4) FIG. 4 shows a perspective view of the lap siding product.

(5) FIG. 5 shows a cross-section view of the lap siding obtained from the lap siding product installed upon a vertical wall.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

(6) In various exemplary embodiments, as seen in FIGS. 1-4, the present invention comprises a lap siding product 10 (which may be comprised of wood, manufactured wood or lignocellulosic material, plastic, composite, combinations thereof, or other suitable material). Prior to installation, the lap siding product comprises an elongated panel or board with a face or front side and a back side. In several embodiments, the lap siding product is prefinished (i.e., painted, treated, etc.) along one or both sides. The lap siding product also may be unfinished.

(7) The front side comprises a central face (or front side) cut 20, which allows an installer or user to break the lap siding product in half manually, without tools, resulting in two pieces of lap siding 10a, 10b. The central face cut 20 extends for the length of the product, and its depth is a substantial portion (e.g., greater than 50%, 75%, or 80%) of the thickness of the lap siding product. The central face cut 20 may be the sole central cut, although in several alternative embodiments, a central back (back side) cut 22 opposite to the central face (front side) cut 20 may be provided. The central back side cut may be aligned with the central face cut, and has a depth less than the central face cut, and less than half the thickness of the product. In one exemplary embodiment, the central back cut has a depth of from about 5% to about 10% of the thickness of the product. The combination of the face cut and back cut result in an easy manual break that is much cleaner (i.e., with smoother edges, fewer splinters, etc.) than a single cut.

(8) The lap siding product further may comprise a pair of back spacing cuts 40 along the edges of the back face of the product. The back spacing cuts extend the length of the product, extend internally, and assist in horizontal location of the pieces of lap siding (i.e., after manual breaking) with respect to each other during installation, as seen in FIG. 5. During installation, the outside edges of the lap siding product become the bottom edge of the respective pieces of lap siding, while the broken center face cut becomes the top edge of the respective piece of lap siding The back spacing cut of a piece of lap siding thus is positioned along the bottom of the lap siding, and the inner edge of the back spacing cut sits or rests on the top of the lower (already-installed) piece of lap siding.

(9) The back spacing cuts extend along all or substantially all of the respective edge of the product, and inward for some distance towards the center of the product. The width and depth of the back spacing cuts may vary based on the type of lap siding, and may even vary on the same piece of lap siding product, although, as seen in FIG. 2, the width and depth of the back spacing cuts may be the same. In several embodiments, the back spacing cuts extend inward for about 15% to about 25% of the width of the respective lap siding piece (i.e., about 7.5% to about 12.5% of the width of the product pre-installation). In the embodiments shown in FIGS. 2 and 3, the back spacing cuts extend inward for about 18% to about 19% of the width of the respective lap siding piece. In several embodiments, the back spacing cuts may have a depth of half or less of the thickness of the lap siding, more preferably 20% to 35% of the thickness, or, as shown in FIGS. 2 and 3, about 25% of the thickness.

(10) The lap siding product also may comprise a pair of machined nail lines 30 on the face of the product, which may extend all or substantially all of the length of the product. The nail lines assist in determining locations for nailing the post-break pieces of lap siding during installation. In one exemplary embodiment, the nail lines are located parallel to the central face cut at a distance less than the width of the back spacing cuts (in one preferable embodiment, about three-quarters to one inch from the central face cut, as seen in FIG. 2). During installation, the nail line of each piece of installed lap siding, and the nails used, thus are covered by the bottom edge of the overlapping lap siding piece above it.

(11) In addition to ease of use in the field during installation, the lap siding product described herein also results in substantial savings and efficiency during manufacture. Instead of line production of prefinished lap siding pieces individually, the present invention allows the production of two prefinished lap siding pieces as a single product, thereby doubling the finishing line output rate, and resulting in an approximately 50% reduction in variable labor and energy costs.

(12) The dimensions of the product, and the resulting pieces of siding, may vary. For example, in the embodiment shown in FIG. 1, the product is 0.35 inches thick, 12.125 inches wide, and 12 feet long. The central face cut is 0.125 inches wide, and is approximately 0.29 inches deep, and allows the product, when snapped in half, to form two pieces of siding approximately 6 inches wide and 12 feet long. The back spacing cuts are 0.075 inches deep, and 1.25 inches in width. The nail lines are 0.040 inches deep and are located 1.063 inches from the center of the product.

(13) Alternatively, in the embodiments shown in FIGS. 2 and 3, the product is approx. (0.375 or 0.370) inches thick, 11.875 inches wide, and 12 feet long. The central face cut is 0.125 inches wide, and is approximately 0.30 inches deep. The central back cut is 0.125 inches wide, and is approximately 0.025 inches deep. When snapped in half, the product to form two pieces of siding approximately 5.9 inches wide and 12 feet long. The back spacing cuts are 0.095 inches deep, and 1.125 inches in width. The nail lines are located 0.9375 inches (FIG. 2) or 0.8125 niches (FIG. 3) from the center of the product, and form a V-shaped 60-degree notch 0.040 inches deep.

(14) In one embodiment, the method of use of the present invention comprises providing a prefinished lap siding product as described herein, manually snapping the product in half along its length without the use of tools into a first piece 10a and a second piece 10b, nailing (using the nail lines as guides) the first piece into place laterally on a wall or vertical structure with the face side outward and the back spacing cut positioned along the bottom and facing inward, aligning the second piece into an overlapping position above the first piece, and nailing (using the nail lines as guides) the second piece into place overlapping the first piece. A vertical series of overlapping siding pieces can thus be installed, each piece extending laterally, as seen in FIG. 5.

(15) In several embodiments, due to the positioning and depth of the central front side cut and the depth of the spacing cuts, any residual ridge left in or near the central front side cut when the product is broken or divided into two pieces is located behind the back side of the overlapping lap siding piece when installed, so that the ridge does not interfere with installation. When a central back cut is used (to assist in ease of dividing the product by hand), the resultant ridge is located along the resulting top edge of each lap siding piece, but towards the back, so that it remains located behind the back side of the overlapping piece when installed.

(16) Thus, it should be understood that the embodiments and examples described herein have been chosen and described in order to best illustrate the principles of the invention and its practical applications to thereby enable one of ordinary skill in the art to best utilize the invention in various embodiments and with various modifications as are suited for particular uses contemplated. Even though specific embodiments of this invention have been described, they are not to be taken as exhaustive. There are several variations that will be apparent to those skilled in the art.