This specification relates to sheathing systems for buildings. More particularly, the present specification relates to brackets for holding sheathing on buildings.
The installation of sheathing on buildings, typically oriented strand board (OSB) or plywood, is typically done by hand. This is a labor-intensive process, particularly for the lowest row of sheathing. Typically, at least one worker holds a piece of sheathing in place and while at least one other worker nails or otherwise attaches the piece of sheathing to the frame of the building. Ideally, the sheathing should extend down past the top of the concrete foundation of the building. However, the concrete prevents a worker from quickly tapping in a few nails on which to rest the sheathing, so typically at least two workers maneuver the piece of sheathing into place and then attached it to the frame of the building. After the lowest row of sheathing is installed, pieces of sheathing in additional rows above can be set on pieces of sheathing in the rows below while being secured to the frame of the building. Most of the time, this step can be performed by a single worker.
Also, the traditional way installing sheathing leaves the bottom edge of the sheathing exposed to the elements. Building standards and codes tell workers to observe a ground clearance minimum (typically 6 inches) for keeping the sheathing above grade. This is required for several reasons, but most importantly it is required so that the bottom edge of the sheathing does not contact standing water on the ground or have water splashed up on it when people, animals or vehicles run through standing water under the sheathing. Unfortunately, this does not prevent all splashed water from contacting the sheathing. Also, even if the ground clearance minimum is observed during construction, later events—such as actions by the building owner or erosion deposits can raise the level of the grade, reducing the separation between grade and the sheathing.
What is needed is a way to hold pieces of lowest row of sheathing in position while it is secured to the building frame while also protecting the sheathing from water damage.
The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate one or more embodiments of the inventive subject matter and, together with the detailed description, serve to explain the principles and implementations thereof. Like reference numbers and characters are used to designate identical, corresponding, or similar components in different figures. The figures associated with this disclosure typically are not drawn with dimensional accuracy to scale, i.e., such drawings have been drafted with a focus on clarity of viewing and understanding rather than dimensional accuracy.
In describing the one or more representative embodiments of the inventive subject matter, use of directional terms such as “upper,” “lower,” “above,” “below”, “in front of,” “behind,” etc., unless otherwise stated, are intended to describe the positions and/or orientations of various components relative to one another as shown in the various Figures and are not intended to impose limitations on any position and/or orientation of any component relative to any reference point external to the Figures.
In the interest of clarity, not all of the routine features of representative embodiments of the inventive subject matter described herein are shown and described. It will, of course, be appreciated that in the development of any such actual implementation, numerous implementation-specific decisions must be made in order to achieve specific goals, such as compliance with application and business-related constraints, and that these specific goals will vary from one implementation to another and from one developer to another. Those skilled in the art will recognize that numerous modifications and changes may be made to the representative embodiment(s) without departing from the scope of the claims. It will, of course, be understood that modifications of the representative embodiments will be apparent to those skilled in the art, some being apparent only after study, others being matters of routine mechanical, chemical and electronic design. No single feature, function or property of the representative embodiments is essential. In addition to the embodiments described, other embodiments of the inventive subject matter are possible, their specific designs depending upon the particular application. Any embodiment described as “comprising” includes the case of “consisting only of.” The scope of the inventive subject matter should not be limited by the particular embodiments herein described but should be defined only by the appended claims and equivalents thereof.
The first representative embodiment inventive sheath-protecting bracket 100 has a plurality of block spacers 110 that are coupled on a top face of the bottom plate 104, each typically ¼-⅜ inch high. The block spacers 110 are separated by a plurality of block spacer gaps 112. Sheathing 202 inserted between the back plate 102 and front plate 106 rest on the block spacers 110. The block spacers 110 hold the sheathing 202 off the bottom plate 104 so that if small amounts of moisture accumulate on top of the bottom plate 104, the sheathing 202 will not contact it and will not wick up the moisture into the sheathing 202, which can ruin it. Also, water may enter the sheathing 202 during or after installation and will weep out of the bottom of the sheathing 202 if there is open space below it. In the first representative embodiment, the block spacers 110 are coupled to the back plate 102 and leave a lateral gap 114 above the bottom plate 104 between the block spacers 110 and the front plate 106 with the lateral gap 114 running the length of the bracket. Coupling the block spacers 110 to both the back plate 102 and the bottom plate 104 strengthens the entire sheath-protecting bracket 100. In alternative embodiments, the block spacers 110 are coupled to the front plate 106 with a lateral gap between the block spacers 110 and the back plate 102, though this arrangement is less strong. In yet other embodiments, the block spacers 110 do not contact either the back plate 102 or the front plate 106 and there is a front lateral gap between the block spacers 110 and the front plate 106 as well as a back lateral gap between the block spacers 110 and the back plate 102. In still other embodiments, the block spacers 110 are coupled to both back plate 102 and the front plate 106 with no lateral gap present.
The bottom plate 104 has a plurality of drain holes 118 that penetrate through the bottom plate 104, typically 3-8 mm in diameter. These drain holes 118 allow moisture that has collected in the block spacer gaps 112 and lateral gap 114 to drain out. This prevents water from accumulating beneath the sheathing 202 in the sheath-protecting bracket 100 so that the sheathing 202 does not contact standing water. In the first representative embodiment, there are drain holes 118 in some, but not all of the block spacer gaps 112. Water that accumulates in block spacer gaps 112 that do not have drain holes 118 will flow through the lateral gap 114 to the block spacer gaps 112 that have drain holes 118. In other embodiments, there are drain holes 118 in the lateral gap 114. In yet other embodiments, there are drain holes 118 in all the block spacer gaps 112. Embodiments without lateral gaps 114 will have drain holes 118 in all block spacer gaps 112.
The back plate 102 of the first representative embodiment sheath-protecting bracket 100 has two fastener holes 122, one in an upper left corner of the back plate 102 and one in the upper right corner of the back plate 102. The fastener holes 122 allow a worker to quickly fasten the first representative embodiment sheath-protecting bracket 100 to a wall 220, passing the fasteners 208 through the fastener holes 122. The two fastener holes 122 in these locations is optimal for quick securing of the first representative embodiment sheath-protecting bracket 100 to a wall 220, but other embodiments may have more or less fastener holes 122 and/or fastener holes 122 in different locations on the back plate 102.
The front plate 106 has a kicker strip 108 on a front of the front plate 106. The kicker strip 108 adds thickness to the front plate 106 so that it's bottom edge is the thickness of standard horizontal siding planks 224, typically 5/16 inch. The kicker strip 108 has a front face that from bottom to top angles slightly back towards the back plate 102. The angle of the kicker strip 108 is approximately the standard angle (typically 6° back from vertical) made by pieces of standard size horizontal siding planks 224 when they are installed with a bottom portion of one piece overlapping a top portion of a piece installed immediately below. The thickness and angle of the kicker strip 108 causes the first (bottom) row of horizontal siding planks 224 to align at the correct angle without the need for separate starter shims. Starter shims are typically made by ripping strip one or more pieces of siding planks, so not needing starter shims saves time and materials. The sheath-protecting bracket 100 can be made with a kicker strip 108 having a customized angle for use with non-standard sized siding planks. In the first representative embodiment, the kicker strip 108 is an integral part of the front plate 106. In other embodiments, the kicker strip 108 is a separate part of the front plate 106 that is made separately and then attached to the main part of the front plate 106, either at the manufacturer's facility or at the installation site. Different sized kicker strips 108 may be provided with the sheath-protecting bracket 100 to work with different sizes and styles of siding. The sheath-protecting bracket 100 may also be made without the kicker strip 108 for use when installing on a building not using lap siding.
The front plate 106 of the first representative embodiment of the sheath-protecting bracket 100 has a double-side tape 120 coupled to a front face of front plate 106, typically on the kicker strip 108. The double-side tape 120 adheres to the front plate 106 and to a vapor barrier 226 that is typically attached to the building prior to installation of the siding. This seal helps weatherized the building by blocking air and water from entering up and behind vapor barrier 226. The angle match between the kicker strip 108 and the installed horizontal siding planks 224 keeps large portions of their surfaces in contact with the double-side tape 120 and vapor barrier 226 pressed between.
The first representative embodiment sheath-protecting bracket 100 is made of Polyvinyl chloride (PVC), but in other embodiments may be made of other suitable materials. The first representative embodiment sheath-protecting bracket 100 is made with an injection molding process, but may be made by other suitable processes, such as three-dimensional printing.
The wall 220 of the first representative embodiment building exterior sheathing system 200 comprises a frame wall 222 and a foundation wall 204. The frame wall 222 comprises wall studs 206, bottom plates 210, floor boards 212, and sill plates 214. The wall studs 206 run vertically and are coupled to bottom plates 210 running horizontally below. The bottom plates 210 are coupled to the floor boards 212 below, which in turn are coupled to the sill plates 214 further down. The frame wall 222 is coupled to the foundation wall 204 at the sill plates 214. In the first representative embodiment, the wall studs 206, bottom plates 210, and the sill plates 214 are wood beams, but in other embodiments may be of metal or other suitable material. The floor boards 212 are typically a subflooring layer of plywood or OSB. The foundation wall 204 is typically concrete. Typically, the wall studs 206 are nailed to the bottom plates 210, the bottom plates 210 nailed to the sill plates 214 though the floor boards 212. The bottom plates 210, floor boards 212, and sill plates 214 are typically bolted to the foundation wall 204.
In some alternative embodiments of the building exterior sheathing system 200, the frame wall 222 is a cripple wall with the bottom plates 210 and floor boards 212 omitted and the wall studs 206 coupled directly to the sill plates 214. In these embodiments, the first representative embodiment sheath-protecting bracket 100 is coupled to the wall 220 with one or more fasteners 208 at the sill plates 214.
In some alternative embodiments of the building exterior sheathing system 200, the frame wall 222 is concrete wall with furring strips. In these embodiments, the first representative embodiment sheath-protecting bracket 100 is coupled to the wall 220 with one or more fasteners 208 to the furring strips.
The third representative embodiment sheath-protecting bracket 400 has a front plate 406 with a back wall that slopes downward and forward, matching the slope of the front wall of the front plate 406, giving the front plate 406 a uniform thickness. This uses less material than the front plate 106 of the second representative embodiment sheath-protecting bracket 300.
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Cor-A-Vent, Inc., “Sturdi-Strips™ Rainscreen Furring Strips A” http://www.cor-a-vent.com/sturdi-strips.cfm, retrieved Jul. 12, 2018, 5 pages. |
Number | Date | Country | |
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62717081 | Aug 2018 | US |