Siding board for clapboard boarding and a clapboard boarding structure
First Claim
1. A siding board for clapboard boarding that is employed in a clapboard boarding structure in which a plurality of siding boards are fastened to a framework of a building such that lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards, wherein the siding board is a ceramic type siding board, the siding board comprising:
- vertical joint grooves on a designed surface thereof, lower edges of a lower side portion formed at different heights with boundaries of the vertical joint grooves, a rear surface stepped portion formed on the lower side portion, which has been obtained by notching a rear surface of the siding board, and an upper end surface of the rear surface stepped portion formed to extend in a substantially straight line in lateral directions.
1 Assignment
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Accused Products
Abstract
Siding boards for clapboard boarding are used in a clapboard boarding structure in which lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards for installing a plurality of siding boards to a framework of a building. The siding boards are ceramic type siding boards with vertical joint grooves being formed on designed surfaces. Lower edges of the lower side portions of the siding boards are formed at different heights with the boundaries of the vertical joint grooves. Rear surface stepped portions that have been obtained by notching the rear surface are formed at the lower side portions. Upper end portions of the rear surface stepped portions are formed in a substantially straight line in lateral directions.
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Citations
7 Claims
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1. A siding board for clapboard boarding that is employed in a clapboard boarding structure in which a plurality of siding boards are fastened to a framework of a building such that lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards,
wherein the siding board is a ceramic type siding board, the siding board comprising: -
vertical joint grooves on a designed surface thereof, lower edges of a lower side portion formed at different heights with boundaries of the vertical joint grooves, a rear surface stepped portion formed on the lower side portion, which has been obtained by notching a rear surface of the siding board, and an upper end surface of the rear surface stepped portion formed to extend in a substantially straight line in lateral directions. - View Dependent Claims (2)
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3. A method for manufacturing a siding board for clapboard boarding that is employed in a clapboard boarding structure in which a plurality of siding boards are installed to a framework of a building such that lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards, the method comprising the steps of:
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embossing a green sheet to make an embossed board prior to curing of cement for forming joint concave portions at portions that are to be vertical joint grooves of the siding boards and for forming lower concave portions below portions that are to be lower edges of the siding boards, in which the lower concave portions have different vertical widths with the boundaries of the joint concave portions;
curing the cement of the embossed board; and
grinding down lower side portions of the embossed board horizontally across the embossed boards from a rear surface side thereof up to a bottom surface of the lower concave portions to form rear surface stepped portions and to form lower side portions of the siding board having lower edges at different heights with boundaries of the vertical joint grooves. - View Dependent Claims (4, 5)
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6. A clapboard boarding structure in which a plurality of siding boards are installed to a framework of a building such that lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards,
wherein the siding boards are ceramic type siding boards, each of the siding boards comprising: -
vertical joint grooves on a designed surface, lower edges of a lower side portion formed at different heights with boundaries of the vertical joint grooves, a rear surface stepped portion formed on the lower side portion, which have been obtained by notching the rear surface of the siding boards, and an upper end surface of the rear surface stepped portion formed to extend in a substantially straight line in a lateral direction; and
wherein each of the upper side portions of lower siding boards is disposed at the rear surface stepped portion formed on each of the lower side portions of upper siding boards. - View Dependent Claims (7)
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Specification