Nickel-gap flat siding product with locking joint

Abstract

A unique modified shiplap joint with matching or corresponding reverse curves on opposing edges or ends of a piece of siding, each forming one-half of the joint: an underlap edge, and an overlap edge. The respective curves engage and resist or prevent separation of the edges, particularly under a pre-determined wind load. A fastener channel in the underlap section allows for a nail or fastener to be used, while the nail head is then covered by the adjacent overlap section. The respective edges form an angled gap, which is configured to prevent water or rain from entering.

What is claimed is: 
     
         1 . A siding system, comprising:
 a pair of siding pieces, each piece comprising a length, a width, an exterior face, an interior face, a first edge with a first recess cut with a first recess face parallel to and open to the interior face, and a second edge with a second recess cut with a second recess face parallel to and open to the exterior face, wherein the first edge of one panel is configured to meet with and form a shiplap joint with the second edge of the other panel;   the first edge further comprising an overlap reverse curve face extending from an interior corner of the first recess cut to the interior face, and an overlap front face extending from an exterior corner of the first recess cut to the exterior face;   the second edge further comprising an underlap reverse curve face extending from an exterior corner of the second recess cut to the interior face, and an underlap back face extending from an interior corner of the second recess cut to the exterior face;   wherein the overlap reverse curve is configured to engage with the underlap reverse curve in whole or in part when the shiplap joint is formed.   
     
     
         2 . The siding system of  claim 1 , where the engagement of the overlap reverse curve and the underlap reverse curve prevents the first and second edges of the respective panels forming the shiplap joint from separating. 
     
     
         3 . The siding system of  claim 1 , where the engagement of the overlap reverse curve and the underlap reverse curve is configured to resist separation of the first and second edges of the respective panels forming the shiplap joint when subjected to a wind load. 
     
     
         4 . The siding system of  claim 1 , where the engagement of the overlap reverse curve and the underlap reverse curve is configured to prevent separation of the first and second edges of the respective panels forming the shiplap joint when subjected to a pre-determined wind load. 
     
     
         5 . The siding system of  claim 1 , wherein the overlap reverse curve comprises a first overlap curve and a second overlap curve, wherein the first overlap curve is adjacent the respective interior face; and
 wherein the underlap reverse curve comprises a first underlap curve and a second underlap curve, wherein the first underlap curve is adjacent the respective interior face.   
     
     
         6 . The siding system of  claim 1 , wherein the first overlap curve has a first overlap radius of curvature, the second overlap curve has a second overlap radius of curvature, the first underlap curve has a first underlap radius of curvature, and the second underlap curve has a second underlap radius of curvature. 
     
     
         7 . The siding system of  claim 6 , wherein at least one of the radii of curvature is different from one or more of the others. 
     
     
         8 . The siding system of  claim 1 , wherein the second recess face comprises a first longitudinal channel or groove extending some or all of the length of the respective piece of siding. 
     
     
         9 . The siding system of  claim 8 , wherein the first recess face comprises a second longitudinal channel or groove extending some or all of the length of the respective piece of siding, wherein the second longitudinal channel or groove matches some or all of the first longitudinal channel or groove when the joint is formed. 
     
     
         10 . The siding system of  claim 8 , wherein the first longitudinal channel or groove is configured to receive a penetrating fastener with a head with a thickness, and the channel or groove has a depth greater than the thickness of the head of the fastener. 
     
     
         11 . The siding system of  claim 8 , wherein the first longitudinal channel or groove has a bottom and a depth sufficient to receive a penetrating fastener with a head such that, when the fastener is fully inserted so that a bottom of the fastener head is flush with the bottom of the channel or groove, the fastener head does not extend above the plane of the second recess face. 
     
     
         12 . The siding system of  claim 1 , wherein the overlap front face and the underlap back face form two sides of a gap when the shiplap joint is formed. 
     
     
         13 . The siding system of  claim 12 , where the gap is angled away from the respective recess faces. 
     
     
         14 . The siding system of  claim 1 , wherein the overlap front face is curved in whole or in part. 
     
     
         15 . The siding system of  claim 14 , wherein the overlap front face is curved concavely in whole or in part. 
     
     
         16 . The siding system of  claim 1 , wherein the overlap front face has two straight sections, a first section at a first angle and a second section at a second angle.