Siding boards attachment structure

Abstract

This invention provides a siding boards attachment structure excellent in external appearance, weather resistance and construction efficiency in which a plurality of siding boards or external wall members are secured to a structural body of a building with securing members in a rabbet joint manner. The securing member is secured to the structural body in a state in which an upper side lower-ledge formed at an upper edge of the external wall member to be disposed at an internal side is engaged with a lower side upper-ledge formed at a lower edge of the external wall member to be disposed at an external side. A cut end portion is secured to the structural body with an end portion securing member.

1 . A siding boards attachment structure in which a plurality of external wall members are secured to a structural body of a building with securing members in a rabbet joint manner, comprising: 
 the securing member being secured to the structural body in a state in which an upper side lower-ledge formed at an upper edge of the external wall member to be disposed at an internal side is engaged with a lower side upper-ledge formed at a lower edge of the external wall member to be disposed at an external side,    a size adjusting external wall member having a cut end portion for adjusting its width among the plurality of external wall members with the cut end portion being secured to the structural body with an end portion securing member,    the end portion securing member being provided with a backboard portion to be secured to the structural body and a forwardly bent portion forwardly bent from one edge of the backboard portion, and    the backboard portion of the end portion securing member being in contact with a rear side surface of the size adjusting external wall member and the forwardly bent portion of the end portion securing member is in contact with the cut end face of the size adjusting external wall member,    wherein the backboard portion and the rear side surface of the size adjusting external wall member are bonded to each other with an adhesive agent.    
   
   
       2 . The siding boards attachment structure as recited in  claim 1 , wherein the cut end portion of the size adjusting external wall member is inclined with respect to a right and left width direction of the size adjusting external wall member, and wherein the end portion securing member is disposed along the cut end portion in an inclined state with respect to the right and left width direction of the size adjusting external wall member.  
   
   
       3 . The siding boards attachment structure as recited in  claim 2 , wherein the size adjusting external wall member is disposed at a flowing side assortment portion connecting with a lower roof of a building, and wherein the cut end portion of the size adjusting external wall member is secured to the structural body with the end portion securing member.  
   
   
       4 . The siding boards attachment structure as recited in  claim 1 , wherein the size adjusting external wall member is disposed at a building side assortment portion connecting with a lower roof of the building, an upper or lower side of an opening portion, or an overhang portion, and wherein the cut end portion of the size adjusting external wall member is secured to the structural body with the end portion securing member.  
   
   
       5 . The siding boards attachment structure as recited in  claim 1 , wherein the securing member and the end portion securing member are secured to a furring strip fixed to the structural body.  
   
   
       6 . The siding boards attachment structure as recited in  claim 1 , wherein the securing member has a base plate portion which comes into contact with the rear side surface of the external wall member, and wherein the backboard portion of the end portion securing member and the base plate portion of the securing member have approximately the same front-to-rear width.  
   
   
       7 . The siding boards attachment structure as recited in  claim 1 , wherein the external wall member is a ceramic series external wall member made of fired material.