Ceiling repair method and wall repair method

Abstract

The present invention provides a method of repairing a plaster ceiling. The plaster ceiling to be repaired by the above described method includes: plates bridged across joists and spaced apart from each other; a ceiling base material finished with a masonry trowel over the lower surfaces of the plates; and a ceiling finishing material formed over the lower surface of the ceiling base material. The above described method includes the steps of: drilling an injection hole extending from the upper surface of the plate to the interface between the plate and the ceiling base material; injecting an acrylic resin composition containing: at least one monomer selected from an acrylic monomer or an methacrylic monomer; a thermosetting resin; and a curing agent; through the injection hole into the interface between the plate and the ceiling base material; and curing the acrylic resin composition so that the plate and the ceiling base material are adhered to each other. The invention also provides the use of the above described method.

1 - 3 . (canceled) 
     
     
         4 . A method of repairing a plaster ceiling having plates bridged across joists and spaced apart from each other, a wire mesh provided so as to extend across the plates, and a ceiling finishing material formed over a lower surface of the wire mesh, the method comprising:
 applying an acrylic resin composition containing at least one monomer selected from the group consisting of an acrylic monomer and a methacrylic monomer, a thermosetting resin, and a curing agent, to the wire mesh from an upper side to introduce the acrylic resin composition into an interface between the wire mesh and the ceiling finishing material; and   adhering the wire mesh and the ceiling finishing material by curing the acrylic resin composition.   
     
     
         5 . The method of repairing a plaster ceiling according to  claim 4 , further comprising providing a new wire mesh so as to extend across upper surfaces of the plates,
 wherein adhering the wire mesh and the ceiling finishing material includes adhering the new wire mesh, the wire mesh provided so as to extend across the plates and the ceiling finishing material by curing the acrylic resin composition.   
     
     
         6 . A method of repairing a plaster wall, the method comprising:
 drilling an injection hole at a site of the plaster wall to be repaired, which has: a base material; an intermediate coating material applied with a masonry trowel on the base material; and a surface material applied with a masonry trowel on the intermediate coating material, wherein the injection hole is extended from the base material through the intermediate coating material to an interface between the intermediate coating material and the surface material;   injecting an acrylic resin composition containing at least one monomer selected from the group consisting of an acrylic monomer and a methacrylic monomer, a thermosetting resin, and a curing agent, into the interface between the intermediate coating material and the surface material; and   adhering the interface between the intermediate coating material and the surface material by curing the acrylic resin composition.   
     
     
         7 . A method of repairing a plaster ceiling having plates bridged across joists and spaced apart from each other, a ceiling base material applied to a surface formed from the plates with a masonry trowel from a bottom side, and a ceiling finishing material formed over a lower surface of the ceiling base material, the method comprising:
 the following (i), (ii) or (iii),   (i) drilling an injection hole extending from an upper surface of one of the plates to an interface between the one of the plate and the ceiling base material,   (ii) drilling an injection hole extending from an upper surface of one of the plates to an interface between the ceiling base material and the ceiling finishing material,   (iii) the ceiling base material has a penetrating portion extending from a lower surface of one of the plates through a gap between a plurality of the plates up to an upper surface of the one of the plates, and a ceiling finishing material formed over a lower surface of the ceiling base material; and   the following (iv), (v) or (vi),   (iv) injecting an acrylic resin composition containing at least one monomer selected from the group consisting of an acrylic monomer and a methacrylic monomer, a thermosetting resin, and a curing agent, through the injection hole into the interface between the one of the plates and the ceiling base material,   (v) injecting an acrylic resin composition containing at least one monomer selected from the group consisting of an acrylic monomer and a methacrylic monomer, a thermosetting resin, and a curing agent, through the injection hole into the interface between the ceiling base material and the ceiling finishing material,   (vi) injecting an acrylic resin composition containing at least one monomer selected from the group consisting of an acrylic monomer and a methacrylic monomer, a thermosetting resin, and a curing agent, into an interface between the one of the plates and the ceiling base material, through a gap between a side face of the one of the plates and the ceiling base material that is stuffed in the gap between a plurality of the plates up to an upper surface of the plate; and   the following (vii) or (viii),   (vii) adhering the one of the plates and the ceiling base material by curing the acrylic resin composition,   (viii) adhering the ceiling base material and the ceiling finishing material by curing the acrylic resin composition.   
     
     
         8 . The method of repairing a plaster ceiling according to  claim 7 , wherein the method comprises (i), (iv) and (vii). 
     
     
         9 . The method of repairing a plaster ceiling according to  claim 7 , wherein the method comprises (ii), (v) and (viii). 
     
     
         10 . The method of repairing a plaster ceiling according to  claim 7 , wherein the method comprises (iii), (vi) and (vii).