JP2015052239A - Outer covering reinforcement method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outer covering reinforcement method capable of inexpensively reinforcing a building outer covering in a short construction period.SOLUTION: The outer covering reinforcement method is provided for reinforcing a galvanized sheet roof 1 by forming a waterproof resin layer 12 on a surface of a galvanized sheet 4 in the galvanized sheet roof 1 (the building outer covering) constituted by arranging the galvanized sheet 4 (an outer covering material) on the surface. The galvanized sheet roof 1 is reinforced by executing first processing for forming a foam adhesive layer 11 for adhering the waterproof resin layer 12 to the surface of the galvanized sheet 4 by spraying and foaming a foamable resin material on the surface of the galvanized sheet 4 and second processing for forming the waterproof resin layer 12 by spraying a non-foamable resin material on the surface of the foam adhesive layer 11 in this order.

Description

  The present invention relates to an exterior reinforcement method for reinforcing an exterior of a building such as a roof or a wall surface.

  Today, there are building exteriors (roofs, wall surfaces, etc.) composed of various exterior materials according to the environment of the installation site and construction costs. In this case, any exterior of the building using the exterior material may be subject to vibrations applied to the building, aged deterioration due to exposure to sunlight and rainwater, and may cause rain leakage. . For this reason, various exterior repairing methods for preventing rain leakage due to aging deterioration of the exterior of a building have been proposed.

  For example, Patent Document 1 below discloses a repair method for repairing a tile rod roof (tin roof) using a waterproof repair material for tile rod roof (hereinafter also simply referred to as “repair material”). In this case, the repair material used in this repair method is made by bonding a surface material composed of a copper plate, an aluminum plate, a vinyl chloride sheet, etc., and a waterproof layer composed of a plate-like non-vulcanized rubber to each other. In addition to being integrated, an adhesive surface is formed on the surface of the waterproof layer, and release paper is disposed so as to cover the adhesive surface. In addition, in this repair material, a filling member having a rectangular cross section made of a foam of plastic or rubber is adhesively fixed to the adhesive surface, and the adhesive surface is also formed on the filling member so that a release paper is arranged. It is installed.

  When repairing a tile rod roof using this repair material, first, the release paper covering the adhesive surface formed on the filling member is peeled to expose the adhesive surface, and the tile rod ( The filling member is fitted into the groove portion of the groove plate bending portion, a portion including a hanging member, a cap, and the like, and the filling member is adhesively fixed to the bottom surface of the groove portion. Next, the release paper covering the adhesive surface formed on the waterproof layer is peeled to expose the adhesive surface, and the waterproof layer and the surface material are folded and adhesively fixed to the side surface of the roof tile (goat folding joint). Subsequently, caulking is carried out with a caulking material such as polyurethane resin along the bent raised portion (lower end portion of the repair material) of the grooved rod roof. As a result, the tile rod of the tile rod roof is covered with the repair material and the caulking material, and the gaps generated in the cross-folded joint portion of the tile rod, the cracks generated in the bent raised portion of the groove plate, etc. are blocked. This completes the repair of the tile rod roof.

  On the other hand, Patent Document 2 below discloses a method of reinforcing a concrete roof surface by forming a waterproof layer or the like. Specifically, in this reinforcing method, first, a primer for adhering the material forming the waterproof layer is applied to the surface of the concrete roof. Next, a waterproof layer is formed by applying and drying a urethane resin composite (hereinafter also referred to as “resin paint”). Thereby, the concrete roof is covered with the waterproof layer, and the concrete roof is reinforced. Subsequently, a protective agent is applied to the surface of the waterproof layer to form a top coat (protective film). Thereby, the situation where said waterproof layer deteriorates in a short time is avoided. Thus, the concrete roof reinforcement work is completed.

Japanese Utility Model Publication No. 5-87117 (page 3-7, Fig. 1-3) JP 2012-12490 A (page 6-37, FIG. 1)

  However, the conventional method for repairing roof tile roofs and the method for reinforcing concrete roofs have the following problems to be solved and problems to be improved. That is, in the conventional method for repairing a tile rod roof, the repair material is adhesively fixed so as to cover the tile rod and caulking is applied to repair and reinforce gaps and cracks generated in the tile rod roof. The method is adopted. In this case, there are various types of roof tile roofs that differ in the size of the tile rod (width and depth of the groove). Therefore, in the conventional method for repairing the tile rod roof, it is necessary to produce various repair materials having different cross-sectional shapes and sizes of the filling member according to the size of the tile rod to be repaired (reinforcement target). It is difficult to reduce the production cost of repair materials. For this reason, it is difficult to reduce the cost required for repairing (reinforcing) tiled rod roofs due to the use of expensive repair materials in the conventional repair method (reinforcing method) of tiled rod roofs. There is a problem that it has become.

  In addition, in the conventional method of repairing the tile rod roof, although it is possible to repair and reinforce the gaps generated in the tile rod of the tile rod roof and the cracks generated in the bent raised portion of the groove plate, It is not possible to repair rust holes or the like generated on the flat plate surface of the groove plate. Therefore, when a rust hole or the like is generated on the flat plate surface of the groove plate, it is necessary to close the hole with an existing tin roof repair tape or the like and then perform an operation such as painting the entire roof tile roof. For this reason, in the conventional method of repairing tile rod roofs, repairing of tile rods using repair materials (reinforcement) occurs when rust holes or the like are generated not only in the vicinity of the tile rod but also in the flat plate surface of the groove plate. ) It is necessary to close the hole and paint the work separately from the work, and the cost required for repairing (strengthening) the roof tile roof is further increased, and it is difficult to shorten the work period required for repairing (reinforcing). There is also a problem that.

  On the other hand, in the conventional method for reinforcing a concrete roof, the concrete roof can be reinforced without preparing repair materials of various sizes in advance, unlike the above-described repair method for roof tile roofs. In this method of reinforcing a concrete roof, as described above, a primer is applied to the surface of the concrete roof prior to applying the resin paint to form the waterproof layer. As a result, unlike conventional reinforcement methods for concrete roofs, resin coatings are applied directly to the surface of concrete roofs without applying a primer to form a waterproof layer. Therefore, it is possible to avoid a situation where the waterproof layer is peeled off from the concrete roof.

  In this case, in the above-described concrete roof (slate roof) and building exterior such as a slate outer wall, a plurality of slate materials are arranged side by side and are fixed to the aggregate by fasteners. Therefore, in this type of building exterior, a very small gap is generated between the slate materials, and this gap may be expanded to about 1 to 2 mm with the aging of the building. Further, in this type of building exterior, for example, a flying object may come into contact with the slate material to cause a crack. However, the primer thin film initially formed in the conventional reinforcing method and the top coat formed on the surface of the waterproof layer have a thickness of about several μm to several hundred μm, so the above-mentioned gaps and The crack cannot be closed.

  On the other hand, the waterproof layer can be formed thicker than the size of the gaps and cracks by sufficiently increasing the amount of the resin coating applied per unit area. However, since the resin paint has a certain degree of fluidity, gaps and cracks are closed at the moment of spraying it on the building exterior, but the resin paint flows before drying is completed. The gaps and cracks may be exposed again. In this case, the fluidity of the resin coating can be lowered by adding various additives to the resin coating, but not only the workability of the coating process is deteriorated but also the finish (appearance) is also deteriorated. Become.

  In addition, when a large amount of resin paint is sprayed at once, not only dripping (flow of resin paint) occurs, but also the resin paint on the surface side in the coating film is dried in advance, so that the back side in the coating film The drying of the resin coating on the base side (in this example, the thin film side of the primer) is hindered, and the time required for drying and curing of the entire waterproof layer becomes very long. Therefore, when a thick waterproof layer is formed to close gaps or cracks, the resin coating is applied in multiple steps (so-called “twice blowing” or “three times blowing”). Therefore, the cost required for reinforcing the exterior of the building will increase.

  As described above, in the conventional method for reinforcing a concrete roof, it is difficult to close the gaps and cracks without increasing the construction period and increasing the cost, and the work of applying the primer is started. Prior to this, it is necessary to carry out an operation of closing the gaps or cracks by filling them with a filler or attaching a repair tape. For this reason, it is preferable to improve this point.

  The present invention has been made in view of such problems and problems to be solved, and a main object of the present invention is to provide an exterior reinforcement method capable of reinforcing a building exterior at a low cost and in a short construction period.

  In order to achieve the above object, the exterior reinforcing method according to claim 1, wherein a waterproof resin layer is formed on a surface of the exterior material in the exterior of the building configured to have the exterior material disposed on the surface, and the exterior of the building is formed. A reinforcing method for reinforcing exterior, wherein a foamed adhesive layer for adhering the waterproof resin layer to the surface of the exterior material is formed by spraying a foamable resin material on the surface of the exterior material to cause foaming. And the said exterior of a building is reinforced by performing the 2nd process which sprays a non-foamable resin material on the surface of the said foaming adhesion layer, and forms the said waterproof resin layer in this order.

  The exterior reinforcing method according to claim 2 is the exterior reinforcing method according to claim 1, wherein the foamed adhesive layer having a thickness of 3 mm or more and less than 5 mm is formed in the first treatment.

  Furthermore, the exterior reinforcement method according to claim 3 executes a third process of forming a surface protective layer by applying a protective agent to the surface of the waterproof resin layer.

  According to the exterior reinforcement method of Claim 1, the foaming adhesive layer for adhere | attaching a waterproof resin layer on the surface of an exterior material by spraying a foamable resin material on the surface of the exterior material which comprises a building exterior, and making it foam The first treatment for forming the resin and the second treatment for forming the waterproof resin layer by spraying a non-foamable resin material on the surface of the foam adhesive layer in this order to reinforce the building exterior, thereby repairing the repair material It is possible to repair and reinforce the roof of various shapes without preparing the material etc. in advance, and to apply the foamed adhesive layer and the waterproof resin layer over the entire area including the point requiring reinforcement in the roof to be reinforced. By forming in order, it is possible to reinforce all the points requiring reinforcement at once. In addition, because gaps and cracks are closed by the foam adhesive layer that is first formed on the exterior material, repair work that closes the gaps and cracks before the start of the reinforcement work becomes unnecessary. The cost required for reinforcement of the building can be sufficiently reduced, and the exterior of the building can be reinforced with a very short construction period. Moreover, since the waterproof resin layer can be sufficiently strongly bonded to the exterior material by the foamed adhesive layer, it is possible to avoid a situation where the waterproof resin layer and the like are peeled off from the exterior of the building after construction. Furthermore, since it is not necessary to form the waterproof resin layer excessively thick for the purpose of clogging such as gaps and cracks, by increasing the thickness of the waterproof resin layer to a necessary and sufficient thickness, an increase in material cost can be avoided. In addition, since the waterproof resin layer can be suitably dried and cured, the exterior (finish) of the building exterior after the reinforcement work can be made sufficiently beautiful.

  According to the exterior reinforcement method of claim 2, by forming a foamed adhesive layer having a thickness of 3 mm or more and less than 5 mm in the first treatment, the thickness of the foamed adhesive layer is too thin so that gaps or cracks are blocked. Adequate building exterior without incurring an increase in the burden on the exterior of the building due to an increase in the weight of the foamed adhesive layer or an increase in material costs due to insufficient thickness of the foamed adhesive layer Can be reinforced.

  Furthermore, according to the exterior reinforcement method of claim 3, by performing the third treatment for forming the surface protective layer by applying a protective agent to the surface of the waterproof resin layer, hydrolysis of the waterproof resin layer, ultraviolet rays, etc. It is possible to delay the progress of deterioration due to the above, and to sufficiently extend the aspect life of the foamed adhesive layer or the waterproof resin layer that reinforces the building exterior.

1 is a perspective view of a tin roof 1 reinforced by a foam adhesive layer 11, a waterproof resin layer 12, and a surface protective layer 13. FIG. It is sectional drawing of the tin roof 1 of the state reinforced with the foaming adhesive layer 11, the waterproof resin layer 12, and the surface protection layer 13. FIG. It is sectional drawing of the tin roof 1 before starting a reinforcement work. It is sectional drawing of the state which formed the foaming adhesive layer 11 on the surface of the tin roof 1. FIG. It is sectional drawing of the state which formed the waterproof resin layer 12 on the surface of the foaming adhesive layer 11 on the tin roof 1. FIG. 2 is a perspective view of a slate roof 21 in a state reinforced by a foam adhesive layer 11, a waterproof resin layer 12, and a surface protective layer 13. FIG. 2 is a cross-sectional view of a slate roof 21 reinforced by a foam adhesive layer 11, a waterproof resin layer 12, and a surface protective layer 13. FIG. It is sectional drawing of the slate roof 21 before starting reinforcement work. 2 is a cross-sectional view of a state in which a foam adhesive layer 11 is formed on the surface of a slate roof 21. FIG. 3 is a cross-sectional view of a state in which a waterproof resin layer 12 is formed on the surface of a foamed adhesive layer 11 on a slate roof 21. FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an exterior reinforcement method according to the present invention will be described with reference to the accompanying drawings.

  First, an example of the “exterior reinforcement method” will be described by taking a repair method of the tin roof 1 as an example of “building exterior” as an example.

  The tin roof 1 shown in FIGS. 1 and 2 is an example of a “building exterior” in a state of being reinforced in accordance with an “exterior reinforcement method” described later. The tin roof 4 is sandwiched by a waterproof sheet 3 on a field board 2. The tin 4 is fixed to the base plate 2 (and rafters provided below the base plate 2: not shown) by fasteners (not shown). In the reinforced tin roof 1, the foam adhesive layer 11, the waterproof resin layer 12, and the surface protective layer 13 are formed on the tin 4 in this order. In FIG. 2 and FIGS. 4 and 5 to be referred to later, in order to facilitate understanding of the “exterior reinforcement method”, the thickness of each of the layers 11 to 13 is shown to be larger than the actual thickness.

  In this case, there are various types of “tin roofs”, but in this example, as shown in FIG. 3, as an example, the groove plate 4 a, the hanger 4 b and the cap material 4 c (“exterior material” An example of reinforcing a tin roof 1 (an example of a “tile bar-roof roof”) in which a tile bar is formed by being bent and integrated is described. Moreover, as shown in the figure, in the tin roof 1 before carrying out the reinforcing work, a gap S is formed on the side surface of the tile rod (the goby fold joint portion in which the groove plate 4a, the hanging element 4b and the cap material 4c are bent). May occur, or a crack X may occur in the bent raised portion of the groove plate 4a. Moreover, although illustration is abbreviate | omitted, it may be in the state which the rust hole produced in the flat plate surface of the groove plate 4a. Therefore, in this example, by reinforcing the tin roof 1 according to the method described below, the gap 4, the crack X and the rust hole are closed, and the tin 4 is prevented from being rusted and its strength is improved. Let 2 to 5, in order to facilitate understanding of the “exterior reinforcement method”, the gap S and the crack X are exaggerated and greatly illustrated.

  When reinforcing the tin roof 1, first, the surface of the tin roof 1 (tin 4) is cleaned using a high-pressure cleaning device or the like as necessary. Next, by mixing the main agent (for example, urethane prepolymer) and the curing agent (for example, polyol, polyamine, etc.) on the surface of the tin 4 while mixing, the mixed liquid ( As shown in FIG. 4, the foamed adhesive layer 11 having a thickness of 3 mm or more and less than 5 mm is formed on the surface of the tin 4 (an example of “first treatment”).

  In this case, both the main agent liquid and the curing agent liquid discharged from the nozzle are sufficiently agitated (mixed) by contacting the surface of the tin 4, and after the two liquids adhere to the surface of the tin 4. Foaming starts after 3 seconds and the foamed adhesive layer 11 is formed. That is, foaming starts after the coating liquid (an example of “foamable resin material”) in which both the main agent and the curing agent are mixed sufficiently enters the gap S or the crack X. As a result, the coating liquid that has entered the gap S foams in the gap S to close the entrance of the gap S, and the coating liquid impregnated in the crack X foams in the crack X to close the crack X. . Moreover, when a rust hole exists in the flat plate surface of the groove plate 4a, the rust hole is also closed together with the gap S and the crack X. The foamed adhesive layer 11 preferably has a uniform thickness over the entire area of the tin roof 1, but when the foamed adhesive layer 11 is formed by spraying with a spray gun, a certain amount of unevenness in thickness is obtained. May occur.

  In this case, when the thickness of the foamed adhesive layer 11 is less than 3 mm, it may be difficult to close the gap S, the crack X, and the like. On the other hand, when the thickness of the foamed adhesive layer 11 is 3 mm or more, the gaps S and cracks X can be suitably closed. However, when the thickness of the foamed adhesive layer 11 is 5 mm or more, the formed foam is formed. With the increase in the weight of the adhesive layer 11 itself, an unnecessary burden is applied to the tin roof 1, and materials (main agent and curing agent) required to form the thick foam adhesive layer 11 unnecessarily are wasted. Therefore, it is preferable to form the foam adhesive layer 11 so that the thickness of the thinnest part is 3 mm or more and the thickness of the thickest part is less than 5 mm in the entire area of the tin roof 1.

  Subsequently, after the foamed adhesive layer 11 is sufficiently cured (for example, when 5 minutes or more have elapsed since the application of the coating liquid), the main agent (for example, urethane prepolymer) is formed on the surface of the foamed adhesive layer 11. , And a curing agent (for example, polyol, polyamine, etc.) while spraying on the surface of the foamed adhesive layer 11 and curing the coating film, as shown in FIG. 5, a thickness of about 1 mm to 3 mm (as an example) 2 mm) of waterproof resin layer 12 is formed on the surface of the foamed adhesive layer 11 (an example of “second treatment”). In this example, the coating liquid in which the “main agent” and the “curing agent” are mixed corresponds to the “non-foaming resin material”.

  Thereafter, after the waterproof resin layer 12 is sufficiently dried and cured, a waterproofing agent layer (for example, acrylic urethane paint) is applied and dried, as shown in FIGS. The surface protective layer 13 is formed on the surface (an example of “third treatment”). Thereby, the waterproof resin layer 12 is prevented from being degraded by hydrolysis or ultraviolet rays. As described above, the tin roof 1 is covered with the reinforcing material layer (laminate) composed of the foamed adhesive layer 11, the waterproof resin layer 12, and the surface protective layer 13, and the reinforcing operation of the tin roof 1 is completed.

  Thus, according to this exterior reinforcement method, the foaming adhesion for adhering the waterproof resin layer 12 to the surface of the tin 4 by blowing the foamable resin material to the surface of the tin 4 constituting the tin roof 1 to cause foaming. The “first treatment” for forming the layer 11 and the “second treatment” for forming the waterproof resin layer 12 by spraying the non-foamable resin material on the surface of the foamed adhesive layer 11 are performed in this order. By reinforce the steel roof, it is possible to repair and reinforce the tin roof 1 of various shapes without preparing repair materials or the like in advance. By forming the foamed adhesive layer 11 and the waterproof resin layer 12 in this order, it is possible to reinforce all the reinforcement points required at once. In addition, since the gap S, crack X, and the like are closed by the foamed adhesive layer 11 that is first formed on the tin 4, a repairing operation that closes the gap S, the crack X, etc. prior to the start of the reinforcement work becomes unnecessary. As a result, the cost required to reinforce the tin roof 1 can be sufficiently reduced, and the tin roof 1 can be reinforced in a very short construction period. Moreover, since the waterproof resin layer 12 can be sufficiently strongly bonded to the tin 4 by the foam adhesive layer 11, the situation where the waterproof resin layer 12 and the surface protective layer 13 are peeled off from the tin roof 1 after construction is avoided. be able to. Furthermore, since it is not necessary to form the waterproof resin layer 12 excessively thick for the purpose of closing the gaps S, cracks X, etc., by increasing the thickness of the waterproof resin layer 12 to a necessary and sufficient thickness, the material cost increases. This can be avoided and the waterproof resin layer 12 can be suitably dried and cured, so that the appearance (finish) of the tin roof 1 after the reinforcement work can be made sufficiently beautiful.

  Moreover, according to this exterior reinforcement method, by forming the foamed adhesive layer 11 having a thickness of 3 mm or more and less than 5 mm in the “first treatment”, the thickness of the foamed adhesive layer 11 is too thin, so that the gap S or the crack X is generated. The tin roof does not cause an increase in the burden on the tin roof 1 due to an increase in the weight of the foam adhesive layer 11 or an increase in material cost due to insufficient blockage or an excessive thickness of the foam adhesive layer 11. 1 can be sufficiently reinforced.

  Furthermore, according to this exterior reinforcement method, by performing “third treatment” in which a protective agent is applied to the surface of the foamed adhesive layer 11 to form the surface protective layer 13, hydrolysis of the waterproof resin layer 12 and ultraviolet rays are performed. The progress of deterioration due to the above or the like can be delayed, and the aspect life of the foamed adhesive layer 11 and the waterproof resin layer 12 reinforcing the tin roof 1 can be made sufficiently long.

  Next, another example of the “exterior reinforcement method” will be described by taking the reinforcement method of the slate roof 21 as another example of the “building exterior” as an example. In addition, about the layer formed similarly to each layer formed in the reinforcement method of said tin roof 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  The slate roof 21 shown in FIGS. 6 and 7 is another example of the “building exterior” in a state of being reinforced in accordance with the “exterior reinforcement method” described later. An example) is arranged side by side, and these are fixed to an aggregate (frame: not shown) by a fastener 23. In the slate roof 21 in a reinforced state, the foam adhesive layer 11, the waterproof resin layer 12 and the surface protective layer 13 are formed on the slate members 22 in this order. In FIG. 7 and FIGS. 9 and 10 to be referred to later, in order to facilitate understanding of the “exterior reinforcement method”, the thickness of each layer 11 to 13 is illustrated to be larger than the actual thickness.

  In this case, as shown in FIG. 8, in the slate roof 21 before the reinforcement work is performed, a gap S is generated between the slate materials 22, 22 or a crack X is generated in the slate material 22. There may be. Therefore, the strength of the slate material 22 is improved while the gap S and the crack X are closed by reinforcing the slate roof 21 according to the method described below. 7 to 10, the gap S and the crack X are exaggerated and illustrated in order to facilitate understanding of the “exterior reinforcement method”.

  When reinforcing the slate roof 21, first, the surface of the slate roof 21 (slate material 22) is cleaned using a high-pressure cleaning device or the like as necessary. Next, the mixed liquid (coating film) of the main agent and the curing agent is foamed on the surface of the slate material 22 by spraying on the surface of the slate material 22 while mixing the main agent and the curing agent, and as shown in FIG. A foamed adhesive layer 11 of 3 mm or more and less than 5 mm is formed on the surface of the slate material 22 (another example of “first treatment”).

  At this time, both the main agent liquid and the curing agent liquid discharged from the nozzle are sufficiently agitated (mixed) by contacting the surface of the slate material 22, and both liquids adhere to the surface of the slate material 22. Foaming starts after 2 to 3 seconds and the foamed adhesive layer 11 is formed. That is, foaming starts after the coating liquid (foamable resin material) in a state in which the liquids of the main agent and the curing agent are mixed sufficiently enters the gap S or the crack X. As a result, the coating liquid that has entered the gap S foams in the gap S to close the entrance of the gap S, and the coating liquid impregnated in the crack X foams in the crack X to close the crack X. . Further, as a result of the coating liquid entering and foaming between the fasteners 23 fixing the slate members 22 to the aggregate and the slate member 22, the gap between the fasteners 23 and the slate member 22 is also described above. The gap S and the crack X are closed in the same manner.

  In this case, when the slate roof 21 is reinforced, the thickness of the thinnest part is 3 mm or more and the thickness of the thickest part is less than 5 mm in the entire area of the slate roof 21 in the same manner as the reinforcement of the tin roof 1 described above. It is preferable to form the foamed adhesive layer 11 so as to be. Subsequently, after the foamed adhesive layer 11 has been sufficiently cured, the surface of the foamed adhesive layer 11 is sprayed onto the surface of the foamed adhesive layer 11 while mixing the main agent and the curing agent, and the coating film is cured, whereby FIG. As shown, a waterproof resin layer 12 having a thickness of about 1 mm to 3 mm (as an example, 2 mm) is formed on the surface of the foamed adhesive layer 11 (another example of “second treatment”).

  Thereafter, after the waterproof resin layer 12 is sufficiently dried and cured, a surface protective layer 13 is formed on the surface of the waterproof resin layer 12 as shown in FIGS. (Another example of “third process”). Thereby, the waterproof resin layer 12 is prevented from being degraded by hydrolysis or ultraviolet rays. As described above, the slate roof 21 is covered with the reinforcing material layer (laminate) including the foamed adhesive layer 11, the waterproof resin layer 12, and the surface protective layer 13, and the reinforcement work of the slate roof 21 is completed.

  Thus, according to this exterior reinforcement method, the waterproof resin layer 12 is bonded to the surface of the slate material 22 by blowing the foamable resin material onto the surface of the slate material 22 constituting the slate roof 21 and foaming. A slate is formed by executing a “first process” for forming the foamed adhesive layer 11 and a “second process” for spraying a non-foamable resin material onto the surface of the foamed adhesive layer 11 to form the waterproof resin layer 12 in this order. By reinforcing the roof 21, the gap S, crack X, etc. are closed by the foam adhesive layer 11 that is first formed on the slate material 22, so the gap S, crack X, etc. are closed before the start of the reinforcement work. As a result, the cost required for reinforcing the slate roof 21 can be sufficiently reduced, and the slate roof 21 can be reinforced with a very short construction period. Moreover, since the waterproof resin layer 12 can be sufficiently strongly bonded to the slate material 22 by the foamed adhesive layer 11, the situation where the waterproof resin layer 12 and the surface protective layer 13 are peeled off from the slate roof 21 after construction is avoided. can do. Furthermore, since it is not necessary to form the waterproof resin layer 12 excessively thick for the purpose of closing the gaps S, cracks X, etc., by increasing the thickness of the waterproof resin layer 12 to a necessary and sufficient thickness, the material cost increases. This can be avoided and the waterproof resin layer 12 can be suitably dried and cured, so that the appearance (finish) of the slate roof 21 after the reinforcement work can be made sufficiently beautiful.

  Moreover, according to this exterior reinforcement method, by forming the foamed adhesive layer 11 having a thickness of 3 mm or more and less than 5 mm in the “first treatment”, the thickness of the foamed adhesive layer 11 is too thin, so that the gap S or the crack X is generated. The slate roof is not obstructed or the thickness of the foamed adhesive layer 11 is too thick, resulting in an increased burden on the slate roof 21 due to an increase in the weight of the foamed adhesive layer 11 and an increase in material cost. 21 can be sufficiently reinforced.

  Furthermore, according to this exterior reinforcement method, by performing “third treatment” in which a protective agent is applied to the surface of the foamed adhesive layer 11 to form the surface protective layer 13, hydrolysis of the waterproof resin layer 12 and ultraviolet rays are performed. It is possible to delay the progress of deterioration due to the above, and to sufficiently extend the aspect life of the foamed adhesive layer 11 and the waterproof resin layer 12 that reinforce the slate roof 21.

  The “exterior reinforcement method” is not limited to the above example. For example, the method of reinforcing the “roof” such as the tin roof 1 and the slate roof 21 as the “building exterior” has been described as an example, but the tin outer wall composed of the tin 4 (other “building exterior”) has been described. For example, when reinforcing a slate outer wall (a further example of “building exterior”) in which a plurality of slate members 22 are arranged side by side, the reinforcing method for the tin roof 1 and the slate roof 21 By forming the foamed adhesive layer 11, the waterproof resin layer 12, and the surface protective layer 13 in the same process as the reinforcing method, the same effect as the reinforcement of the tin roof 1 and the slate roof 21 can be obtained.

  Further, a method of reinforcing the tin roof 1 constituted by the tin 4 (groove plate 4a, the hanging element 4b and the cap material 4c) as the “exterior material”, and a slate constituted by the slate material 22 as the “exterior material”. The method of reinforcing the roof 21 has been described as an example, but the “building exterior” that is reinforced by the “exterior reinforcing method” is not limited to the above example in which the tin 4 or the slate material 22 is the “exterior material”. , Bricks, tiles, ceramic tiles, fiber reinforced cement boards, gypsum boards, metal boards, wood boards, natural stones and artificial stones, concrete, plaster and earth (components of earth walls), etc. These are suitably formed by forming the foamed adhesive layer 11, the waterproof resin layer 12, and the surface protective layer 13 in the same process as the method for reinforcing the tin roof 1 and the method for reinforcing the slate roof 21 when reinforcing the exterior of the building. It can be reinforced.

  Further, although different from the above example, before the step of forming the surface protective layer 13 on the waterproof resin layer 12, or so as to cover the surface protective layer 13 formed on the waterproof resin layer 12 Other functional layers (for example, a coating layer for coloring the tin roof 1 or the slate roof 21) can also be formed.

DESCRIPTION OF SYMBOLS 1 Tin roof 2 Field plate 3 Waterproof sheet 4 Ton 4a Groove plate 4b Hanging element 4c Cap material 11 Foam adhesive layer 12 Waterproof resin layer 13 Surface protection layer 21 Slate roof 22 Slate material 23 Fastener S Gap X Crack

Claims (3)

It is an exterior reinforcement method for reinforcing the building exterior by forming a waterproof resin layer on the surface of the exterior material in the exterior of the building configured by arranging the exterior material on the surface,
A first treatment for forming a foamed adhesive layer for adhering the waterproof resin layer on the surface of the exterior material by spraying a foamable resin material on the surface of the exterior material to cause foaming, and on the surface of the foamed adhesive layer The exterior reinforcement method which reinforces the said exterior of a building by performing the 2nd process which sprays a non-foamable resin material and forms the said waterproof resin layer in this order.   The exterior reinforcement method according to claim 1, wherein the foamed adhesive layer having a thickness of 3 mm or more and less than 5 mm is formed in the first treatment.   The exterior reinforcement method of Claim 1 or 2 which performs the 3rd process which apply | coats a protective agent to the surface of the said waterproof resin layer, and forms a surface protective layer.

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