JP2011196081A - Building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably check the occurrence of a deterioration in a pained layer of a building material in which the painted layer is formed on a surface of a base material.SOLUTION: An exterior wall material 10 includes the base material 11, and the painted layer 12 which is formed on the surface of the base material 11. A deterioration marker 20, which comprises a head 21 formed in a cone shape and a shaft portion 22 elongated from the bottom surface of the head 21, is attached by having the shaft portion 22 driven into the base material 11. In this attached state, the head 21 is protruded from the surface of the base material 11; and the height of this protrusion is set smaller in dimension than the film thicknesses of the painted layer 12. The film thickness of the painted layer 12 in a region provided with the head 21 is set smaller than the film thicknesses of other regions. Thus, when the film thicknesses of the painted layer 12 is reduced due to the aged deterioration of the painted layer 12 and the like, the head 21 is exposed before the exposure of the surface of the base material 11.

Description

  The present invention relates to a building material.

  In a building such as a house, a coating is sometimes applied to the surface side of an exterior material such as a roof material or an outer wall material in order to improve weather resistance and design properties. In this case, a coating layer having a predetermined film thickness is formed on the surface of the exterior material. Since this coating layer deteriorates with time due to the influence of ultraviolet rays, wind and rain, etc., the film thickness of the coating layer gradually decreases with the deterioration. Therefore, when the coating deteriorates, the exterior material is repaired by repainting or the like.

  Further, as the coating deterioration progresses, a part of the coating layer is eventually peeled off and a part of the surface of the base material is exposed, so that the base material may be corroded from the exposed part. When corrosion occurs, it becomes difficult to repair by repainting. Therefore, when the coating deteriorates over time, it is required to perform repainting before the coating peels off.

  By the way, since the aging deterioration of the coating occurs gently over the entire surface of the exterior material, it is difficult to confirm the deterioration only by visually observing the coating surface. Therefore, when judging the deterioration of the coating, for example, a deterioration judging method based on JISK5600-8-6 is used (Non-Patent Document 1). In this method, the degree of deterioration is determined based on the amount of paint adhered to the adhesive surface of the tape by attaching the adhesive tape to the coating layer and then peeling the adhesive tape.

Published by Japan Standards Association, "JIS paint general test method, Part 8: Evaluation of paint film deterioration-, Section 6: Chlorization grade JISK5600-8-6", April 20, 1999

  By the way, since the exterior material is installed outdoors, it is conceivable that fine foreign matters such as dust adhere to the painted surface of the exterior material. Therefore, when the deterioration determination method based on the above-mentioned Non-Patent Document 1 is adopted, it is assumed that such foreign matter adheres to the adhesive tape, and in this case, it is determined whether the material attached to the adhesive tape is paint or foreign matter. It becomes difficult to determine whether or not the coating layer has deteriorated.

  Moreover, in the method of the said nonpatent literature 1, it is possible that dispersion | variation arises in the adhesion amount of the coating material to an adhesive tape by the kind, sticking method, etc. of an adhesive tape. Therefore, even when it is determined that the coating has not deteriorated based on such a method, the deterioration may actually be in progress, in which case the opportunity to perform repainting on the base material is missed, and as a result There is a possibility that a part of the coating layer is peeled off. That is, it can be said that it is difficult to appropriately confirm that the coating layer has deteriorated with the conventional deterioration determination method.

  The deterioration of the paint layer can occur not only in the paint layer formed on the exterior material but also in the paint layer formed on other building materials such as the inner wall material. For example, in the case of an inner wall material installed in a sunny room, it is conceivable that the coating layer deteriorates over time due to the influence of ultraviolet rays as in the case of the exterior material. And when it is going to confirm degradation of coating in this inner wall material, it is possible that the same problem as the above arises.

  The present invention has been made in view of the above circumstances, and in the building material in which the coating layer is formed on the surface of the base material, the main purpose is to be able to suitably confirm that the coating layer has deteriorated. To do.

  In order to solve the above problems, a building material of the first invention is a building material comprising a base material and a coating layer formed with a predetermined film thickness on the surface of the base material, and on the surface of the base material A protrusion having a protrusion height smaller than the film thickness of the coating layer is provided, and the coating layer is formed on the surface side of the protrusion with a film thickness smaller than the predetermined film thickness. It is characterized by that.

  According to the present invention, since the coating layer is formed on the surface of the base material of the building material so that the thickness of the coating layer in the portion where the protruding portion is provided is smaller than the thickness in the other portion, When the film thickness of the coating layer becomes small due to aging degradation of the coating layer, the protruding portion is exposed before the surface of the substrate is exposed. In this case, since the protrusion is exposed, it can be confirmed before the base material is exposed that the coating layer has deteriorated, so it is preferable to confirm that the coating layer has deteriorated. Can do.

  Moreover, it is preferable that the protrusion part is colored with the color different from the coating color of a coating layer. If it does so, it can make it easy to confirm that the protrusion part was exposed.

  A building material of a second invention is the building material of the first invention, wherein the protruding portion is formed in a mountain shape, and is smaller than the predetermined film thickness at the top of the protruding portion on the surface side of the protruding portion. The coating layer is formed with a film thickness.

  In the process of applying the paint to the surface of the substrate, immediately after applying the paint, if the substrate is left with the substrate surface facing upward, the applied paint is gradually smoothed over time. It becomes flat. However, if the upper surface of the projecting portion is formed as a flat surface, the paint may remain on the flat surface and a step may occur on the painted surface. In this regard, in the present invention, since the protruding portion is formed in a mountain shape, the paint is smoothed in the same manner as the other portions even in the portion where the protruding portion is provided. Can be formed. In this case, since the effect of reliably reducing the film thickness of the coating layer at the top of the projecting portion can be expected to be smaller than the film thickness at the site where the projecting portion is not provided, it is preferable to obtain the effect of the first invention. It can be said.

  In the building material of the third invention, in the first or second invention, a flat region obtained by flattening a part of the ground surface of the base material is provided, and the protruding portion is provided in the flat region. Features.

  In the base material base, there are many fine irregularities on the surface, and considering the provision of protrusions on this substrate, the film thickness of the coating layer in the part where there is a protrusion is the film thickness in the part where there is no protrusion There may be cases where the thickness cannot be made smaller than the thickness. Therefore, in the present invention, in view of this point, a configuration is provided in which a flat region obtained by flattening a part of the base material of the base material is provided, and a protruding portion is provided in the flat region. Thereby, also in the base material in which many fine unevenness | corrugations exist in a base material, the film thickness of the coating layer in the site | part with a protrusion part can be reliably made smaller than the film thickness in another site | part.

  A building material according to a fourth invention is characterized in that, in any one of the first to third inventions, a plurality of protrusions having different protrusion heights are provided as the protrusions.

  According to the present invention, since the plurality of protrusions having different protrusion heights are provided on the surface of the base material, the degree of deterioration of the coating layer can be confirmed in a plurality of stages. This makes it possible to take measures according to the degree of deterioration of the coating layer when performing repainting.

  The building material of 5th invention is 4th invention. As said coating layer, the 1st coating layer formed in the surface of the said base material, The 2nd coating layer formed in the surface of the said 1st coating layer, And the projecting height is larger than the film thickness of the first coating layer and the projecting height is higher than the sum of the film thickness of the first coating layer and the film thickness of the second coating layer. A first protrusion having a small height and a second protrusion having a protrusion height smaller than the film thickness of the first coating layer are provided.

  According to the present invention, the protrusion height of the first protrusion is larger than the film thickness of the first paint layer, and smaller than the sum of the film thickness of the first paint layer and the film thickness of the second paint layer. Therefore, when the deterioration of the second coating layer occurs, the first projecting portion is exposed before the first coating layer is exposed. Thereby, it can confirm before the 1st coating layer is exposed that degradation has arisen in the 2nd coating layer. In addition, since the protrusion height of the second protrusion is smaller than the film thickness of the first coating layer, when the first coating layer is deteriorated, the first surface is exposed before the surface of the substrate is exposed. 2 Protrusions are exposed. Thereby, it can confirm before the surface of a base material exposes that the 1st coating layer has deteriorated. Therefore, when the coating layer which consists of two layers from the above is formed in the surface of a base material, deterioration of each coating layer can each be confirmed suitably.

  The building material of the sixth invention is characterized in that, in the fourth or fifth invention, the plurality of protrusions are colored in different colors.

  According to the present invention, since the plurality of protrusions having different protrusion heights are colored in different colors, it is possible to easily check which protrusion is exposed when the coating layer is deteriorated. In this case, it can be said that this structure is suitable for obtaining the effect of the fourth invention. Moreover, it is desirable to color a warning color such as red or yellow for a protrusion having a low protrusion height (for example, the lowest) among the plurality of protrusions. As a result, when a protruding portion with a low protruding height is exposed, that is, when the coating film has deteriorated remarkably, the fact can be appealed visually, and early repainting is encouraged. it can.

The front view which shows the outer wall material in 1st Embodiment. Sectional drawing which shows the structure of an outer wall material. The longitudinal cross-sectional view which shows the structure around a deterioration marker. The longitudinal cross-sectional view which shows the structure of the deterioration marker periphery in 2nd Embodiment.

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the present invention is embodied with respect to an outer wall material that forms an outer wall surface of a building as a building material. A bracket is attached to the back side of the outer wall material, and the bracket is fixed to a structure such as a beam so that the outer wall material is installed on the outer periphery of the building. FIG. 1 is a front view showing an outer wall material, where (a) shows the entire outer wall material, and (b) shows an enlarged main portion of the outer wall material. FIG. 2 is a cross-sectional view showing the configuration of the outer wall material.

  As shown in FIGS. 1 and 2, the outer wall material 10 has a rectangular flat plate-like base material 11, and a coating layer 12 is formed on the surface of the base material 11. The base material 11 is comprised by the ceramic industry type siding board, and many fine unevenness | corrugations exist in the base surface.

  The surface of the base material 11 is provided with an uneven pattern. Specifically, a plurality of horizontal grooves 15 extending in the entire width direction are formed on the surface of the base material 11 at predetermined intervals in the vertical direction, while adjacent horizontal grooves 15 extending in a direction orthogonal to the horizontal grooves 15 are adjacent to each other. Are formed at predetermined intervals in the width (left and right) direction. A portion surrounded by the horizontal grooves 15 and the vertical grooves 16 is a convex portion 17, and the surface of the convex portion 17 is a substantially flat surface formed in a rectangular shape. More specifically, the side surfaces of the grooves 15 and 16 are inclined surfaces, and the bottom surfaces of the grooves 15 and 16 and the surfaces of the convex portions 17 are continuous through the inclined surfaces. Therefore, in this embodiment, the surface of the base material 11 is comprised by the surface of the convex part 17, and the surface (bottom surface and side surface) of each groove | channel 15,16, and is formed in uneven | corrugated shape as a whole.

  The coating layer 12 is formed of a paint having weather resistance, and is made of, for example, a paint made of an acrylic silicon material. The coating layer 12 is formed in a film shape along the surface of the base material 11 (that is, the surface of the grooves 15 and 16 and the surface of the convex portion 17), and the film thickness thereof is almost uniform throughout the base material 11. Yes. The coating layer 12 is formed by, for example, spray coating. However, the coating method is not limited to spray coating, and other methods such as roll coating may be used.

  On the surface of the base material 11, a protruding portion having a protruding height smaller than the thickness of the coating layer 12 is provided. The present embodiment is characterized in that this protrusion is provided, and the details thereof will be described below.

  As shown in FIGS. 1 and 2, a deterioration marker 20 is attached to the surface side of the base material 11. Among the plurality of protrusions 17 provided on the base material 11, a plurality of deterioration markers 20 (9 in FIG. 1) are attached to predetermined protrusions 17 (hereinafter referred to as deterioration confirmation protrusions 17a). Each deterioration marker 20 is provided as a marker group in a dense state in the deterioration confirmation convex portion 17a. Moreover, in this embodiment, the deterioration confirmation convex part 17a is set in the corner part in the base material 11, and specifically, the lower corner part (FIG. 1) in the state which installed the base material 11 in the building. In the left and right corners). However, the deterioration confirmation convex portion 17a is not necessarily provided at the corner of the base material 11, and may be provided at other portions such as the central portion of the base material 11.

  Here, as described above, there are a lot of fine irregularities on the surface of the substrate 11, and the degradation confirmation convex part 17 a to which the degradation marker 20 is attached is removed by the surface processing. The surface is smooth as compared with the convex portion 17. Moreover, in this embodiment, the unevenness | corrugation is removed in the whole surface of the deterioration confirmation convex part 17a. Here, the surface of the deterioration confirmation convex portion 17a corresponds to a flat region.

  Next, the configuration around the deterioration marker 20 will be described with reference to FIG. FIG. 3 is a longitudinal sectional view showing a configuration around the deterioration marker 20.

  As shown in FIG. 3, the deterioration marker 20 is attached to the surface side of the base material 11. The deterioration marker 20 is made of metal, for example, and has a head portion 21 formed in a substantially conical shape and a shaft portion 22 extending from the bottom surface of the head portion 21. The height H of the head 21 (hereinafter referred to as the head height H) is smaller than the film thickness t of the coating layer 12 (specifically, the distance from the surface of the substrate 11 to the surface 25 of the coating layer 12). Is set. The shaft portion 22 is formed to have a diameter smaller than the outer diameter of the head portion 21, and therefore a part of the head portion 21 protrudes from the outer peripheral surface of the shaft portion 22.

  The head 21 of the deterioration marker 20 does not necessarily have a conical shape, and may have another mountain shape such as a triangular pyramid shape. Further, the head 21 does not necessarily have a mountain shape, and may have other shapes such as a plate shape or a block shape.

  The deterioration marker 20 is attached to the base material 11 by the shaft portion 22 being driven into the base material 11. In this case, the head 21 of the deterioration marker 20 protrudes from the surface of the base material 11, so that the surface of the base material 11 has a protruding portion (that is, the protrusion height from the surface becomes H (that is, A head 21) is provided. And since H is smaller than the film thickness t of the coating layer 12 as described above, the head 21 is buried in the coating layer 12. Here, since the surface 25 (exposed surface) of the coating layer 12 is formed in parallel and flat with the surface of the base material 11, in this case, the surface 26 of the head 21 of the deterioration marker 20 and the surface 25 of the coating layer 12. Is smaller than the distance between the surface of the base material 11 and the surface 25 of the coating layer 12. That is, the film thickness ta of the coating layer 12 at the installation site of the deterioration marker 20 (head 21) is set to ta (to distinguish it from the film thickness other than the installation site of the deterioration marker 20), and the deterioration marker 20 is installed. It is smaller than the film thickness t at the part that is not. For example, at the top portion 21 a of the head 21, the film thickness ta of the coating layer 12 is smaller by the head height H than the film thickness t at the portion where the deterioration marker 20 is not installed.

  Next, the work content when painting the outer wall material 10 will be described.

  First, an operation of attaching the deterioration marker 20 to the base material 11 is performed before coating the base material 11. In this operation, first, an operation for smoothly processing the surface of the deterioration confirmation convex portion 17a of the base material 11 is performed. This processing is performed, for example, when the uneven pattern on the surface of the base material 11 is formed by a dedicated machining apparatus. After such processing is completed, an operation of attaching the deterioration marker 20 to the base material 11 is performed. For example, the deterioration marker 20 is attached to the surface of the deterioration confirmation convex portion 17a in a state of being aligned by a dedicated jig.

  Next, a painting operation for painting the base material 11 is performed. This painting operation is performed in a state where the base material 11 to which the deterioration marker 20 is attached is placed on the belt conveyor. Specifically, the base material 11 is placed on the belt conveyor in a state where the surface side is directed upward. And a coating is performed by spraying a coating material on the surface of the base material 11 with the spray apparatus installed above the belt conveyor.

  Next, a leaving operation for leaving the coated substrate 11 for a predetermined period (for example, 5 minutes) is performed. In this leaving operation, the base material 11 is left on the belt conveyor with its surface side directed upward. The paint applied to the surface of the substrate 11 is gradually smoothed over time and becomes flat. However, if the upper surface of the head 21 of the deterioration marker 20 is formed as a flat surface, the paint remains on the flat surface and a step is generated on the painted surface. In this respect, in the present embodiment, since the head 21 of the deterioration marker 20 is formed in a mountain shape, the paint is smoothed at the installation site of the deterioration marker 20 in the same manner as the other sites, and as a result, the entire surface is flat. A painted surface is formed.

  After the leaving operation is completed, the base material 11 is placed in a drying furnace, and the drying operation is performed. By this operation, moisture contained in the paint applied to the substrate 11 is removed and the paint is solidified. Thereby, the coating layer 12 is formed on the surface of the base material 11, and the coating operation is completed.

  Next, an operation when the deterioration of the coating layer 12 is confirmed by the deterioration marker 20 will be described.

  When the coating layer 12 deteriorates over time due to the influence of wind and rain, ultraviolet rays, etc., the film thickness of the coating layer 12 gradually decreases. Here, since the film thickness of the coating layer 12 is smaller than the other part in the installation part of the deterioration marker 20 as described above, the head of the deterioration marker 20 is exposed before the surface of the base material 11 is exposed. 21 is exposed. Therefore, it can be confirmed that the coating layer 12 has deteriorated before the surface of the base material 11 is exposed, because the head 21 is exposed. Specifically, after a predetermined period (for example, 5 years) has elapsed since the outer wall material 10 was installed (many of the buildings are constructed), the corner of the outer wall material 10 to which the deterioration marker 20 is attached is visually or magnified. Confirm with a magnifying glass. Thereby, when it is confirmed that the deterioration marker 20 (head 21) is exposed, it is possible to take measures such as repainting before the base material 11 is exposed.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  On the surface of the base material 11, a protruding portion having a protruding height smaller than the thickness of the coating layer 12, specifically, a head 21 of the deterioration marker 20 is provided, and the coating layer in a portion where the head 21 is provided. The film thickness of 12 was made smaller than the film thickness at other sites. Thereby, when the film thickness of the coating layer 12 becomes small due to aging degradation or the like of the coating layer 12, the head of the deterioration marker 20 is exposed before the surface of the base material 11 is exposed due to peeling of the coating layer 12 or the like. 21 is exposed. Therefore, since the head 21 is exposed, it can be confirmed that the coating layer 12 is deteriorated before the base material 11 is exposed. Therefore, it is preferable that the coating layer 12 is deteriorated. Can be confirmed.

  The head 21 of the deterioration marker 20 was formed in a mountain shape. In this case, after the coating material is applied to the surface of the base material 11 and before the coating material is solidified, if the base material 11 is left with the surface of the base material 11 facing upward, a portion where the head 21 is provided. As in other parts, the paint can be smoothed in the same manner as other parts to form a flat painted surface as a whole. As a result, an effect of reliably reducing the film thickness of the coating layer 12 at the site where the head 21 is provided can be expected to be smaller than the film thickness at the site where the head 21 is not provided. This can be said to be a suitable configuration.

  A flat region obtained by performing a flattening process was provided on a part of the ground surface of the substrate 11, and a head 21 was provided in the flat region. Thereby, also in the base material 11 in which many fine unevenness | corrugations exist in a base material, the film thickness of the coating layer 12 in the site | part in which the head 21 was provided can be reliably made smaller than the film thickness in another site | part.

  Specifically, the entire surface of the deterioration confirmation convex portion 17a is a flat region, and the deterioration marker 20 is provided in the flat region. In this case, it is possible to reliably avoid the inconvenience that the thickness of the coating layer 12 at the portion where the head 21 is provided is smaller than the thickness of the coating layer 12 on the fine convex portion of the substrate 11 surface. Can do.

  In the case where an uneven pattern or the like is formed on the surface of the base material 11, the surface on the convex side protruding to the outdoor side is more susceptible to wind and rain or ultraviolet rays than the surface on the concave side. Conceivable. Therefore, in the above configuration, in view of that point, the deterioration marker 20 (head) with respect to the convex portion 17 on the convex portion side in the base material 11 having concave portions (specifically, groove portions 15 and 16) and convex portions on the surface. Part 21). Thereby, since it is possible to confirm the deterioration of the coating on the portion that is likely to deteriorate on the surface of the base material 11, it is convenient to confirm that the coating deterioration has occurred before the base material 11 is exposed.

[Second Embodiment]
In the present embodiment, a plurality of protrusions having different protrusion heights are provided on the surface of the substrate 11. Hereinafter, the configuration of the present embodiment will be described based on FIG. 4 with a focus on differences from the first embodiment. FIG. 4 is a longitudinal sectional view showing the configuration around the deterioration marker.

  As shown in FIG. 4, in the outer wall material 30 in the present embodiment, a first coating layer 31 is formed on the surface of the base material 11, and a second coating layer 32 is formed on the surface 41 of the first coating layer 31. ing. The first coating layer 31 is for filling a large number of minute concave portions existing on the substrate surface of the base material 11 and is made of, for example, a sealer for sealing. By forming the first coating layer 31 on the surface of the base material 11, the coating surface on which the second coating layer 32 is coated is flattened, and as a result, the second coating layer exposed to the outdoor side in the outer wall material 30. The unevenness of the base material 11 is prevented from appearing on the surface 42 of 32.

  The second coating layer 32 is formed of a paint having weather resistance, and is made of, for example, a paint made of an acrylic silicon material. The second coating layer 32 is a colored layer, and is colored brown in this embodiment. The surfaces 41 and 42 of these coating layers 31 and 32 are both formed in parallel and flat with the surface of the base material 11, and therefore the film thickness t 1 of the first coating layer 31 and the film thickness of the second coating layer 32. t2 is substantially uniform over the entire surface of the base material 11 (except for portions where deterioration markers 35 and 36 described later are installed). In addition, the 1st coating layer 31 and the 2nd coating layer 32 are formed by spray coating, for example.

  A first deterioration marker 35 and a second deterioration marker 36 are provided on the surface of the substrate 11. In the present embodiment, both deterioration markers 35 and 36 are provided on the surface of each deterioration confirmation convex portion 17 a in the base material 11. The first deterioration marker 35 and the second deterioration marker 36 have different head heights 38 and 39, and the head height H1 of the first deterioration marker 35 is the head height H2 of the second deterioration marker 36. Is bigger than. Specifically, the head height H <b> 1 of the first deterioration marker 35 is larger than the film thickness t <b> 1 of the first coating layer 31, and the film thickness t <b> 1 of the first coating layer 31 and the film thickness of the second coating layer 32. The dimension is set to be smaller than the sum of t 2, and the head height H 2 of the second deterioration marker 36 is set to be smaller than the film thickness t 1 of the first coating layer 31. Therefore, in a state where the deterioration markers 35 and 36 are attached to the base material 11, the protruding height of the head portion 38 of the first deterioration marker 35 is H1, and the second coating layer 32 at the installation site of the first deterioration marker 35. Is smaller than the film thickness t2 of the second coating layer 32 in other parts. On the other hand, the protruding height of the head 39 of the second deterioration marker 36 is H2, and the film thickness of the first coating layer 31 at the installation site of the second deterioration marker 36 is the film thickness t1 of the first coating layer 31 at the other site. Is smaller than Here, the head 38 of the first deterioration marker 35 corresponds to the first protrusion, and the head 39 of the second deterioration marker 36 corresponds to the second protrusion.

  The first deterioration marker 35 and the second deterioration marker 36 are colored with different colors, and the second deterioration marker 36 is colored with a warning color that is easy to appeal to the eye. In the present embodiment, the first deterioration marker 35 is colored in blue and the second deterioration marker 36 is colored in red. In the present embodiment, the deterioration markers 35 and 36 are colored with a color different from the paint color (brown) of the second paint layer 32. In addition, such coloring should just be performed to the heads 38 and 39 at each degradation marker 35 and 36. FIG.

  Next, an operation when the deterioration of the coating layers 31 and 32 is confirmed using the deterioration markers 35 and 36 will be described.

  In the case of this embodiment, since the film thickness of the second coating layer 32 in the installation site of the first deterioration marker 35 (head 38) is smaller than the film thickness of the second coating layer 32 in other sites, When the second coating layer 32 deteriorates over time and the film thickness of the second coating layer 32 decreases, the head portion 38 of the first deterioration marker 35 is exposed before the first coating layer 31 is exposed. Therefore, it is possible to repaint the second coating layer 32 before the first coating layer 31 is exposed and the first coating layer 31 starts to deteriorate. Moreover, since the base material 11 is still protected by the 1st coating layer 31 at this stage, it can take flexible measures, such as only recommending repainting to a resident for a building maker or the like.

  As the aging deterioration of the second coating layer 32 proceeds, the first coating layer 31 is eventually exposed and the first coating layer 31 starts to deteriorate. Here, since the film thickness of the 1st coating layer 31 in the installation site | part of the 2nd degradation marker 36 (head 39) is smaller than the film thickness of the 1st coating layer 31 in another site | part, it is 1st coating. When the layer 31 deteriorates with age and the film thickness of the first coating layer 31 decreases, the head 39 of the second deterioration marker 36 is exposed before the surface of the substrate 11 is exposed. Therefore, before the base material 11 is exposed and the base material 11 starts to deteriorate, the first coating layer 31 can be repainted. In this case, since the base material 11 will soon be exposed, it is possible for the building maker to take strong measures such as prompting (warning) the resident to repaint.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  A plurality of protrusions having different protrusion heights on the surface of the substrate 11, specifically, heads 38 and 39 of the deterioration markers 35 and 36 were provided. In this case, when the head 38 having a large protruding height is exposed, it is determined that the coating starts to deteriorate, or when the head 39 having a small protruding height is exposed, the coating is significantly deteriorated. The degree of deterioration of the coating layers 31 and 32 can be confirmed in a plurality of stages, such as determining that the coating is progressing. As a result, if it is judged that the deterioration of the paint has started to progress, the repainting will be skipped if the repainting is skipped, or if it is judged that the paint has deteriorated remarkably, the repainting will be carried out immediately. It is possible to take measures according to the degree of deterioration of the coating layer when performing the above.

  Since the head portion 38 of the first deterioration marker 35 and the head portion 39 of the second deterioration marker 36 are colored in different colors, which head portions 38 and 39 are exposed when the coating layers 31 and 32 are deteriorated. It can be easily confirmed. In this case, it can be said that the configuration is suitable for obtaining the above-described effect.

  Further, since the head 39 with the lower protrusion height is colored with a warning color, when the head 39 with the lower protrusion height is exposed, that is, the coating deterioration has progressed to the first coating layer 31. In some cases, it can be appealed visually, so early repainting can be promoted.

[Other Embodiments]
The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In each of the above embodiments, the protrusions are configured by the heads 21, 38, 39 of the deterioration markers 20, 35, 36 by attaching the deterioration markers 20, 35, 36 to the base material 11. The configuration is not necessarily limited to this. For example, the protruding portion may be configured by the protruding portion by attaching a needle-like member formed entirely in a needle shape to the substrate 11 in a state where the needle-like member is partially protruded from the surface of the substrate 11. . In this case, a plurality of needle-like members may be provided densely in a predetermined region on the surface of the substrate 11. Then, when the coating layer 12 deteriorates and the acicular member is exposed, it can be easily confirmed that the needle member has been exposed. In this case, it can be expected that the degree of deterioration is confirmed by the exposure state of the needle-like member, that is, by the number of exposed needle-like members.

  Further, the protruding portion is not necessarily configured as a separate body from the base material 11, and the protruding portion may be integrally formed with the base material 11. If it does so, since a protrusion part can be formed collectively, when manufacturing the base material 11, compared with the case where a protrusion part is manufactured separately and attached to a base material, the work man-hour at the time of providing a protrusion part is reduced. Can be made.

  (2) In each of the above embodiments, the deterioration markers 20, 35, and 36 are provided on the surface of the convex portion 17 in the base material 11, but the deterioration markers 20 and 35 are provided on other portions such as the surfaces (bottom surfaces) of the grooves 15 and 16. , 36 may be provided. Moreover, in the said embodiment, although the deterioration markers 20, 35, and 36 were provided only in the corner part in the base material 11, for example, the deterioration markers 20 and 35 with respect to the surface of each convex part 17 in the some location in the base material 11. , 36 may be provided. Since it is thought that the progress speed of the coating deterioration varies depending on the portion of the base material 11, it is more reliably confirmed that the coating has deteriorated by providing the deterioration markers 20, 35, and 36 at a plurality of locations as described above. I can. Further, in each of the above embodiments, the plurality of deterioration markers 20, 35, and 36 are provided in a dense state on the deterioration confirmation convex portion 17a. However, even if only one deterioration marker 20, 35, and 36 is provided on the deterioration confirmation convex portion 17a. Good.

  (3) In each of the above embodiments, the deterioration markers 20, 35, and 36 are provided on the surface of the deterioration confirmation protrusion 17a that has been smoothed by removing the unevenness of the substrate surface in the substrate 11, but the surface of the substrate 11 The deterioration markers 20, 35, and 36 may be provided in portions where fine irregularities are present. In each of the above embodiments, the entire surface of the deterioration confirmation convex portion 17a is smoothed. However, by changing this, only a part of the surface of the deterioration confirmation convex portion 17a is smoothed and deteriorated to the smoothed region. Markers 20, 35, and 36 may be provided. If it does so, the processing operation at the time of smoothing the substrate 11 surface can be made easy.

  (4) In the second embodiment, the present invention is applied to the outer wall material 30 in which the two coating layers 31 and 32 are formed on the surface of the base material 11, but three or more coating layers are formed. The present invention may be applied to the outer wall material made. In that case, it is preferable to prepare deterioration markers having different head heights according to the number of coating layers.

  (5) In the second embodiment, the two heads 38 and 39 having different protruding heights are provided on the surface of the base material 11, but three or more heads having different protruding heights may be provided. .

  (6) In the second embodiment, the plurality of heads 38 and 39 having different projecting heights are provided on the outer wall member 30 having the two coating layers 31 and 32. However, the coating layer is a single layer. A plurality of heads having different projecting heights may be provided with respect to the outer wall material having the shape, for example, the outer wall material 10 of the first embodiment. Even in this case, since the degree of deterioration of the coating layer 12 can be confirmed, it is possible to take measures corresponding to the degree of deterioration during repainting.

  (7) In each of the above embodiments, a ceramic siding board is used as the base material 11, but other ceramic materials such as an extruded cement plate and ALC may be used, and a resin material such as vinyl chloride is used. May be. Moreover, in the said embodiment, although this invention was applied to the base material 11 by which the pattern of the uneven | corrugated pattern was given to the surface, this invention is applied to the base material of other shapes, such as a flat-shaped base material without the pattern. You may apply.

  (8) In the above embodiments, the present invention is applied to the outer wall material 10 as the exterior material. However, the present invention may be applied to other exterior materials such as a roof material. Further, the present invention may be applied not only to exterior materials but also to interior materials such as inner wall materials, that is, building materials in general.

  DESCRIPTION OF SYMBOLS 10 ... Exterior material as building material, 11 ... Base material, 12 ... Paint layer, 20 ... Degradation marker, 21 ... Head as protrusion part, 30 ... Exterior material as building material, 31 ... 1st coating layer, 32 ... 1st 2 coating layers, 35 ... first deterioration marker, 36 ... second deterioration marker, 38 ... head as a first protrusion, 39 ... head as a second protrusion.

Claims (6)

A substrate;
A building material comprising a coating layer formed with a predetermined film thickness on the surface of the base material,
The surface of the substrate is provided with a protruding portion having a protruding height smaller than the thickness of the coating layer,
The building material, wherein the coating layer is formed with a film thickness smaller than the predetermined film thickness on the surface side of the protrusion. The protrusion is formed in a mountain shape,
2. The building material according to claim 1, wherein the coating layer is formed on the surface side of the protruding portion at a top portion of the protruding portion with a film thickness smaller than the predetermined film thickness.   The building material according to claim 1 or 2, wherein a flat region obtained by flattening a part of the base surface of the base material is provided, and the protruding portion is provided in the flat region.   The building material according to any one of claims 1 to 3, comprising a plurality of protrusions having different protrusion heights as the protrusions. As the coating layer, it comprises a first coating layer formed on the surface of the substrate, and a second coating layer formed on the surface of the first coating layer,
As the plurality of protrusions, the protrusion height is larger than the film thickness of the first paint layer, and the protrusion height is smaller than the sum of the film thickness of the first paint layer and the film thickness of the second paint layer. The building material according to claim 4, wherein a first protrusion and a second protrusion having a protrusion height smaller than the film thickness of the first coating layer are provided.   The building material according to claim 4 or 5, wherein the plurality of protrusions are colored in different colors.

Images