Flooring and method for attaching flooring

Abstract

To provide a floor material which prevents floating and can be replaced without destroying the tongue portion.SOLUTION: A floor material 1 has a first tongue portion 13 and a second tongue portion 14 . The first tongue portion 13 has a front-side protruding portion 131 and a rear-side notch portion 132. The front-side protruding portion 131 has a first upper sloped portion 133 whose upper surface slopes outward to the rear side of the floor material, and a first tip portion 134 perpendicular to the floor material surface. The second tongue portion 14 has a rear-side convex portion 141 and a front-side convex portion 142. A concave portion 143 is formed between the rear-side convex portion 141 and the front-side convex portion 142. The front-side convex portion 142 has a second tip portion 146 perpendicular to the floor material surface. The first tongue portion 13 and the second tongue portion 14 are tongue-connected by fitting the front-side protruding portion 131 into the convex portion 143 of the adjacent floor material 1 .SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a flooring material and a method for attaching the flooring material. [Background technology]

[0002] The bedding materials have male and female inseminations formed on their side edges, and when multiple bedding materials are arranged, the male and female inseminations of adjacent bedding materials are interlocked to unite the multiple bedding materials, preventing them from lifting up individually and allowing the bedding materials to be positioned.

[0003] In recent years, there has been an increase in demand for renovations of rental properties and existing detached houses. To accommodate this increase in renovation demand, there is a demand for flooring materials that can be installed directly on top of existing flooring materials, in order to shorten construction times. Because this type of flooring material is applied over existing building materials, it is required that the product be thin.

[0004] It is known that, when reducing the product thickness of flooring materials, the flooring materials are configured with interlocking portions. For example, a flooring material with interlocking portions has a front-side interlocking portion protruding from one end of the base material layer in the width direction, and a back-side interlocking portion protruding from the other end of the width direction, which is joined to the portion at one end of the width direction of the adjacent flooring material. The interlocking portions of adjacent flooring materials are then overlapped to combine the flooring materials.

[0005] When these interlocking grooves are stacked, the interlocking groove on the front side may rise from the interlocking groove on the back side, causing the flooring to warp or gaps to form between adjacent flooring materials. In such cases, the floor surface is prone to wobbling and creaking. Patent Document 1 discloses a flooring material with a structure that allows for tight joining without wobbling. The flooring material described in Patent Document 1 has a joining groove on one end and a joining ridge on the other end. The joining groove has an acute-angled cross-sectional shape toward the interior of the flooring material, and the joining ridge has an acute-angled cross-sectional shape that corresponds to the cross-section of the joining groove. The joining ridge of one flooring material is designed to fit tightly into the joining groove of the adjacent flooring material. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-17814 Summary of the Invention [Problem to be solved by the invention]

[0007] Incidentally, during renovation, there are cases where replacement of flooring materials (for example, replacing a single piece of flooring material) is performed by removing a portion of the existing flooring material and attaching new flooring materials. In this case, with the flooring material disclosed in Patent Document 1, when attaching the new flooring material, it is necessary to remove the solid portion of the new flooring material (the portion located below the connecting ridges of the adjacent flooring materials). In other words, with the flooring material described in Patent Document 1, it is not possible to replace the flooring material without destroying the solid portion.

[0008] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a flooring material that can be prevented from lifting and can be replaced without destroying the actual part, and a method for attaching the flooring material. [Means for solving the problem]

[0009] In order to achieve the above object, the flooring material of the present invention comprises: A flooring material that extends in one direction, In a cross section perpendicular to the one direction, when the real part provided at one end of the floor material is defined as a first real part and the real part provided at the other end of the floor material is defined as a second real part, The first real part is a surface-side protrusion provided on a surface side of the one end so as to protrude outward; a rear surface side notch provided in a notch shape on a rear surface side of the one end; and the front surface-side protrusion has a first upper surface inclined portion whose upper surface is inclined outward toward the back surface side, and a first tip portion perpendicular to the front surface, The second real part is a rear surface side protrusion provided on the rear surface side of the other end so as to protrude outward; a front-side convex portion provided on the front side of the other end so as to protrude outward and forming a concave portion between the front-side convex portion and the back-side convex portion; and the front surface-side convex portion has a second tip portion perpendicular to the front surface, The surface-side protrusion is fitted into the recess of the adjacent flooring material, thereby solidly connecting the first solid portion and the second solid portion.

[0010] In order to achieve the above object, the method for attaching a flooring material of the present invention comprises the steps of: The method for attaching the flooring material of the present invention comprises the steps of: In the case where a first floor material and a second floor material are installed with a gap therebetween, and the first solid portion of the first floor material faces the second solid portion of the second floor material, and a third floor material is attached between the first floor material and the second floor material, applying adhesive to a substrate between the first flooring and the second flooring; A step of inserting the rear surface side convex portion of the second solid portion of the third floor material, which is in an inclined state such that the second solid portion of the third floor material is lower than the first solid portion of the third floor material, into the rear surface side cutout portion of the first solid portion of the first floor material; Pressing the first solid portion side of the third floor material toward the second solid portion side, so that the surface side protrusion of the first solid portion of the third floor material fits into the recess of the second solid portion of the second floor material; It has. [Effects of the Invention]

[0011] According to the present invention, it is possible to prevent the floor material from lifting up and to replace the floor material without destroying the actual part. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a plan view of the flooring material. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a diagram showing a state in which the first real part and the second real part are real-coupled. [Figure 4] FIG. 4 is a diagram for explaining the engagement allowance of the nuts. [Figure 5] FIG. 5 is a cross-sectional view of a flooring material showing another example of a front surface side protrusion. [Figure 6] FIG. 6 is a diagram illustrating a method for installing a new flooring material between two flooring materials. DETAILED DESCRIPTION OF THE INVENTION

[0013] The flooring material according to the present embodiment will be described below with reference to the drawings. The flooring material according to the present embodiment is a flooring material that can be installed directly on top of existing flooring material, for example, during home renovation. Furthermore, the flooring material according to the present embodiment is configured so that after construction, a portion of the installed flooring material can be replaced without destroying the existing flooring material.

[0014] Fig. 1 is a plan view of the flooring material 1. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1.

[0015] The flooring material 1 extends in one direction. The flooring material 1 comprises a base material 10, a decorative material 11, and a backing material 12. The flooring material 1 is constructed by laminating the decorative material 11, the base material 10, and the backing material 12 in this order. In the following description, the decorative material 11 side is referred to as the front side, and the backing material 12 side is referred to as the back side. The direction in which the flooring material 1 extends is referred to as the longitudinal direction, and the direction perpendicular to the longitudinal direction in the plan view of Figure 1 is referred to as the width direction. Note that in Figure 2, the length in the width direction is partially omitted.

[0016] The substrate 10 is made of a wood substrate, a resin-molded substrate, a gypsum-based substrate, a mineral fiber-based substrate, or a composite of these. Examples of wood substrates include plywood, LVL (Laminated Veneer Lumber), MDF (Medium Density Fiberboard), HDF (High Density Fiberboard), particle board, and OSB (Oriented Strand Board). Examples of composites include wood flour plastic, which is a mixture of wood flour (a wood material) and resin, or SPC (Stone Plastic Composite), which is a mixture of calcium carbonate and vinyl chloride resin.

[0017] The decorative material 11 is laminated on the surface of the base material 10 via an adhesive layer. The decorative material 11 is made of, for example, wood veneer, a resin sheet, or a paper sheet. The wood veneer is veneer or sawn board. The resin sheet is, for example, an olefin sheet or a polyvinyl chloride sheet. A pattern may be printed on the paper sheet.

[0018] The back surface material 12 is laminated on the back surface of the substrate 10 via an adhesive layer. The back surface material 12 is made of, for example, a resin sheet, a moisture-proof sheet, or a wooden sheet. The resin sheet is, for example, polyethylene resin, polypropylene resin, polyethylene terephthalate resin, acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), polystyrene resin, or polyvinyl chloride resin. The moisture-proof sheet is, for example, laminated paper in which resin is laminated on paper, or a metal sheet such as aluminum foil. The wooden sheet is, for example, a veneer.

[0019] The provision of the backing material 12 makes it possible to achieve a balance between the front and back of the decorative material 11, and makes the flooring material 1 less likely to warp. If the backing material 12 is a resin sheet or a moisture-proof sheet, providing the backing material 12 can suppress the elongation and warping of the flooring material 1 that occurs when moisture in the construction adhesive of the flooring material 1 moves to the base material 10.

[0020] Although there are no particular limitations on the thickness of the base material 10, decorative material 11, and back surface material 12, it is preferable that the total thickness of the flooring material 1 be 1.5 mm to 6.0 mm, more preferably 1.5 mm to 4.0 mm. By reducing the total thickness of the flooring material 1, it is possible to install the flooring material 1 directly on top of an existing flooring material.

[0021] The flooring material 1 has a solid portion at each of one end and the other end in the width direction. In the following description, in a cross section perpendicular to the longitudinal direction, the solid portion provided at one end of the flooring material 1 is referred to as the first solid portion 13, and the solid portion provided at the other end of the flooring material 1 is referred to as the second solid portion 14. As will be described in detail later, the first solid portion 13 of one flooring material 1 is solidly connected to the second solid portion 14 of the flooring material 1 arranged adjacent to that one flooring material 1. The first solid portion 13 and the second solid portion 14 are configured to be difficult to break when the first solid portion 13 is solidly connected to the second solid portion 14.

[0022] 3 is a diagram showing a state in which the first real part 13 and the second real part 14 are real-coupled. Hereinafter, the first real part 13 and the second real part 14 will be described with reference to FIGS.

[0023] The first solid portion 13 has a front-side protrusion 131 and a back-side cutout 132. The front-side protrusion 131 is provided so as to protrude outward on the front side of one end of the flooring material 1. The back-side cutout 132 is provided in the shape of a notch on the back side of one end of the flooring material 1.

[0024] The front surface protrusion 131 has a first upper surface inclined portion 133 and a first tip portion 134 .

[0025] The first upper surface inclined portion 133 is the upper surface of the front-side protrusion 131 and is inclined outward toward the back surface of the flooring material 1. When the first solid portion 13 and the second solid portion 14 are solidly connected, the first upper surface inclined portion 133 forms part of the groove of the flooring material 1.

[0026] The first tip 134 is the tip surface of the surface-side protrusion 131 and is perpendicular to the surface of the flooring material 1. The first tip 134 may be curved or may be inclined at approximately ±5° relative to the thickness direction. The length of the first tip 134 in the thickness direction of the flooring material 1 is 0.1 mm or more. As will be described in detail later, because the first tip 134 is perpendicular to the surface of the flooring material 1, the tip of the surface-side protrusion 131 is less likely to be damaged when the first solid portion 13 and the second solid portion 14 are joined. As will be described later, the first tip 134 and the second tip 146 interfere with each other when the flooring material 1 is attached, and it is preferable to make this interference area as small as possible. Therefore, the length of the first tip 134 is 1.0 mm or less, preferably 0.9 mm or less, more preferably 0.8 mm or less, even more preferably 0.7 mm or less, more preferably 0.6 mm or less, and even more preferably 0.5 mm or less.

[0027] The lower surface of the front surface side protrusion 131 is approximately parallel to the width direction and forms a part of the rear surface side cutout 132 .

[0028] The second solid portion 14 has a rear surface side convex portion 141 and a front surface side convex portion 142 .

[0029] The back surface side protrusion 141 is provided so as to protrude outward on the back surface side of the other end of the flooring material 1. The back surface side protrusion 141 protrudes outward further than the front surface side protrusion 142 described below, and its upper surface is approximately parallel to the width direction. When the first solid portion 13 and the second solid portion 14 are joined together, the back surface side protrusion 141 is positioned in the back surface side notch 132 of the first solid portion 13 with the upper surface of the back surface side protrusion 141 in contact with the lower surface of the front surface side protrusion 131.

[0030] The front-side convex portion 142 is provided so as to protrude outward on the front surface side of the other end of the flooring material 1. A recess 143 is formed between the back-side convex portion 141 and the front-side convex portion 142. When the first solid portion 13 and the second solid portion 14 are solidly connected, the front-side protrusion 131 of the first solid portion 13 is fitted into the recess 143.

[0031] The front surface convex portion 142 has a lower surface inclined portion 144 , a second upper surface inclined portion 145 , and a second tip portion 146 .

[0032] The lower surface inclined portion 144 is the lower surface of the front surface convex portion 142 and is inclined outward toward the front surface of the flooring material 1. The inclination angle of the lower surface inclined portion 144 with respect to the width direction is approximately the same as the inclination angle of the first upper surface inclined portion 133 with respect to the width direction. The lower surface inclined portion 144 forms a recess 143 together with the upper surface of the back surface convex portion 141. When the first solid portion 13 and the second solid portion 14 are solidly connected, the lower surface inclined portion 144 contacts the first upper surface inclined portion 133 of the front surface protrusion 131, and the upper surface of the back surface convex portion 141 contacts the lower surface of the front surface protrusion 131. The lower surface inclined portion 144 may be a surface parallel to the width direction.

[0033] The second upper surface inclined portion 145 is the upper surface of the front surface convex portion 142 and is inclined outward toward the back surface of the flooring material 1. When the first solid portion 13 and the second solid portion 14 are solidly connected, the second upper surface inclined portion 145 forms a groove in the flooring material 1 together with the first upper surface inclined portion 133 and the second tip portion 146 described below.

[0034] The second tip 146 is the tip surface of the surface-side convex portion 142 and is perpendicular to the surface of the flooring material 1. The second tip 146 may be a curved surface or a surface inclined by approximately ±5° relative to the thickness direction. The length of the second tip 146 in the thickness direction of the flooring material 1 is 0.1 mm or more. Because the second tip 146 is perpendicular to the surface of the flooring material 1, the tip of the surface-side convex portion 142 is less likely to be damaged when the first solid portion 13 and the second solid portion 14 are joined. As will be described later, the first tip 134 and the second tip 146 interfere with each other when the flooring material 1 is attached, and it is preferable to make this interference area as small as possible. Furthermore, by shortening the length of the second tip 146, the step of the groove in the flooring material formed by the second upper surface inclined portion 145, the first upper surface inclined portion 133, and the second tip 146 can be reduced, improving the design of the floor. Therefore, the length of second tip portion 146 is 1.0 mm or less, preferably 0.9 mm or less, more preferably 0.8 mm or less, even more preferably 0.7 mm or less, more preferably 0.6 mm or less, and more preferably 0.5 mm or less.

[0035] Here, when the first solid portion 13 and the second solid portion 14 are solidly connected, the distance in the width direction between the first tip 134 and the second tip 146 is referred to as the solid overlapping margin W. FIG. 4 is a diagram for explaining the solid overlapping margin W. The flooring material 1 is preferably configured so that the solid overlapping margin W is 0.1 mm to 0.9 mm. By configuring it in this manner, the first solid portion 13 and the second solid portion 14 can be solidly connected without destroying the first solid portion 13 and the second solid portion 14. Furthermore, when the first solid portion 13 and the second solid portion 14 are solidly connected, the front-side protrusion 131 of the first solid portion 13 fitted into the recess 143 of the second solid portion 14 can be prevented from slipping out of the recess 143. If the engaging margin W is large, it becomes difficult to fit the surface-side protrusion 131 of the first solid portion 13 into the recess 143 of the second solid portion 14, and if it is small, it becomes easy for the surface-side protrusion 131 of the first solid portion 13 to come out of the recess 143 of the second solid portion 14. Therefore, the engaging margin W is preferably 0.1 mm or more, more preferably 0.2 mm or more, and even more preferably 0.3 mm or more. Moreover, the engaging margin W is preferably 0.9 mm or less, more preferably 0.8 mm or less, and even more preferably 0.7 mm or less.

[0036] The front surface convex portion 142 does not have to have the second upper surface inclined portion 145. In other words, as shown in Figure 5, the second tip portion 146 of the front surface convex portion 142 may extend to the surface of the flooring material 1. Figure 5 is a cross-sectional view of the flooring material 1 showing another example of the front surface convex portion 142. In this case, the groove in the flooring material 1 is formed by the first upper surface inclined portion 133 and the second tip portion 146.

[0037] Figure 6 is a diagram illustrating a method for installing a new flooring material 1C between two flooring materials 1A and 1B. Figure 6(A) shows the state before installation, and Figure 6(B) shows the state after installation.

[0038] When installing a new flooring material 1C, the flooring material 1C is tilted and the rear-side convex portion 141 of the second solid portion 14 of the flooring material 1C is inserted into the rear-side notch 132 of the first solid portion 13 of the flooring material 1A. At this time, the front-side protrusion 131 of the first solid portion 13 of the flooring material 1C comes into contact with the front-side convex portion 142 of the second solid portion 14 of the flooring material 1B. In this state, by hitting the surface of the first solid portion 13 of the flooring material 1C with a tool with a cushioning material (e.g., a rubber hammer) or by pushing it in with a hand in the direction shown by the arrow in Figure 6(A), the flooring material 1C momentarily bends, and the front-side protrusion 131 of the flooring material 1C overcomes the front-side convex portion 142 of the flooring material 1B and fits into the recess 143 of the flooring material 1B. Furthermore, the rear surface convex portion 141 of the flooring material 1C fits into the rear surface notch portion 132 of the first solid portion 13 of the flooring material 1A, and the front surface protrusion portion 131 of the flooring material 1A fits into the recess portion 143 of the flooring material 1C. As a result, the flooring material 1C is fitted between the flooring materials 1A and 1B, as shown in FIG. 6(B).

[0039] When the surface-side protrusion 131 of flooring material 1C climbs over the surface-side convex portion 142 of flooring material 1B, the first tip 134 of flooring material 1C and the second tip 146 of flooring material 1B are perpendicular to the surface and therefore do not interfere with each other. Therefore, the tips of the surface-side protrusion 131 of flooring material 1C and the surface-side convex portion 142 of flooring material 1B are not damaged. The longer the lengths of the first tip 134 and second tip 146 of flooring material 1, the greater the strength, preventing damage to the actual parts. Meanwhile, shortening the lengths of the first tip 134 and second tip 146 of flooring material 1 reduces the interference area, making it easier to fit flooring material 1C between flooring materials 1A and 1B. For this reason, as described above, the length of each of the first tip portion 134 and the second tip portion 146 has a lower limit of 0.1 mm or more and an upper limit of 1.0 mm or less, preferably 0.9 mm or less, more preferably 0.8 mm or less, even more preferably 0.7 mm or less, more preferably 0.6 mm or less, and more preferably 0.5 mm or less.

[0040] 6(B), when the first solid portion 13 and the second solid portion 14 are solidly joined, the front-side protrusion 131 of the first solid portion 13 is sandwiched between the back-side protrusion 141 and the front-side protrusion 142 of the second solid portion 14. This prevents the first solid portion 13 from lifting off the second solid portion 14, which could cause the flooring material 1 to warp. Furthermore, when the flooring material 1C is bonded with an adhesive, the movement of the flooring material 1C is suppressed by the solid bond between the adjacent flooring materials 1A and 1B, eliminating the need for temporary fixing means (such as weights) for the flooring material 1C until the adhesive hardens. Considering the need to replace the same portion multiple times, it is preferable to use a modified silicone adhesive, which is less likely to damage the substrate when removed.

[0041] (How to replace some flooring materials) Next, we will explain how to replace a portion of the flooring. First, the material to be removed must be removed from the existing floor. There are no particular restrictions on the method used, but for example, a cutter or other cutting device can be used to make an incision in the material to be replaced. By attaching a transport suction cup to the surface of the material to be replaced and then moving the transport suction cup upward in this state, it is possible to peel off only the material to be replaced, starting from the incision in the material to be replaced, without damaging the other flooring already installed.

[0042] Next, after removing the flooring to be replaced, any adhesive or other residue remains on the top surface of the base material, which is removed with a scraper or similar tool, the base is smoothed, and then adhesive is applied to the surface of the base. This base treatment is performed to improve the adhesion of the new flooring. In this way, the new flooring is fitted into the space left by removing the flooring, including the flooring to be replaced, and then installed using the method shown in Figure 6.

[0043] (Example) Below, a test was conducted to confirm that the flooring material of the present invention can be replaced without destroying the actual part. To conduct the test, flooring material A was prepared. The length of the first tip 134 in the thickness direction of the flooring material 1 (hereinafter referred to as dimension L1) was 0.48 mm, the length of the second tip 146 in the thickness direction of the flooring material 1 (hereinafter referred to as dimension L2) was 0.38 mm, and the actual overlapping margin W was 0.35 mm. Flooring material B was prepared. The dimensions L1 was 0.15 mm, L2 was 0.11 mm, and the actual overlapping margin W was 0.71 mm. Flooring material C was prepared. The total thickness of each flooring material was 3.0 mm. A replacement test was conducted using these flooring materials. Those whose actual part was not destroyed were evaluated as ◯, and those whose actual part was destroyed were evaluated as ×. Furthermore, the evaluation was made with a good result when the surface-side protrusion 131 of the first solid portion 13 did not come out of the recess 143 of the second solid portion 14, and with an x ​​when the surface-side protrusion 131 of the first solid portion 13 came out of the recess 143 of the second solid portion 14. The above results are shown in Table 1.

[0044] [Table 1]

[0045] As shown in flooring material C in Table 1, if the second tip 146 of the second solid portion 14 is not perpendicular to the surface of the flooring material 1, the solid portion will be destroyed. Therefore, by having the first tip 134 of the first solid portion 13 and the second tip 146 of the second solid portion 14 each have a surface perpendicular to the surface of the flooring material 1, the flooring material can be replaced without destroying the solid portion. [Explanation of symbols]

[0046] 1, 1A, 1B, 1C: Flooring 10: Base material 11: Cosmetic materials 12: Backing material 13:First real part 14:Second real part 131: Surface side protrusion 132: Back side notch 133: First upper inclined part 134:First tip 141: Back side convex part 142: Surface side convex part 143: Recess 144: Bottom inclined part 145:Second upper inclined part 146:Second tip

Claims

1. A flooring material that extends in one direction, In a cross section perpendicular to the one direction, when the real part provided at one end of the floor material is defined as a first real part and the real part provided at the other end of the floor material is defined as a second real part, The first real part is a surface-side protrusion provided on a surface side of the one end so as to protrude outward; a rear surface side notch provided in a notch shape on a rear surface side of the one end; and the front surface-side protrusion has a first upper surface inclined portion whose upper surface is inclined outward toward the back surface side, and a first tip portion perpendicular to the front surface, The second real part is a rear-side convex portion that protrudes outward on the rear side of the other end and has an upper surface that is configured as a flat surface; a front-side convex portion provided on the front side of the other end so as to protrude outward and forming a concave portion between the front-side convex portion and the back-side convex portion; and the front surface-side convex portion has a second tip portion perpendicular to the front surface, In the cross section, the length of the first tip portion and the second tip portion in the thickness direction of the flooring material is 0.1 mm or more, The surface-side protrusion is fitted into the recess of the adjacent flooring material, thereby solidly connecting the first solid portion and the second solid portion. Flooring.

2. 2. The flooring material according to claim 1, wherein the surface-side convex portion has a lower-surface inclined portion whose lower surface is inclined outward toward the surface side.

3. the front surface side convex portion has a second upper surface inclined portion whose upper surface is inclined outwardly toward the back surface side, The flooring material according to claim 1 or claim 2.

4. In a state in which the first real part and the second real part are real-coupled, In the cross section, the distance between the first tip and the second tip in a direction perpendicular to the thickness direction of the flooring material is 0.1 mm or more and 0.9 mm or less; The flooring material according to any one of claims 1 to 3.

5. The total thickness of the flooring material is 1.5 mm or more and 6.0 mm or less, 5. The flooring material according to claim 1.

6. Including decorative materials made of wood veneer, resin sheets, or paper sheets.

6. The flooring material according to any one of claims 1 to 5.

7. The backing material is made of a resin sheet, a moisture-proof sheet, or a wood sheet.

7. The flooring material according to claim 1.

8. Substrates including wood substrates, resin molding substrates, gypsum-based substrates, mineral fiber-based substrates, or substrates composed of a mixture thereof.

8. The flooring material according to any one of claims 1 to 7.

9. A method for attaching a flooring material according to any one of claims 1 to 8, In the case where a first floor material and a second floor material are installed with a gap therebetween, and the first solid portion of the first floor material faces the second solid portion of the second floor material, and a third floor material is attached between the first floor material and the second floor material, applying adhesive to a substrate between the first flooring and the second flooring; A step of inserting the rear side convex portion of the second solid portion of the third floor material, which is in an inclined state such that the second solid portion of the third floor material is lower than the first solid portion of the third floor material, into the rear side notch portion of the first solid portion of the first floor material; Pressing the first solid portion side of the third floor material toward the second solid portion side, so that the surface side protrusion of the first solid portion of the third floor material fits into the recess of the second solid portion of the second floor material; A method for attaching flooring material comprising the steps of:

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