Drainage material

Abstract

We provide a water-repellent material that improves the waterproofing and fire resistance of walls. [Solution] The water drain material 10 comprises a fixing part 11 including an upper fixing part 11a and a lower fixing part 11b extending in the vertical direction, a water drain part 16 including an inclined part 12 extending diagonally downward toward the front from a position below the midpoint in the height direction of the fixing part 11 and a hanging part 13 extending downward from the front end of the inclined part 12, and a folded part 14 extending toward the fixing part 11 from the lower end of the hanging part 13. An elastic sealing material 15 made of a material with excellent water resistance and weather resistance, such as EPDM, is placed at the corner formed by the lower surface of the inclined part 12 and the surface of the lower fixing part 11b. Because the upper fixing part, which has a large height dimension, covers a wide area of ​​the substrate, the waterproofing performance and fire prevention performance are improved. Because it is fixed by the upper fixing part and the lower fixing part, the fixing state becomes strong.

Description

Technical Field

[0001] The present invention relates to a drip material used for a wall surface, and particularly to a drip material disposed in a gap between exterior finishing materials adjacent vertically to each other in a wall surface constructed by vertically installing exterior finishing materials.

Background Art

[0002] In recent years, the ratio of ceramic siding has been increasing as an exterior finishing material used for the outer wall of a detached house. As a construction method of a wall surface using siding, there are known a horizontal installation method in which siding arranged with the longitudinal direction in the vertical direction is arranged horizontally, and a vertical installation method in which siding arranged with the longitudinal direction in the horizontal direction is arranged vertically.

[0003] When constructing a wall surface by the vertical installation method, generally, a gap extending in the horizontal direction serving as a joint is formed between adjacent siding vertically. And, in order to suppress water from entering from this gap to the back side of the siding, conventionally, a drip material as described in, for example, Patent Document 1 is disposed in the gap.

[0004] The drip material described in Patent Document 1 is made of a metal plate, and includes a mounting portion fixed to a base such as a building frame, a water drip portion extending obliquely downward from a substantially middle position in the height direction of the mounting portion, and a hanging portion hanging vertically downward from the tip of the water drip portion. In the construction state, wall finishing materials are arranged vertically above and below the drip material, and the portion above the water drip portion (extension portion) in the mounting portion is located on the back side of the upper wall finishing material, and the portion below the water drip portion in the mounting portion is located on the back side of the lower wall finishing material, and the water drip portion and the hanging portion are configured to cover the upper end side of the lower wall finishing material.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] The flashing material described in Patent Document 1 has a structure that provides a gap between the wall finishing material and the substrate (connecting member), so rain during wind and rain and flames during fire can easily penetrate through the gap (slit) between the upper and lower wall finishing materials, especially to the back side of the upper wall finishing material. Furthermore, the conventional flashing material described in Patent Document 1 has a small height dimension in the upper part of the mounting section and covers a narrow area of ​​the substrate, making it difficult to show sufficient waterproofing and fireproofing performance against water and flames penetrating through the gap.

[0007] This invention was made to solve the above-mentioned problems and aims to provide a water-repellent material that improves the waterproofing and fire-resistant performance of walls. [Means for solving the problem]

[0008] To achieve the above objective, the invention described in claim 1 is a flashing material disposed in a gap between wall surfaces including exterior materials adjacent to each other vertically with a gap in between, and comprises a fixing portion disposed on the back side of the exterior material and extending vertically, and a flashing portion extending diagonally downward toward the front from the fixing portion, wherein the fixing portion includes an upper fixing portion located above the flashing portion and a lower fixing portion that is continuous downward from the upper fixing portion, the height dimension of the upper fixing portion is set to be greater than the height dimension of the lower fixing portion, and the lower end position of the lower fixing portion is set to be located below the lower end of the flashing portion.

[0009] With this configuration, the height of the upper fixing part becomes larger than that of the lower fixing part, resulting in a wider area being covered by the upper fixing part.

[0010] The invention described in claim 2 is a flashing material disposed in a gap between wall surfaces including exterior materials adjacent to each other vertically, and comprises a fixing portion disposed on the back side of the exterior material and extending vertically, and a flashing portion extending diagonally downward toward the front from the fixing portion, wherein the fixing portion includes an upper fixing portion located above the flashing portion and a lower fixing portion that is continuous downward from the upper fixing portion, and the height dimension of the fixing portion is set to be greater than 40 mm.

[0011] With this configuration, the height dimension of the fixing part of the flashing material is set to be greater than a specific value, so the area that the fixing part covers the substrate becomes larger than the predetermined value.

[0012] The invention described in claim 3 is the configuration of the invention described in claim 2, wherein the height dimension of the upper fixing part is set to be greater than the height dimension of the lower fixing part.

[0013] This configuration allows the upper fixing part to cover a wider area of ​​the substrate.

[0014] The invention described in claim 4 is the configuration of the invention described in claim 2, wherein the height dimension of the lower fixing part is set to be greater than the height dimension of the upper fixing part.

[0015] This configuration increases the area over which the lower fixing part covers the substrate.

[0016] The invention described in claim 5 is the configuration of the invention described in claim 1 or claim 2, wherein the height dimension of the upper fixing part is set to 30 mm or more.

[0017] With this configuration, the area covered by the upper fixing part on the substrate will exceed a certain value.

[0018] The invention described in claim 6 is the configuration of the invention described in claim 1 or claim 2, wherein the height dimension of the upper fixing part is set in the range of 40 to 80 mm.

[0019] With such a configuration, the range in which the upper fixing part covers the base becomes appropriate.

[0020] The invention according to claim 7 is the invention according to claim 1 or claim 2, wherein the height dimension of the lower fixing part is set to 30 mm or more.

[0021] With such a configuration, the area in which the lower fixing part covers the base becomes a certain value or more.

[0022] The invention according to claim 8 is the invention according to claim 1 or claim 2, wherein in the state where the wall surface is constructed, the upper fixing part can be fixed to the base on the back side of the upper exterior material, and the lower fixing part can be fixed to the base on the back side of the lower exterior material.

[0023] With such a configuration, the upper fixing part and the lower fixing part can be fixed to the base on the back side of the exterior material.

[0024] The invention according to claim 9 is the invention according to claim 1 or claim 2, wherein an elastic sealing material is arranged at the corner formed by the lower surface of the drainage part and the surface of the lower fixing part.

[0025] With such a configuration, when the upper end surface of the lower exterior material is abutted against the elastic sealing material and elastically deformed during the construction of the wall surface, the upper surface side of the elastic sealing material is supported by the drainage part, and the back side is supported by the lower fixing part, so that the elastic sealing material does not contact the base.

[0026] The invention according to claim 10 is the invention according to claim 9, wherein the elastic sealing material abuts against the upper end surface and the back surface of the lower exterior material in an elastically compressed state during the construction of the wall surface.

[0027] With such a configuration, in the state where the wall surface is constructed, the elastic sealing material elastically presses against the upper end surface and the back surface of the lower exterior material.

[0028] The invention described in claim 11 is the configuration of the invention described in claim 1 or claim 2, further comprising a folded portion extending from the lower end of the water drain portion toward the fixing portion, wherein the folded portion is formed so that its tip is close to the surface of the exterior material when the wall surface is constructed. Here, close includes contact.

[0029] With this configuration, the gap between the tip of the folded-over section and the surface of the exterior material becomes narrower or disappears altogether. [Effects of the Invention]

[0030] As explained above, the invention described in claim 1 has a wider coverage area of ​​the upper fixing part, which increases the area over which water during wind and rain or flames during a fire can be prevented from immediately coming into contact with the substrate when they penetrate the back side of the upper exterior material, thereby improving the waterproofing and fireproofing performance of the wall surface.

[0031] The invention described in claim 2 allows the area covered by the fixing part to be larger than a predetermined value, so when water from wind and rain or flames from a fire penetrate to the back side of the upper exterior material, the area that can be prevented from immediately coming into contact with the substrate is greater than a certain amount, thereby improving the waterproof and fireproof performance of the wall surface.

[0032] In addition to the effects of the invention described in claim 2, the invention described in claim 3 has a wider coverage area of ​​the substrate by the upper fixing part, which widens the area over which water and flames can be prevented from immediately coming into contact with the substrate on the back side of the upper exterior material, thereby improving the waterproofing and fireproofing performance of the wall surface.

[0033] In addition to the effects of the invention described in claim 2, the invention described in claim 4 has a wider coverage area of ​​the substrate by the lower fixing part, which widens the area over which water and flames can be prevented from immediately coming into contact with the substrate on the back side of the lower exterior material, thereby improving the waterproofing and fireproofing performance of the wall surface.

[0034] In addition to the effects of the invention described in claim 1 or claim 2, the invention described in claim 5 has a certain area of ​​coverage of the substrate by the upper fixing part, so the area that can prevent water and flames from immediately coming into contact with the substrate on the back side of the upper exterior material is also certain, thus improving the waterproof and fireproof performance of the wall surface.

[0035] The invention described in claim 6, in addition to the effects of the invention described in claim 1 or claim 2, allows for an appropriate coverage of the substrate by the upper fixing part, thereby improving the waterproofing and fire-resistant performance of the wall surface without excessively increasing costs. If the height dimension of the upper fixing part is less than 40 mm, the waterproofing and fire-resistant performance of the substrate may not reach the expected value. If the height dimension of the upper fixing part exceeds 80 mm, the effect may not justify the increase in cost and weight.

[0036] In addition to the effects of the invention described in claim 1 or claim 2, the invention described in claim 7 has a certain minimum coverage area of ​​the lower fixing portion, which prevents water and flames from immediately coming into contact with the substrate on the back of the lower exterior material. This provides an additional minimum coverage area, thereby improving the waterproof and fireproof performance of the wall surface.

[0037] The invention described in claim 8, in addition to the effects of the invention described in claim 1 or claim 2, allows the upper and lower fixing parts to be fixed to the substrate on the back side of the exterior material, thereby making it possible to strengthen the fixing state of the flashing material. Furthermore, the fixing points of the upper and lower fixing parts to the substrate become less visible, so there is no risk of impairing the aesthetic appearance.

[0038] In addition to the effects of the invention described in claim 1 or claim 2, the invention described in claim 9 has the advantage that, when the elastic sealant is installed on the wall surface, it does not come into contact with the substrate, so the compressed state of the elastic sealant is not affected by the surface condition of the substrate and remains stable, thus ensuring reliable watertightness between the flashing and the lower exterior material.

[0039] In addition to the effects of the invention described in claim 9, the invention described in claim 10 improves the water-stopping performance between the flashing material and the lower exterior material because, when the wall surface is constructed, the elastic sealing material is elastically pressed against the upper end surface and back surface of the lower exterior material.

[0040] In addition to the effects of the invention described in claim 1 or claim 2, the invention described in claim 11 can suppress water from entering the interior of the flashing material from below because the gap between the tip of the folded portion and the surface of the exterior material is narrowed or eliminated. [Brief explanation of the drawing]

[0041] [Figure 1] This is a perspective view of a drainage material according to one embodiment of the present invention, with the intermediate parts omitted. [Figure 2] (A) is a front view of the flashing material shown in Figure 1, and (B) is a right side view of the same flashing material. [Figure 3] Figure 1 is an enlarged right side view of the drainage material. [Figure 4] Figure 1 shows the construction procedure for a wall surface using the flashing material shown, and is a cross-sectional view showing the structure of the substrate. [Figure 5] Figure 1 shows the construction procedure for a wall surface using a flashing material, and is a cross-sectional view showing the flashing material attached to the substrate. [Figure 6] Figure 1 shows the construction procedure for a wall surface using a flashing material, and is a cross-sectional view showing the situation with the exterior cladding material placed below the flashing material. [Figure 7] Figure 1 shows the construction procedure for a wall surface using a flashing material, and is a cross-sectional view showing the wall surface constructed by placing the exterior material above the flashing material. [Figure 8] This is a cross-sectional view showing an enlarged view of the main part of the wall surface shown in Figure 7. [Figure 9] This is a right side view showing a different embodiment of the drainage material according to the present invention. [Figure 10] This drawing shows different configurations of the drainage section. [Modes for carrying out the invention]

[0042] Figures 1 to 3 show a water drainage material according to one embodiment of the present invention. Figure 1 is a perspective view with the middle section omitted, Figure 2(A) is a front view, (B) is a left side view, and Figure 3 is an enlarged right side view.

[0043] Referring to Figures 1 and 2, the water drain material 10 in this example is formed by bending a metal sheet, such as a galvalume steel sheet (registered trademark), and has a long shape. Its structure includes a fixing portion 11 extending in the vertical direction, a water drain portion 16 extending diagonally downward toward the front from a position below the midpoint in the height direction of the fixing portion 11, and a folded portion 14 extending toward the fixing portion 11 from the lower end of the water drain portion 16.

[0044] The fixing portion 11 includes an upper fixing portion 11a located above the drainage portion 16 and a lower fixing portion 11b that extends downward from the upper fixing portion 11a. The height dimension of the upper fixing portion 11a is set to be greater than the height dimension of the lower fixing portion 11b, and the position of the lower end 11c of the lower fixing portion 11b is set to be below the lower end of the drainage portion 16. Furthermore, the fixing portion 11 is configured as two layers of the upper fixing portion 11a by folding back a metal plate at its upper end.

[0045] In this example, the water drainage section 16 includes an inclined section 12 extending diagonally downward and forward from the fixing section 11, and a hanging section 13 extending downward from the front end of the inclined section 12. The hanging section 13 is formed to be substantially parallel to the fixing section 11. The folded-over section 14 is formed to approach the inclined section 12 as it moves from the hanging section 13 towards the fixing section 11, and is set to a length such that, in the construction state of the wall surface described later, the tip 14a of the folded-over section 14 is close to or in contact with the surface of the exterior material. Furthermore, in this example, an elastic sealant 15 made of a material with excellent water resistance and weather resistance, such as EPDM, is placed at the corner formed by the lower surface of the water drainage section 16 (inclined section 12) and the surface of the lower fixing section 11b.

[0046] Referring to Figure 3, the water drain material 10 in this example is characterized in that the height dimension of the fixing part 11, that is, the sum of the height dimension L1 of the upper fixing part 11a and the height dimension L2 of the lower fixing part 11b, L1+L2, is set to be greater than 40 mm, and the height dimension L1 of the upper fixing part 11a is formed to be greater than the height dimension L2 of the lower fixing part 11b. In this case, the dimensions and sizes of each part are as follows, for example. The height dimension L1 of the upper fixing part 11a is greater than 20 mm, preferably 30 mm or more, and more preferably in the range of L1 = 40 to 80 mm, taking fire resistance into consideration. The height dimension L2 of the lower fixing part 11b is 10 mm or more in order to enable fixing to the substrate, and preferably in the range of L2 = 10 to 50 mm in order to back up the entire back surface of the elastic sealing material 15. Therefore, the total height dimension (L1 + L2) of the fixing part 11 is preferably in the range of 50 to 130 mm.

[0047] The length dimension L3 of the inclined portion 12 shall be 15 mm or more, preferably in the range of L3 = 15 to 80 mm, taking into consideration the thickness dimension of the exterior material. The length dimension L4 of the hanging portion 13 shall be 10 mm or more, preferably in the range of L4 = 10 to 50 mm, taking into consideration the aesthetic appearance. The length dimension L5 of the folded portion 14 shall be 5 mm or more, taking into consideration watertightness.

[0048] In this example, the angle α formed by the upper fixed part 11a and the inclined part 12, and the angle β formed by the inclined part 12 and the hanging part 13 are set to be equal, and their magnitudes α and β are in the range of α=β=90 to 150 degrees, taking drainage into consideration. In addition, in this example, the angle γ formed by the hanging part 13 and the folded part 14 is set to be smaller than the angle β formed by the inclined part 12 and the hanging part 13, and its magnitude is in the range of γ=0 to 90 degrees.

[0049] Furthermore, in the water drain material 10 shown in Figure 3, the following values ​​are used as the dimensions mentioned above: L1=60mm, L2=30mm, L3=30mm, L4=16.5mm, L5=11mm, α=β=100 degrees, γ=70 degrees.

[0050] However, the numerical values ​​and ranges exemplified above are by no means limiting, and do not preclude setting values ​​outside of these ranges depending on the circumstances of implementation.

[0051] Figures 4 to 7 illustrate the construction procedure for a wall surface using the flashing material shown in Figure 1. Figure 4 is a cross-sectional view showing the structure of the substrate, Figure 5 is a cross-sectional view showing the flashing material attached to the substrate, Figure 6 is a cross-sectional view showing the exterior cladding placed below the flashing material, and Figure 7 is a cross-sectional view showing the wall surface constructed with the exterior cladding placed above the flashing material. Figure 8 is a magnified cross-sectional view showing the main part of the wall surface shown in Figure 7.

[0052] In this example, the flashing material 10 is placed in the horizontally extending gaps that form joints between adjacent exterior materials when installing exterior materials such as siding vertically on a wall surface, and functions as a so-called intermediate flashing. The general procedure for constructing the wall is as follows:

[0053] Referring to Figure 4, first, the base 50 for constructing the wall surface is prepared. The base 50 consists of structural plywood or other facing material 52 attached to the columns 51 that form the frame, a breathable waterproof sheet 53 attached to its surface, and then furring strips 54a and 54b fixed to it. In this example, since the wall surface is constructed using a vertical siding method, the furring strips 54a and 54b are horizontal furring strips. Also, compared to the width dimension of furring strips normally used, the height dimension (L1 + L2) of the fixing part 11 of the flashing material 10 in this example is larger, so a structure is adopted in which the two furring strips 54a and 54b are attached side by side vertically.

[0054] Referring to Figure 5, the flashing material 10 is then attached to the base 50. In this example, the upper fixing portion 11a of the flashing material 10 is fixed to the upper furring strip 54a with nails 60 or screws, and the lower fixing portion 11b is fixed to the lower furring strip 54b with nails 60 or screws. At this time, since the lower end 11c of the lower fixing portion 11b is set lower than the lower end 13a of the hanging portion 13, the lower fixing portion 11b can be visually inspected from the front. Therefore, the work of driving in nails 60 to fix the lower fixing portion 11b to the furring strip 54b becomes easier, resulting in good workability.

[0055] Referring to Figure 6, the exterior material S2, such as siding, is then placed below the flashing material 10 fixed to the substrate 50. The exterior material S2 is held on the surface of the substrate 50 using locking fittings (not shown) provided on the substrate 50. At this time, the upper and back surfaces of the exterior material S2 compress and elastically deform the elastic sealing material 15 placed below the inclined portion 12 of the flashing material 10.

[0056] Referring to Figure 7, the exterior cladding material S1 is then placed above the flashing material 10 and, as with the lower side, is secured to the surface of the substrate 50 using fastening fittings (not shown) provided on the substrate 50. This constructs a wall surface W in which the exterior cladding materials S1 and S2 are installed vertically and the flashing material 10 is placed in the gap G between them. In this example, a slight gap is provided between the exterior cladding materials S1 and S2 and the substrate 50, and ventilation of the wall surface W is ensured by making the upper and lower parts of the furring strips 54a and 54b into ventilation passages.

[0057] Referring to Figure 8, in the wall W constructed as described above, the flashing material 10 in this example is fixed to the substrate 50 by both the upper fixing part 11a and the lower fixing part 11b, resulting in a strong fixation. This has the advantage that even when subjected to strong winds or external forces, the fixing part 11 is less likely to shift position, thus reducing the risk of degrading the waterproofing and fire-resistant performance of the wall W. Furthermore, since the flashing material 10 in this example is configured so that the upper fixing part 11a and the lower fixing part 11b can be fixed to the substrate 50 on the back side of the exterior materials S1 and S2, the fastening points of the fixing part 11 to the substrate 50 are hidden from view when the wall W is constructed, thus not impairing the aesthetic appearance of the wall W.

[0058] The fixing part 11 covers the substrate over a range that includes the lower fixing part 11b, whose lower end 11c is set lower than the lower end 13a of the hanging part 13, and the upper fixing part 11a, which is set to be taller than the lower fixing part 11b. Therefore, when water from wind and rain or flames from a fire enter through the gap G between the upper and lower exterior materials S1 and S2, it is possible to prevent them from immediately coming into contact with the substrate 50 over a relatively wide area. This improves the waterproof and fire-resistant performance of the wall surface W. In addition, in this example, the height dimension of the upper fixing part 11a is increased so that the area covering the substrate 50 is wider than the area covering the substrate 50 by the lower fixing part 11b. In particular, in the event of a fire, it is possible to widen the area over which flames rising on the back side of the upper exterior material S1 can be prevented from immediately coming into contact with the substrate, contributing to the improvement of the fire-resistant performance of the wall surface W. In this example, the height dimension L1 of the upper fixing part 11a (see Figure 3) is set to 60 mm, but it is acceptable to set it to 20 mm or more, preferably in the range of 40 to 80 mm. The reason for this is that if the height dimension L1 of the upper fixing part 11a is less than 20 mm, the waterproofing and fire-resistant performance for the substrate 50 may be insufficient, and if the height dimension L1 of the upper fixing part 11a exceeds 80 mm, the effect may not be commensurate with the increase in cost and weight. On the other hand, if the height dimension L1 of the upper fixing part 11a is set to the range of 40 to 80 mm, effective waterproofing and fire-resistant performance can be provided to the substrate 50 on the back side of the upper exterior material S1 without excessively increasing cost and weight.

[0059] Furthermore, in this example, when the wall surface W is constructed, the tip 14a of the folded portion 14 is positioned close to the surface of the lower exterior material S2, and the gap d between the two is narrowed. This prevents water from entering the interior of the flashing material 10 when exposed to wind and rain from below, making it difficult for water to reach the substrate 50. In addition, in this example, the folded portion 14 is formed to approach the inclined portion 12 toward the tip 14a, but the shape of the folded portion 14 is not limited to this.

[0060] In this example, when the flashing material 10 is installed on the wall surface W, the elastic sealing material 15 placed at the corner formed by the lower surface of the inclined portion 12 and the surface of the lower fixing portion 11b is elastically compressed and deformed by the upper end surface 21 and back surface 22 of the lower exterior material S2, causing it to elastically press against the upper end surface 21 and back surface 22. As a result, the area from the upper end surface 21 to the back surface 22 of the lower exterior material S2 is sealed watertight, ensuring a waterproof state between the flashing material 10 and the lower exterior material S2. Furthermore, since the waterproof structure is formed by the elastic sealing material 15, the work of filling with sealant can be eliminated. Moreover, the elastic sealing material 15 is supported on the upper side by the inclined portion 12 and on the back side by the lower fixing portion 11b, and is structured so that it does not come into contact with the substrate 50. Therefore, when the elastic sealing material 15 is compressed by the exterior material S2, it is not affected by the surface condition of the substrate, which stabilizes the compressed state of the elastic sealing material 15 and ensures a watertight seal between the flashing material 10 and the lower exterior material S2.

[0061] Figure 9 is a right side view showing a different embodiment of the flashing material according to the present invention. The basic structure of the flashing material shown in this figure is the same as that of the flashing material shown in Figure 1, so here we will mainly explain the differences.

[0062] Referring to Figure 9, in this example, the flashing material 20 has a fixed section 11 in which the height dimension L2 of the lower fixed section 11b is set to be greater than the height dimension L1 of the upper fixed section 11a. The fact that the total height dimension (L1 + L2) of the fixed section 11 is set to be greater than 40 mm is common to the embodiment described above, but in this example, the height dimension L1 of the upper fixed section 11a is set to 10 mm or more, preferably in the range of 20 to 30 mm, and the height dimension L2 of the lower fixed section 11b is set to be greater than L1, 30 mm or more, preferably in the range of 30 to 50 mm. As a result, the flashing material 20 in this example has the effect of improving the waterproofing and fireproofing performance of the lower fixed section because it covers a wider area of ​​the substrate on the back side of the lower exterior material. In addition, the work of fixing the lower fixed section 11b to the substrate becomes easier. If the height dimension L2 of the lower fixing part 11b is less than 30 mm, the area covered by the substrate will be reduced, which may decrease the waterproofing and fire-resistant performance, and may also impair the ease of fixing the lower fixing part 11b to the substrate.

[0063] In this example, the flashing material 20 is formed in such a way that the folded portion 14 overlaps with the hanging portion 13 by folding it back at the lower end 13a of the hanging portion 13 so that it is parallel to the hanging portion 13. This configuration makes it possible to accommodate thick exterior materials even if the length of the inclined portion 12 is short.

[0064] Figure 10 is a diagram showing different configurations of the water drainage portion in a water drainage material.

[0065] In the above embodiment, the water-draining portion 16 of the water-draining material 10 is composed of an inclined portion 12 and a hanging portion 13, but it is not limited to this. For example, as shown in Figure 10(A), the water-draining portion 16 may consist of an inclined portion 12 and a steeply inclined portion 17 having a greater gradient than the inclined portion 12. Also, as shown in Figure 10(B), the water-draining portion 16 may be formed in the shape of a curved plate. Furthermore, as shown in Figure 10(C), the water-draining portion 16 may consist of a double-layered inclined portion 12 and hanging portion 13 by folding a metal plate.

[0066] As explained above, the water drainage material according to the present invention only needs to have a total height dimension of the fixing part that exceeds a predetermined value, and the height dimension of either the upper fixing part or the lower fixing part may be larger. Furthermore, since the upper fixing part and the lower fixing part can be fixed to the substrate if they have a height dimension of 10 mm or more, for example, if the height dimension of the lower fixing part is set to 10 mm, the height dimension of the upper fixing part should be set to be greater than 30 mm. Conversely, if the height dimension of the upper fixing part is set to 10 mm, the height dimension of the lower fixing part should be set to be greater than 30 mm.

[0067] In the embodiment shown in Figure 1, the drain material was formed by folding the metal plate at the upper end of the fixing part, but the drain material may also be formed by folding the metal plate at the lower end of the fixing part. Alternatively, instead of bending the metal plate, the material may be formed by drawing or extruding the metal material, and the forming method is not limited. Furthermore, in addition to metal materials, resin materials or composite materials may also be used for manufacturing.

[0068] Furthermore, in the embodiment shown in Figure 1, the height dimension of the upper fixing part is set to be larger than that of the lower fixing part, but the height dimensions of the upper fixing part and the lower fixing part may be made equal.

[0069] Furthermore, in the embodiment shown in Figure 1, the hanging portion is formed substantially parallel to the fixing portion, but it does not necessarily have to be parallel.

[0070] Furthermore, in the embodiments shown in Figures 5 to 8, both the upper and lower fixing parts are fixed to the substrate, but either the upper or lower fixing part may be fixed to the substrate.

[0071] Furthermore, in the embodiment shown in Figure 8, a gap is provided between the tip of the folded portion and the surface of the exterior material when the wall surface is installed, but the tip of the folded portion may be in contact with the surface of the exterior material. Also, the folded portion may be formed parallel to the inclined portion, or the tip may be formed away from the inclined portion. Moreover, the flashing material may not have a folded portion.

[0072] Furthermore, in the embodiment shown in Figure 8, the flashing material was attached to the furring strips at its fixing point, but it may also be attached to the structural plywood or other structural components. The base material may be wood, or it may be partially made of metal.

[0073] Furthermore, in the embodiments shown in Figures 1 and 9, the elastic sealing material is placed at the corner formed by the inclined portion and the lower fixing portion, but the elastic sealing material can be placed anywhere on the lower surface of the inclined portion. Moreover, the elastic sealing material may be omitted, and the gap between the flashing material and the exterior material may be filled with sealing material. [Explanation of symbols]

[0074] 10, 20... drainage material 11...Fixed part 11a…Upper fixed part 11b…lower fixed part 11c…lower end 12…Slope part 13…Drooping part 13a…lower end 14...Folded section 14a...Tip 15…Elastic sealing material 16...Drainage section 21…Top end surface 22…Back 50…Primer 51... Pillar 52… Surface material 53… Breathable waterproof sheet 54a... Furring strips 54b... Furring strips 60...Nail G...Gap S1... Exterior materials S2…Exterior material W...wall d...gap In each figure, the same reference numeral indicates the same or corresponding part.

Claims

1. A flashing material placed in the gap between exterior materials that are adjacent to each other vertically on either side of the gap, A fixing portion is positioned on the back side of the exterior material and extends vertically, It comprises a water drainage portion that extends diagonally downward toward the front from the aforementioned fixed portion, The fixing portion includes an upper fixing portion located above the drainage portion and a lower fixing portion that extends downward from the upper fixing portion. The height dimension of the upper fixing part is set to be greater than the height dimension of the lower fixing part. The lower fixing portion is set such that its lower end position is located below the lower end of the water drain portion. Drainage material.

2. A flashing material placed in the gap between exterior materials that are adjacent to each other vertically on either side of the gap, A fixing portion is positioned on the back side of the exterior material and extends vertically, It comprises a water drainage portion that extends diagonally downward toward the front from the aforementioned fixed portion, The fixing portion includes an upper fixing portion located above the drainage portion and a lower fixing portion that extends downward from the upper fixing portion. The aforementioned fixing part has a height dimension set to be greater than 40 mm. Drainage material.

3. The drainage material according to claim 2, wherein the height dimension of the upper fixing part is set to be greater than the height dimension of the lower fixing part.

4. The drainage material according to claim 2, wherein the height dimension of the lower fixing part is set to be greater than the height dimension of the upper fixing part.

5. The drain material according to claim 1 or claim 2, wherein the height dimension of the upper fixing part is set to 30 mm or more.

6. The drainage material according to claim 1 or claim 2, wherein the height dimension of the upper fixing part is set in the range of 40 to 80 mm.

7. The drainage material according to claim 1 or claim 2, wherein the height dimension of the lower fixing part is set to 30 mm or more.

8. The flashing material according to claim 1 or claim 2, wherein, in the state in which the wall surface is constructed, the upper fixing portion can be fixed to the substrate on the back side of the upper exterior material, and the lower fixing portion can be fixed to the substrate on the back side of the lower exterior material.

9. The water drainage material according to claim 1 or claim 2, wherein an elastic sealing material is disposed in the corner formed by the lower surface of the water drainage portion and the surface of the lower fixing portion.

10. The flashing material according to claim 9, wherein the elastic sealing material comes into contact with the upper end surface and back surface of the lower exterior material in an elastically compressed state during the construction of the wall surface.

11. The drain portion further comprises a folded portion extending from the lower end toward the fixing portion, The flashing material according to claim 1 or claim 2, wherein the folded portion is formed so that its tip is close to the surface of the exterior material when the wall surface is constructed.

Images