JP2017066760A - Exterior wall structure - Google Patents

Abstract

A sealing material is made inconspicuous.
In an outer wall structure in which a sealing material is disposed at a joint between a pair of outer wall members (1) and (1) arranged in parallel, the width of an outer side end portion of the joint is 2 mm or more and 7 mm or less, and the sealing The material 2 is in contact with the pair of outer wall materials, and the surface thereof is located on the inner side of the surface of the outer wall material.
[Selection] Figure 2

Description

  The present invention relates to an outer wall structure using an outer wall material.

  When configuring the outer wall by stretching a large number of panel type outer wall materials, between the outer wall materials arranged vertically, by overlapping the lower edge of the upper outer wall material on the outer surface side of the upper edge of the lower outer wall material, or By interposing a sealing material between the opposing surfaces of both, rain water infiltration behind the outer wall material is prevented.

  On the other hand, as shown in Patent Document 1, the portion between the left and right outer wall materials (vertical joint) is usually filled with a sealing material (caulking material) at an interval of about 10 mm. To be done.

Utility Model Registration No. 2553618

  In this case, the vertical joint is conspicuous. In the thing shown in patent document 1, since the surface of the sealing material protrudes to the outdoor side rather than the surface of an outer wall material, it is still more conspicuous. For this reason, the vertical joint is made inconspicuous by using a sealing material colored in substantially the same color as the surface coating of the outer wall material.

  By the way, recent exterior wall materials have increased surface coating variations due to the development of coating technology, so in order to make the vertical joints inconspicuous, it is not necessary to prepare seals of various colors according to the surface coating variations of the outer wall materials It must not be.

  This invention is made | formed in view of the said problem, and it makes it a subject to provide the outer wall structure which can make a sealing material inconspicuous, without increasing the variation of the color of a sealing material.

  The outer wall structure according to the present invention is an outer wall structure in which a sealing material is disposed at a joint between a pair of parallel outer wall members, and the width of the outer side end of the joint is 2 mm or more and 7 mm or less, The sealing material is characterized in that it is in contact with the pair of outer wall materials and the surface thereof is located on the inner side of the surface of the outer wall material.

  It is preferable that a groove is formed on the surface of the outer wall material, and the surface of the sealing material is located on the outer side of the bottom surface of the groove.

  Moreover, the said sealing material can use suitably the dry-type sealing material which has elasticity.

  Furthermore, the width of the joint is preferably wider toward the inside.

  In the present invention, the joints between the outer wall materials can be made inconspicuous, and accordingly, the color of the sealing material does not need to be exactly matched to the color of the outer wall material. On the other hand, variations in the color of the sealing material can be reduced.

It is a partial front view of an example of the outer wall structure which concerns on embodiment of this invention. The cross section of an example of the outer wall structure which concerns on embodiment of this invention is shown, A is sectional drawing which shows a construction state, B is sectional drawing which shows the state before construction. It is sectional drawing equivalent to FIG. 2A which shows the other example of embodiment of this invention.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. An outer wall material 1 in the illustrated example is a horizontally long rectangular panel having lattice-shaped concave grooves 10 formed on the surface thereof, and an upper side and a lower side thereof. Is provided with a back solid part on the upper side and a front solid part on the lower side for so-called phased connection. The configurations of the back solid part and the front solid part are not shown here because they are well known. Moreover, the outer wall material 1 may be ceramic-type or metal siding, and the material thereof is not limited.

  The outer wall material 1 covers the outer surface of the building frame by being fastened to the trunk edge (vertical trunk edge) standing on the outer surface of the building frame at a predetermined interval with a fastener. At this time, the upper and lower outer wall materials 1 and 1 are arranged in a watertight manner by superimposing the upper and lower outer wall materials on the surface side of the back solid portion of the upper side of the lower outer wall material 1.

  And between the outer wall materials 1 and 1 lined up on the left and right, a joint is left between them, and the sealing material 2 is arranged on this joint to make it watertight, but in the illustrated example, as the sealing material 2, An elastic dry sealant (joint gasket) is used.

  Here, the width of the joint between the left and right outer wall materials 1 and 1 (the width between the outer side end portions of the outer wall materials 1 and 1) W is 2 to 7 mm, and is located in the joint and is left and right. The sealing material 2 that is in contact with the outer wall materials 1 and 1 is positioned so that its surface (outer surface) is slightly recessed from the surface of the outer wall material 1.

  Since the outer wall material 1 expands and contracts due to cold and warm, the width W of the joint also changes with the expansion and contraction of the outer wall material 1, but the width W is always 2 to 2 regardless of the expansion and contraction of the outer wall material 1. It is desirable to keep it within 7 mm. From this point, if the construction time is summer, the joint width W is narrowed within the above range, if it is winter, the joint width W is wide within the above range, and if it is spring / autumn. It is desirable to construct the outer wall material 1 so that the width W of the joint is around an intermediate value within the above range.

  Further, even if the outer wall material 1 expands and contracts due to cold and warm, the sealing member has elasticity so that the side end surface of the outer wall material 1 and the sealing material 2 are kept in close contact with each other, that is, in a watertight state. The outer wall material 1 is constructed while the material 2 is compressed in the width direction.

  Here, when the side wall surface of the outer wall material 1 is a flat surface, when the joint wall W is narrowed (for example, 2 mm), the sealing material 2 is expanded even when the outer wall material 1 contracts and the joint width W increases. It is difficult for the sealing material 2 to have elasticity that keeps the watertight state in contact with the outer wall material 1. In view of this point, as the outer wall material 1, as is apparent from FIG. 2, a side end surface having an inclined surface 15 on the inner side (indoor side) is used, and the sealing material 2 is also on both sides on the inner side. And having a cross-sectional shape that is wider than the outer side (outdoor side).

  The wider the sealing material 2, the easier it is to cope with the expansion of the joint width W due to the shrinkage of the outer wall material 1, so that the outer side portion of the sealing material 2 becomes the outer wall due to the shrinkage of the outer wall material 1. Even if the separation from the side end surface of the material 1 occurs, for example, the inner side portion of the sealing material 2 maintains a state in contact with the inclined surface 15 of the outer wall material 1 due to its elasticity. For this reason, making the joint width W narrower than before does not cause a new problem in terms of maintaining a watertight state. 2 in FIG. 2 is a building frame.

  In addition, as shown in FIG. 3, while using the thing which provided the inclined surface 15 only in the side end surface of the outer wall material 1 located in the one side of the sealing material 2, and the inner side of the sealing material 2 expanded only to one side. Also good.

  In any case, when the width W of the joint between the left and right outer wall materials 1 is 2 to 7 mm and the sealing material 2 having the same color as the surface color of the outer wall material 1 is arranged on this joint, the space between the left and right outer wall materials 1 Compared with the case where the width W of the joints is about 10 mm, the joints (vertical joints) are hardly conspicuous and good design properties can be maintained.

  By the way, even if the joint width W between the left and right outer wall materials 1 and 1 is 2 to 7 mm, the joint (vertical joint) is conspicuous if the surface of the sealing material 2 disposed on the joint protrudes beyond the outer wall material 1. It will be. Moreover, when it is located behind the bottom surface of the concave groove 10 formed on the surface of the outer wall material 1 of the sealing material 2, the joint portion becomes a dark shade and becomes conspicuous, especially when receiving sunlight from an oblique direction. .

  For this reason, it is preferable that the surface of the sealing material 2 is located behind the surface of the outer wall material 1 and not in the back of the bottom surface of the joint-shaped concave groove 10 of the outer wall material 1. . In addition, what is necessary is just to determine the surface position of the sealing material 2 by the height (depth dimension) H, when using a dry sealing material like the example of illustration. For example, the depth of the concave groove 10 is 4.0 mm on average, and is 4.5 mm at the maximum when the thickness of the outer wall material 1 is 16 mm, and is the maximum when the thickness of the outer wall material 1 is 18 mm. Is 5.0 mm. And the surface depth (dimension from the surface of the outer wall material 1 to the surface of the sealing material 2) of the sealing material 2 is 1.5 mm-2.0 mm.

  Moreover, it is advantageous also in the following point that the joint width W between the left and right outer wall materials 1 and 1 is 2 to 7 mm, which is narrower than the conventional one. That is, in order to make the joint inconspicuous as described above, it is very effective to make the surface color of the outer wall material 1 and the color of the sealing material 2 coincide. However, it is problematic in terms of cost to prepare the sealing material 2 having a color corresponding to each color of the outer wall material 1 having various colors in recent years. However, when the width W of the joint is within the above value, the joint (vertical joint) is the same color even if the surface color of the outer wall material 1 and the color of the sealing material 2 are not the same. It won't stand out.

  By the way, in the Munsell color system, when the hue is the same, if the difference in lightness value is within 3 and the numerical value difference in saturation is within 1, the joints (vertical joints) are hardly noticeable. On the other hand, when the width W of the joint between the left and right outer wall materials 1 and 1 is 10 mm, the surface color of the outer wall material 1 and the color of the sealing material 2 have the same hue and a numerical value difference of brightness of 1. If the numerical value of saturation is not set within 0.5, the joints (vertical joints) become conspicuous. However, the value of this numerical difference is a case of a specific hue, and if the hue is different, the numerical difference is changed, and it is not always applied under various outdoor natural light conditions.

  In the above embodiment, a dry sealing material is used as the sealing material 2, but a normal sealing material (caulking agent) may be filled in the joint between the left and right outer wall materials 1 and 1. Even in this case, it is effective to provide the inclined surface 15 on the side end surface of the outer wall material 1.

  Moreover, although the example of the vertical joint when the horizontally long rectangular outer wall material 1 is horizontally stretched is shown here, it can be applied to the horizontal joint when the vertically long rectangular outer wall material 1 is vertically stretched. Of course.

1 Outer wall material 2 Sealing material 10 Groove W W Joint width

Claims (4)

  In the outer wall structure in which a sealing material is disposed in a joint between a pair of parallel outer wall materials, the width of the outer side end portion of the joint is 2 mm or more and 7 mm or less, and the sealing material is the pair of outer walls. An outer wall structure characterized by being in contact with a material and having a surface thereof located on an inner side of the surface of the outer wall material.   The outer wall structure according to claim 1, wherein a concave groove is formed on a surface of the outer wall material, and a surface of the sealing material is located on an outer side than a bottom surface of the concave groove.   The outer wall structure according to claim 1, wherein the sealing material is an elastic dry sealing material.   The outer wall structure according to any one of claims 1 to 3, wherein a width of the joint is wider toward an inner side.

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