JP2001011957A - Dry joint structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry joint structure which is excellently waterproof, and free from any damages on the design of an external wall. SOLUTION: In a horizontal joint part between upper and lower sidings 2, 1, a lower dry horizontal joint member 8 is provided on a lower siding 1, and an upper dry horizontal joint member 7 is provided between this lower dry horizontal joint member 8 and a lower end face of the upper siding 2, and closely attached to the lower dry horizontal joint member 8. In addition, a riser piece 13 extending upward of the lower dry horizontal joint member 8 is provided on a reverse side of the upper siding 2. A clearance 24 is provided between an upper end of the riser piece 13 and the reverse surface of the upper siding 2 to allow the water entering and dropping from an upper part to flow onto an upper surface of the lower dry horizontal joint member 8 from this clearance 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry joint structure for a building in which an outer wall is constructed of siding material, and more particularly to a structure of a horizontal joint.

[0002]

2. Description of the Related Art Conventionally, a sealing structure of a horizontal joint on an outer wall to which a siding material is attached is divided into FIGS. FIG. 16 shows a case where a backup material (72) is inserted into a joint gap between upper and lower siding materials (71) and (71), and the outside thereof is filled with a wet sealing agent (73).
Draining material (74) supported behind siding material (71) (71)
Is projected from the joint gap (75) to the outer wall side, FIG.
Reference numeral 8 denotes a case where a decorative body difference (76) is attached to the outside and the drainage member (74) in FIG. 17 is covered.

[0003]

In the above-described conventional cross joint structure, denatured silicon is generally used as the wet sealing agent (73) in FIG. Has the drawback of being soiled.
In addition, when the vertical joint is a dry joint, if the horizontal joint is such a wet sealing, there is a problem that infiltration water from the vertical joint to the back side is not discharged from the horizontal joint.

On the other hand, in the case of using the draining material (74) shown in FIG. 17, since the draining material (74) is exposed on the outer wall surface, its appearance is impaired.
Does not match the metal surface of 4), making the appearance very poor. Figure
The makeup gap (76) in (18) attempts to compensate for this disadvantage, but requires a special member called the gap (76), and the gap (76) itself matches the design of the outer wall. Sometimes not.

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional drawbacks and to provide a dry joint structure which is excellent in waterproofness and does not impair the design of the outer wall.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a method in which a lower joint is fixed to an upper end surface of a lower siding material at a horizontal joint between upper and lower siding materials. Or the lower dry siding material (8) attached to the lower siding material (1) or a member integrated with the siding material (1) so as to be in close contact with the upper end surface thereof. The upper dry siding material (7) interposed between the lower dry side sizing material (8) and the lower end surface of the upper siding material (2), and the upper siding material
(2) On the back side, a rising piece (13) extending upward from the lower dry side grain joint material (8) is provided.

[0007] At this time, a gap (24) is provided between the upper end of the rising piece (13) and the back surface of the upper siding material (2), and the inflowing water falling from above is removed from the gap (24) to the lower side. It is made to flow to the upper surface of the dry side grain base material (8).

Further, the upper dry side joint material (7) is considered to be fixed to the lower end surface of the upper siding material (2) by bonding or other means, and is formed on the lower end surface of the upper siding material (2). Upper side dry side joint material (7)
It is conceivable to insert the projections (41) and (56).

Further, the upper dry siding material (7) is brought into close contact with the lower end surface of the upper siding material (2) and the lower dry siding material (1) so that the lower end surface of the upper siding material (2) In some cases, it is inserted between the lower dry side grain base material (8).

The upper dry side joint material (7) is hollow and may be screwed (44) from the inside of the hollow portion to the upper siding material (2). In the invention of claim 7, the lower siding material (1)
On the back side of the is formed a groove (23) with the top side opened,
In this groove (23), the lower dry type sided joint material (8) provided with a downwardly projecting mounting piece (10) lower end inserted from above and mounted.

In this case, the joint receiving material (18) is fixed to the back surface of the lower siding material (1) so as to form the groove (23) between the joint material and the back surface of the lower siding material (1). Further, in the invention according to the ninth aspect, the vertical mounting piece (10) has a fin piece (11) abutting on an inner surface of the groove (23).
Are provided on both sides or one side of the mounting piece (10).

[0012] It is conceivable that the lower dry side grain ground material (8) is adhered and fixed to the lower siding material (1), and at that time, formed on the upper end surface of the lower siding material (1). Groove (5
It is conceivable to fit the projection (57) of the lower dry side grain base material (8) into 9).

In the twelfth aspect of the present invention, the lower dry siding material (1) or the vertical support strip (39) provided on the frame (3) on the back surface of the lower siding material (1) is attached to the lower dry siding material. The slit (37) of the member (8) is fitted and attached from above.

Similarly, in the invention of claim 13 of the present application, the lower dry side seam base material (8) has a recess (49) in a portion inside a portion in close contact with the upper dry side seam ground material (7). Formed
On the back side of the upper siding material (2), there is provided one that is a pool of infiltration water that falls from above.

Further, in the invention of claim 14 of this application,
A lower dry side seam material (8), which is attached after the lower siding material (2) is mounted, wherein the lower dry side seam material (8) is attached.
(8) The positions of the joints (29) between the vertical joints are different from each other.

According to the invention of claim 15 of the present application, in the above description, in the vertical joint between the left and right siding materials (1), (1), the lower siding material ( 1) and the lower dry sided joint material
The gap between (8) and (8) is filled with a wet sealing agent (30).

Similarly, in the invention of claim 16 of the present application, the dry joints (25) are filled in the joints between the left and right siding members and the dry joints (25). ) Is characterized in that its lower end penetrates the upper dry type joint material (7), and the lower dry type lateral joint material (8) penetrates the dry vertical joint material (25).

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, (1) and (1) denote a pair of left and right siding members arranged side by side, and (2) denotes a siding material.
It is a siding material arranged on the upper side of one of the siding materials (1) (1). As shown in FIG. 2, a frame-shaped frame (3) is integrally attached to the siding members (1) and (2) in advance on the back side thereof. Reference numeral (4) denotes an upper chord of the frame (3), which is attached to a frame of a building (not shown) by a metal fitting (17) attached to the upper surface of the upper chord (4). (5) is a lower chord material of the frame (3), and (6) and (6) are left and right vertical frame materials. In this specification, the siding members (1) and (2) are indicated by different reference numerals in order to distinguish between the upper side and the lower side, but actually have the same structure.

As shown in the figure, an upper dry side joint material 7 serving as an upper side of the side joint portion is attached to the lower end surfaces of the siding members 1 and 2 in advance along the lower end surfaces thereof. ing. This upper dry side grain joint material (7) has a substantially hemispherical cross-section in the cross section, and in the outer peripheral plane portion, to the lower end surface of the siding materials (1) and (2) using, for example, a double-sided tape (12). It is glued and fixed.

(8) The lower dry side joint material below the side joint portion, which is a plate-like joint body made of a soft material such as rubber.
On the back surface of (9), a mounting piece (10) is provided so as to hang downward from a substantially central portion in the width direction.
This mounting piece (10) has three fin pieces (11), (11) ... on the surface side which is the indoor side when mounted on the horizontal joint so as to protrude toward the indoor side. They are provided integrally at a vertical interval. The upper surface of the joint body (9) has a flat shape slightly inclined downward toward the outdoor side, and the front end (16) of the outdoor side is further inclined downward.

(13) is a rising piece that rises upward from the inner end of the joint body (9). A water return (13a) projecting obliquely downward to the outside of the room is integrally formed at an intermediate portion in the vertical direction of the rising piece (13). This water return (13
a) may be formed in a downward L-shape.

On the other hand, the mounting piece on the back of the joint body (9)
A back seal member (15) made of a sponge or other stretchable soft material is bonded in advance to the outdoor side of (10).

Reference numeral (18) denotes a joint fitting, which has a horizontal mounting piece (19) at the lower end, and the horizontal mounting piece (19) is shown in FIG. 5 on the upper surface of the upper chord member (4) of the frame. Screw (2
0) is fixed. Further, one end of the mounting piece (19) is vertically bent and rises upward along the back surface of the siding material (1), and the rising portion (21) is moved to the back surface of the siding material (1). The siding material is adhered without any gap (22), and the upper end is bent horizontally in the direction away from the siding (1), then vertically upward, and further obliquely in the same direction. A groove (23) opened upward is formed between the back surface of (1).

FIG. 1 (25) shows left and right siding materials (1).
(1) Dry vertical joint material (2
5), and three fins (26) (2
6) ... are integrally provided. (27) is a secondary sealing material which is similarly arranged inward from the vertical joints of the left and right siding materials (1) and (1).

Next, the method of constructing the joint consisting of the above-mentioned dry type horizontal joint material (7) (8) and the dry type vertical joint material (27) will be described. First, the siding material (1) (1) ) Is attached to the frame material of the outer wall, and after level adjustment of the siding materials (1) and (1), they are officially fixed. Each siding material
(1) As shown in FIG. 5, the dry joint material (25) is filled into the longitudinal joint portion between (1) from the outside. In this state, a mounting piece (10) of the lower dry side joint material (8) is inserted into the groove (23) on the back surface of the siding material (1) (1) from above and mounted. Each siding material (1) (1) Vertical frame material on the back (6)
As shown in FIG. 5, a secondary sealing material (27) is attached between (6) and so as to close the gap at this portion. The lower end of the secondary sealing material (27) is located on the outdoor side at the upper end of the rising piece (13), and is vertically overlapped with the rising piece (13). .

The above-mentioned lower dry side joint material (8) is attached while connecting ones of a predetermined size in the horizontal joint direction, but the vertical joint part between the siding materials (1) and (1) is the same dry side joint material.
As shown in FIG. 3, the joints (29) between the dry type joints (8) are located at positions different from the vertical joints as shown in FIG. Then, the seam (29) is filled with a wet seal in the gap between the end faces of the dry side joint material (8), and furthermore, a sealing tape is applied from the upper surface of the joint body (9) to the outer surface of the rising piece (13). Attach (28) to prevent rainwater from entering this area.

When there is an inward / outward movement between the siding members (1) and (1), the fins (11) are flexibly correspondingly flexed and follow the fins. If there is a gap below the joint body as shown in FIG. 7 due to the upper and lower unevenness of each siding material (1), this portion is filled with a wet seal (30). .

As described above, the lower dry side joint material (8)
After mounting, the upper siding material (2), the upper dry side joint material (7) on the lower end surface thereof, and the lower dry side joint material (8)
The joint body (9) is installed by pressing against the top surface,
The frame (3) on the back side is fixed to a frame member (not shown). Also, a dry vertical joint material (25) is inserted into the vertical joint between the upper siding members (2) and (2) from the outside in the same manner as described above. As shown in FIG. 8, the lower end of the dry type vertical joint material (25) passes between the upper dry lateral joint materials (7) and (7) of each siding material (2) and (2), and the lower dry lateral joint material (25). The material (8) comes into contact with the upper surface of the joint body (9). As shown in FIG. 5, the joint body (9) protrudes inward from the back surface of each of the siding materials (1) and (2), and a rising piece (13) rising from the inner end thereof and an upper siding material (2). ) Is formed with a gap (24). Furthermore, the back frame of each siding material (2) (2) adjacent on the left and right
The secondary sealing material (27) is also provided between the vertical frame materials (6) and (6) in (3).
Attach.

[0029] In the joint structure as described above, the upper joint (7) and the lower dry joint (7) are used in the horizontal joint.
The joint body (9) of (8) is in close contact with the joint body (9), and the back sealing material (15) on the back surface of the joint body (9) is in close contact with the upper end surface of the lower siding material (1). Prevent rainwater from entering. On the other hand, the vertical joint portion prevents rainwater from entering by the vertical joint material (25) filled in this portion. If rainwater infiltrates from this vertical joint, the rainwater
(25) The rainwater falls on the upper surface of the joint body (9) along the back side, but this rainwater does not enter the indoor side due to the rising pieces (13), and is discharged to the outside from the horizontal joint.

Similarly, even if rainwater enters from between the joint body (9) of the horizontal joint portion and the upper dry side joint material (7), the rising piece (13) prevents entry into the indoor side. Is done. Further, when rainwater intrudes from between the back seal material (15) on the back surface of the joint body (9) and the lower siding material (1) in the horizontal joint portion, the rainwater flows into the metal fitting (18). Even if it falls into a groove (23) formed by the back surface of the lower siding material (1) and moves laterally along the groove (23), it does not enter the room side. In this case, in the vertical joint, there is a gap between the metal fittings (18) and (18) of the siding materials (1) and (1), and as shown in FIG.
Since there is a secondary sealing material (27) inside, there is no more intrusion of water into the room.

FIG. 9 shows that the joint receiving member (18) is directly fixed to the back surface of the lower siding material (1) with a screw (31). That is, (32) is a vertical mounting plate, and on one surface side of the vertical mounting plate (32), an L-shaped piece (33) is integrally connected to an intermediate portion in the up-down direction to form an upper part. The side forms an open groove (23). And L-shaped piece
Below the connecting part of (33), the vertical mounting plate (32)
Are fixed to the back surface of the siding material (1) with screws (31). In this case, the vertical mounting plate (32) is bonded to the back surface of the siding material (1) in the same manner as described above so that infiltration water does not drop from between the vertical mounting plate (32) and the back surface of the siding material (1). It is desirable to do.

In this embodiment, the lower dry side seam joint material
In (18), the joint body (9), the rising piece (13), and the vertical mounting piece (10) are formed integrally with a soft synthetic resin or the like. Fins on both sides (11) (11)
Are formed integrally with each other, thereby making it easier to follow the inward and outward movement of each siding material (1). The upper dry side grain joint material (7) has a hollow shape with a slightly trapezoidal cross section.
It is previously bonded to the lower end surface of the upper siding material (2) by 2).

A plurality of fins (34) are integrally formed on the back surface of the joint body (9) in place of the back sealing material (15).

FIG. 10 shows another mounting structure of the lower dry side joint material (8), in which an L-shaped bracket (18) is attached to its horizontal portion (3).
In 6), it is fixed to the upper surface of the upper chord material (4) of the back frame. On the other hand, a slit (37) is formed from the lower end of the vertical mounting piece (10) of the horizontal seam base material (8).
(37) is attached to the vertical piece (39) of the metal fitting (18) so as to be fitted from above. Other structures are the same as those in FIG.

FIG. 11 and FIG.
FIG. 11 shows another example of the mounting structure of (7). FIG. 11 shows a case in which a projection (41) is provided along the longitudinal direction on the upper surface of the dry-type cross joint material (7) and formed on the lower surface of the siding material (2). The projection (41) is driven into the recessed groove (42). In this case, the adhesive (43) is applied in advance in the concave groove (42), and then the projection (41) is fitted therein. Unlike the above-described adhesive simply bonded with the double-sided tape (12) or the like, There is little danger that the dry-type cross joint material (7) will fall off or peel off due to poor adhesion. FIG. 12 shows a hollow upper dry sided joint material for the same purpose.
(7) The upper side portion is fixed to the screw (44) together with the adhesive with the double-sided tape (12) or the like. A work hole (45) for inserting a screw (44) into the hollow portion is formed in the dry-type cross grain base material (7).

FIG. 13 shows that the lower dry siding material (8) is bonded to the upper end surface of the lower siding material (1) via an adhesive, for example, a double-sided tape (47). It is designed to be fixed to the material (1). Joint body (9)
A vertical fixing piece (10) is provided so as to hang down integrally on the back surface of the siding material (1). In this embodiment, the upper dry side joint material (7) is attached on site, and the same structure as the vertical joint side material (25) is attached to the lower dry side joint material (8) and the upper side siding material is attached. After installing (2), it is inserted from the outside.

FIG. 14 shows the same lower dry sided joint material as in FIG.
In the mounting structure of (8), a substantially triangular raised portion (48) having a hollow portion is integrally provided on the upper surface of the joint body (9) of the lower dry side joint material (8). 48) is brought into close contact with the same upper dry side grain joint material (7) as in FIG. 10 and the like. At this time, the ridges (48) and the upper dry-type cross seam base material (7)
Is inclined obliquely so as to become lower toward the outside. In this embodiment, in particular, rainwater that has infiltrated from the vertical joint portion has a concave portion between the raised portion (48) and the rising piece (13).
(49) By falling inside, it is prevented from entering the indoor side.

FIG. 15 shows that each of the dry side joints (7) and (8) is attached to each of the siding members (2) and (1) by a double-sided tape (12) and (34). The protrusions (56) and (57) formed along the longitudinal direction of the members (7) and (8) are driven into the concave grooves (58) and (59) on the lower end surface or the upper end surface of the siding material (2) (1). The fitting strength is increased by fitting. Further, a refractory material (53) is embedded in the joint body (9) of the lower dry side joint material (8). Such refractory material (53) can be used for all joint materials (7) of other embodiments.
(8) Applicable to (25). The mounting structure of the lower dry side joint material (8) of this embodiment is the same as that of FIG. 11, except that the lower surface of the joint body (9) is bonded to the lower siding (54) with an adhesive such as a double-sided tape (54). It is adhered to the upper surface of 1).

[0039]

As described above, according to the present invention, since the cross joints are formed by the completely dry method, there is no inconvenience that the sealing material flows out and stains the outer wall surface unlike the wet method. . Even with the same dry construction method, since the dry joint material is in the horizontal joint, it does not greatly expose to the outer wall surface like a drained material and impairs the appearance design, There is no need to use and repair the appearance.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an essential part showing an joint part of an outer wall according to an embodiment of the present invention.

FIG. 2 is a partially omitted perspective view of the siding material as viewed from the back side.

FIG. 3 is a perspective view of a main part of the joint portion of the outer wall as viewed from the outside.

FIG. 4 is a perspective view of a main part similarly viewed from the inside.

FIG. 5 is a cross-sectional view of a main part, similarly showing a vertical joint at a vertical joint.

6 is a cross-sectional view of a main part taken along line AA of FIG.

FIG. 7 is a longitudinal sectional front view of a main part of a crossing portion between a vertical joint and a horizontal joint before the upper siding is attached.

FIG. 8 is a front view of an intersection between a vertical joint and a horizontal joint.

FIG. 9 is a longitudinal sectional view of a main part of a horizontal joint portion showing another embodiment of the present invention.

FIG. 10 is a vertical cross-sectional view of a main part of a horizontal joint, showing still another embodiment of the present invention.

FIG. 11 is a longitudinal sectional view of a main part showing another attachment structure of the upper dry side joint material.

FIG. 12 is a longitudinal sectional view of a main part showing another mounting structure for the upper dry side joint material.

FIG. 13 is a vertical cross-sectional view of a main part of a horizontal joint, showing another embodiment of the present invention.

FIG. 14 is a vertical cross-sectional view of a main part of a horizontal joint, showing still another embodiment of the present invention.

FIG. 15 is a vertical cross-sectional view of a main part of a horizontal joint, showing another embodiment of the present invention.

FIG. 16 is a longitudinal sectional view of a main part showing a conventional example in which a wet seal is applied to a horizontal joint.

FIG. 17 is a longitudinal sectional view of a main part showing a conventional example in which a drainer is attached to a horizontal joint.

18 is a longitudinal sectional view of a main part showing a conventional example in which a decorative cylinder difference is further attached to that of FIG.

[Explanation of symbols]

 (1) Lower siding material (2) Upper siding material (7) Upper dry side joint material (8) Lower dry side joint material (9) Joint body (10) Vertical mounting piece (11) Fin piece (13) Standing Raised piece (15) Back seal (18) Joint fitting (23) Groove (24) Gap (25) Dry vertical joint (27) Secondary seal (29) Joint (30) Wet seal (41) Projection (42) Groove (44) Screw (49) Recess (52) Drain hole (56) Protrusion (57) Protrusion (58) Groove (59) Groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yahiro Yakuhiro 1-88, Oyodonaka, Kita-ku, Osaka City Inside Sekisui House Co., Ltd. (72) Inventor Shigeki Ikeda 4-chome, Naganecho, Obu City, Aichi Prefecture Address Tokai Kogyo Co., Ltd. (72) Inventor Osamu Tahara 4-1-1 Naganecho, Obu City, Aichi Prefecture F-term (reference) 2E001 DA01 DA02 FA04 FA52 FA53 GA53 GA60 GA67 GA72 GA76 HE01 HE02 HF12 LA01 LA04 LA09 MA02 MA04 MA06 MA11 MA13 MA18 2E110 AA14 AA42 AA57 AB04 AB22 BC03 DD02 DD04 DD09 DD10 DD12 GA32Z GA33W

Claims (16)

[Claims] At a horizontal joint between upper and lower siding materials (2) and (1), it is fixed to an upper end surface of a lower siding material (1) or is in close contact with the upper end surface thereof.
A lower dry side seam (8) attached to the lower siding material (1) or a member (18) integral with the siding material (1), and the lower dry side seam (8) And the upper dry siding material (7) interposed between the upper siding material (2) and the lower end surface.
(2) A dry joint structure for a building, characterized in that a rising piece (13) extending upward from the lower dry side joint material (8) is provided on the back side. 2. A gap (24) is provided between the upper end of the rising piece (13) and the back surface of the upper siding material (2), and infiltrated water falling from above is removed from the gap (24) by a lower dry type. Side grain base material (8)
2. A dry joint structure for a building according to claim 1, wherein the dry joint structure is made to flow to an upper surface of the building. 3. The dry joint structure for a building according to claim 1, wherein the upper dry joint material is fixed to a lower end surface of the upper siding material by bonding or other means. 4. The projections (4) of the upper dry side joint material (7) are inserted into grooves (42) (58) formed on the lower end surface of the upper siding material (2).
1) The dry joint structure of a building according to claim 1 or 2, wherein (56) is inserted. 5. The upper dry siding material (7) is in close contact with the lower end surface of the upper siding material (2) and the lower dry siding material (8). The dry joint structure of a building according to claim 1 or 2, wherein the dry joint structure is inserted between the lower dry joint material (8). 6. The upper dry side joint material (7) is hollow, and a screw (4) is inserted into the upper side siding material (2) from inside the hollow portion.
4) The dry joint structure of a building according to claim 1 or 2, wherein the joint is stopped. 7. On the back side of the lower siding material (1),
A groove (23) having an open upper surface is formed, and into the groove (23), a downwardly projecting mounting piece protruding downward from the lower dry side joint material (8).
(10) The lower end is attached by being inserted from above.
Or the dry joint structure of the building according to 2. 8. A joint receiving material (18) is fixed to the back surface of the lower siding material (1) so as to form the groove (23) with the back surface of the lower siding material (1). Claim 7
Dry joint structure of the described building. 9. The vertical mounting piece (10) includes a groove (23).
9. The dry cross-joint structure for a building according to claim 7, wherein the fin pieces (11) abutting on the inner side face are provided on both sides or one side of the mounting piece (10). 10. The dry joint structure of a building according to claim 1, wherein the lower dry side joint material (8) is adhered and fixed to the lower siding material (1). 11. A projection (57) of a lower dry side joint material (8) into a groove (59) formed on an upper end surface of a lower siding material (1).
The dry joint structure of a building according to claim 10, wherein 12. A slit (37) of a lower dry sided joint material (8) to a lower siding material (1) or a vertical support piece (39) provided on a frame (3) on the back surface of the siding material (1). The dry joint structure for a building according to claim 1 or 2, wherein the joint is fitted from above. 13. The lower dry side seam material (8) has a recess (49) formed at a portion inside a portion in close contact with the upper dry side seam material (7), and the upper side siding material (2). On the back side,
The dry joint structure for a building according to claim 1 or 2, wherein the dry joint structure is a pool portion of infiltration water falling from above. 14. The lower dry side grain filler material (8) is attached after attaching the lower siding material (2),
The dry joint structure of a building according to claim 1 or 2, wherein the joints (29) of the lower dry joints (8) and the positions of the vertical joints are different. 15. In a vertical joint between left and right siding materials (1) and (2), a lower siding material (1) and a lower dry transverse seam material (8) caused by upper and lower irregularities between the two siding materials. 3.) The dry cross joint structure of a building according to claim 1, wherein a gap between the first and second structures is filled with a wet sealing agent (30). The vertical joints between the left and right siding materials are filled with dry vertical joints (25), and the lower ends of the dry vertical joints (25) have an upper dry joint (7). 3. The dry joint structure of a building according to claim 1 or 2, wherein the lower dry joint material (8) penetrates the dry vertical joint material (25).