JP2008240304A - Flashing member and fixing structure of end part of waterproof sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flashing member capable of surely preventing rainwater from intruding between a waterproof sheet and a substrate and also minimizing the degradation of the aesthetic appearance of a building by suppressing the secular deterioration of a fused layer placed on the flashing member, and a fixing structure of the end part of a waterproof sheet. <P>SOLUTION: This throating member 5 comprises: a plate member 6 having a flat plate part 10 fixed to the upper end surface 1b of a parapet part 1 on a roof and a throating piece 11 extending from the flat plate part 10 along the outer wall surface 1c of the parapet part 1; and the fused layer 7 covering the entire one surface of the plate member 6. The end of the waterproof sheet 2 is thermally fused to the fused layer 7 covering the flat plate part 10. The throating piece 11 is so folded back midway that the fused layer is disposed on the inside. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a draining member used for fixing an end portion of a waterproof sheet covering a rooftop of a building to a parapet or the like of an outer edge portion, and a fixing structure of the end portion of the waterproof sheet.

  Conventionally, in order to waterproof a building roof, a method of laying a waterproof sheet made of vinyl chloride resin or the like on the roof to cover the base is generally employed. In this case, in order to prevent rainwater and the like from entering between the waterproof sheet and the base, it is necessary to fix the end of the waterproof sheet to the base, but as such a structure for fixing the end of the waterproof sheet, The following are known.

  For example, in the fixing structure of the end portion of the waterproof sheet described in Patent Document 1, the end portion of the waterproof sheet covering the base of the roof extends to the parapet portion (rise portion) provided along the outer edge of the roof, Two kinds of metal pressing plates (draining members) are respectively installed at the upper and lower corners of the parapet portion so as to press the end of the waterproof sheet from above. Then, these two types of pressing plates are fixed to the base by a fixing tool such as a bolt, whereby the end portion of the waterproof sheet is sandwiched and fixed between the base and the pressing plate.

  Further, the waterproof sheet end fixing structure described in Patent Document 2 includes a metal draining member having an L-shaped cross section having a flat plate portion and a draining piece, and the flat plate portion is bolted to the upper end surface of the parapet. On the other hand, the draining piece is disposed so as to extend from the flat plate portion along the upper wall surface of the parapet. And the edge part of a waterproof sheet is arrange | positioned so that the flat plate part of this draining member may be covered. Further, a fusion layer made of a material such as vinyl chloride resin is laminated on the outer surface of the draining member, and the waterproof layer is obtained by thermally fusing the fusion layer of the flat plate portion and the end portion of the waterproof sheet. Is fixed to the draining member.

No. 6-40746 JP 2001-27016 A

  However, as in Patent Document 1, when the waterproof sheet is first laid on the base, the pressing plate is pressed against the waterproof sheet from above, and the pressing plate is fixed to the base with a bolt or the like. Will be formed. In addition, when the ground is uneven, the waterproof sheet cannot be pressed against the ground with the entire lower surface of the presser plate, and the waterproof sheet can be pressed only around bolts or the like that are driven into the ground with a gap. Therefore, a gap is formed between the waterproof sheet and the base at a place away from the bolts. Therefore, there arises a problem that wind blows between the end portion of the waterproof sheet and the base and the waterproof sheet is blown up, or rainwater soaks under the waterproof sheet and leaks in the building.

  On the other hand, as in Patent Document 2, when the draining member is first fixed to the base with a bolt or the like, and the end of the waterproof sheet is covered from above and joined to the draining member by thermal fusion, the surface of the draining member In addition, it is necessary to previously form a fusion layer made of a thermoplastic resin. Here, the formation of the fusion layer only on the surface of the flat plate portion to which the waterproof sheet is bonded is disadvantageous in terms of cost because the manufacturing process becomes complicated. However, if the fusing layer is formed even on the surface of the draining piece, the draining piece is not covered with the waterproof sheet, and thus the fusing layer in this portion is always exposed. In general, a fusion layer made of a thermoplastic resin such as vinyl chloride resin is inferior in weather resistance. As a result, the exposed fused layer deteriorates early, and the appearance of the building is impaired.

  The object of the present invention is to reliably prevent rainwater and the like from entering between the waterproof sheet and the groundwork, and to prevent deterioration of the appearance of the building by suppressing the aging deterioration of the fusion layer laminated on the draining member. It is to provide a fixing structure for a draining member and a waterproof sheet end that can be prevented as much as possible.

Means for Solving the Problems and Effects of the Invention

The draining member of the first invention is a draining member used for fixing the end of the waterproof sheet to the outer edge of the roof of the building,
A flat plate portion fixed to the upper end surface of the outer edge portion, a draining piece extending from the flat plate portion along the outer wall surface of the outer edge portion, a plate member made of a metal plate, and one side of the plate member And the draining piece is folded in the middle so that the fusion layer is disposed inside.

  The draining member of the present invention is fixed to the upper end surface of the outer edge portion (parapet or the like) on the roof of the building in the flat plate portion of the plate member. At this time, the draining piece of the plate member extends along the outer wall surface of the outer edge portion and closes the space between the upper end surface of the outer edge portion and the flat plate portion. Furthermore, the end portion of the waterproof sheet is covered with the fusion layer laminated on the surface of the flat plate portion, and the end portion of the waterproof sheet is joined to the outer edge by thermal fusion bonding the flat plate portion and the end portion of the waterproof sheet. Fixed to the part.

  Furthermore, the fusion | melting layer has coat | covered the whole surface of the board member, and the draining piece is folded in the middle so that a fusion | melting layer may be arrange | positioned inside. Therefore, by forming the fusion layer on the entire surface of the plate member, the manufacturing process of the draining member can be simplified, and the fusion layer of the drainage piece not covered with the waterproof sheet can be prevented from being exposed. It can suppress that the external appearance of a building is impaired due to aged deterioration of a layering.

  The draining member of the second invention is characterized in that, in the first invention, the fusion layer is a layer made of a thermoplastic resin having a melting point of 85 ° C to 140 ° C. By setting the melting point of the fusion layer to 85 ° C. or higher, a sufficient bonding force can be maintained even in summertime when the temperature is high. On the other hand, by setting the melting point of the fusion layer to 140 ° C. or less, it is possible to prevent as much as possible a bonding failure caused by insufficient heat fusion.

  A draining member of a third invention is characterized in that, in the first or second invention, the plate member is made of a hot dip galvanized steel sheet. Thus, by forming the plate member from a hot-dip galvanized steel plate having excellent weather resistance, a draining member that is resistant to aging and has a long life can be obtained.

The fixing structure of the end portion of the waterproof sheet of the fourth invention is a fixing structure of the end portion of the waterproof sheet that fixes the end portion of the waterproof sheet to the outer edge of the roof of the building,
A drainage member having a plate member made of a metal plate having a flat plate portion and a draining piece, and a fusion layer covering the entire one surface of the plate member, and the flat plate portion is fixed to the upper end surface of the outer edge portion. And the draining piece is disposed so as to extend along the outer wall surface of the outer edge portion, and the fusion layer covering the flat plate portion and the end of the waterproof sheet are heat-sealed, and The draining piece is folded in the middle so that the fusion layer is arranged inside.

  In the fixing structure of the end portion of the waterproof sheet of the present invention, the flat plate portion of the plate member is fixed to the upper end surface of the outer edge portion of the roof of the building, and the drain piece of the plate member extends along the outer wall surface of the outer edge portion. Then, the space between the upper end surface of the outer edge portion and the flat plate portion is closed. Then, the end portion of the waterproof sheet is put on the fusion layer laminated on the surface of the flat plate portion, and the end portion of the waterproof sheet is joined to the outer edge by thermal fusion bonding the flat plate portion and the end portion of the waterproof sheet. Fixed to the part

  Furthermore, the fusion | melting layer has coat | covered the whole surface of the board member, and the draining piece is folded in the middle so that a fusion | melting layer may be arrange | positioned inside. Therefore, by forming the fusion layer on the entire surface of the plate member, the manufacturing process of the draining member can be simplified, and the fusion layer of the drainage piece not covered with the waterproof sheet can be prevented from being exposed. It can suppress that an external appearance is impaired due to aged deterioration of a layer.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial perspective view of a fixing structure of an end portion of a waterproof sheet provided on the roof of a building. FIG. 2 is an enlarged cross-sectional view around the parapet portion of FIG.

  As shown in FIGS. 1 and 2, a parapet portion 1 (outer edge portion) standing vertically from a flat field portion R is provided on the roof of the building 100 along the outer edge of the roof. And the edge part of the waterproof sheet 2 laid on the roof so that a base | substrate may be covered is fixed in the parapet part 1 so that rainwater etc. may not permeate from between base | substrates. More specifically, the flat field portion R and the parapet portion 1 are not covered with a single waterproof sheet 2, but as shown in FIG. 1, the waterproof sheet 2 that covers the rooftop flat portion R, and the parapet portion. Another waterproof sheet 2 that covers the inner wall surface 1 a and the upper end surface 1 b of 1 and is fixed to the parapet portion 1 is overlapped in the vicinity of the lower end of the parapet portion 1. In addition, as these waterproof sheets 2, what consists of rubbers, such as a vinyl chloride resin, a polyethylene resin, an olefin type thermoplastic elastomer, urethane, ethylene propylene rubber, and butyl rubber, can be used.

  As shown in FIG. 1, the waterproof sheet end fixing structure of the present embodiment includes a draining member 5 provided at the outer corner of the upper end of the parapet portion 1 and extending along the outer edge of the roof. FIG. 3 is a sectional view of the draining member 5. As shown in FIGS. 2 and 3, the draining member 5 includes a plate member 6 made of a metal plate and a fusion layer 7 that covers the entire surface of the plate member 6.

  The plate member 6 includes a flat plate portion 10 fixed to the upper end surface 1 b of the parapet portion 1, and a draining piece 11 extending downward from the end portion of the flat plate portion 10 and extending along the outer wall surface 1 c of the parapet portion 1. And. Moreover, as a metal plate which comprises the plate member 6, various things, such as a steel plate and an aluminum plate, can be used. However, when the plate member 6 is installed in the parapet portion 1, a part (draining piece 11) is always exposed. Therefore, from the viewpoint of suppressing the deterioration over time and improving the life of the draining member 5, the plate member 6 is preferably formed of a material having high weather resistance and corrosion resistance, such as a stainless steel plate and a hot dip galvanized steel plate. .

  The flat plate portion 10 is fixed by an anchor member 20 such as a bolt or a screw while being placed on the upper end surface 1 b of the parapet portion 1. Further, the draining piece 11 extends downward from the flat plate portion 10 along the outer wall surface 1c of the parapet portion 1, and closes the space between the flat plate portion 10 and the upper end surface 1b of the parapet portion 1 so that the gap between them is reached. It plays a role in preventing rainwater from entering. As will be described in detail later, the draining piece 11 is on the outer side (substantially opposite to the parapet part 1) in the middle part (substantially central part) so that the fusion layer 7 laminated on one side is arranged on the inner side. It is folded 180 degrees. As shown in FIGS. 2 and 3, the bent portion 8 is formed by further bending the lower end portion of the draining piece 11 in the state after being folded back to the inside (parapet portion 1 side). The bent portion 8 prevents rainwater or the like from entering between the flat plate portion 10 and the upper end surface 1 b of the parapet portion 1 from the inside of the draining piece 11.

  The fusion layer 7 is laminated on the outer surface of the plate member 6 in order to fix the end of the waterproof sheet 2 to the draining member 5, and the waterproof sheet 2 made of a material such as vinyl chloride resin as described above. It is made of a material that can be heat-sealed. Here, since the outdoor temperature is 60 ° C. or higher in summer, the melting point of the fusion layer 7 is preferably 85 ° C. or higher in order to maintain a sufficient bonding force. On the other hand, if the melting point is too high, sufficient heat fusion becomes difficult, so that the fusion layer 7 has a melting point of 140 ° C. in order to prevent bonding failure caused by insufficient heat fusion as much as possible. The following is preferable. Examples of the material of the fusing layer 7 that satisfies the above conditions include thermoplastic resins such as vinyl chloride resin, polyethylene resin, polypropylene resin, olefin-based thermoplastic elastomer, and thermoplastic urethane.

  And the edge part of the waterproof sheet 2 is covered on the melt | fusion layer 7 laminated | stacked on the flat plate part 10, and the edge part of the flat plate part 10 and the waterproof sheet 2 is fixed by heat sealing | fusion. In such a fixing structure of the waterproof sheet end, no gap is formed between the draining member 5 and the end of the waterproof sheet 2, so that wind blows between the waterproof sheet 2 and the ground or rainwater enters. Is reliably prevented.

  By the way, considering only that the end portion of the waterproof sheet 2 is joined to the draining member 5, the fusion layer 7 may be formed only on the surface of the flat plate portion 10. However, in order to form the fusion layer 7 only on a part of the plate member 6, a special step (masking step for masking a region where the fusion layer 7 is unnecessary, or removal of the unnecessary fusion layer 7 is performed. A removal process or the like) is required, and as a result, the manufacturing process of the draining member 5 becomes complicated. Therefore, from the viewpoint of reducing the manufacturing cost, it is preferable to form the fusion layer 7 on the entire surface of the plate member 6.

  However, since the draining piece 11 is not covered with the waterproof sheet 2, the fusion layer 7 laminated on the outer surface of the draining piece 11 is always exposed. Further, the fusion layer 7 made of the thermoplastic resin as described above is generally inferior in weather resistance. Therefore, the exposed fusion layer 7 is deteriorated early, and the appearance of the building 100 is impaired. It is also conceivable to prevent deterioration of the fusion layer 7 by covering up to the draining piece 11 with the waterproof sheet 2. However, in order to secure the necessary strength, the end of the waterproof sheet 2 having a certain thickness is fixed along the plate member 6 having the L-shaped cross section composed of the flat plate portion 10 and the draining piece 11. It is difficult, and there is a possibility that the waterproof sheet 2 floats locally and a gap is generated between the sheet member 6.

  Therefore, in the present embodiment, the draining piece 11 is folded 180 degrees outward in the middle part (substantially central part). As a result, the fusion layer 7 laminated on the inner part 11a and the fusion layer 7 folded and laminated on the outer part 11b positioned outside are connected to the inner side of the draining piece 11 (the inner part 11a and the outer part 11b). Between). Therefore, the fusion layer 7 formed on the draining piece 11 is prevented from being exposed, and the problem that the appearance is impaired due to the aging of the fusion layer 7 does not occur. In order to prevent rainwater and the like from entering between the inner portion 11a and the folded outer portion 11b, it is preferable that the inner portion 11a and the outer portion 11b are in close contact as much as possible.

  The embodiment of the present invention has been described above with an example, but the form to which the present invention can be applied is not limited to the above-described embodiment, and appropriate modifications are made without departing from the scope of the present invention. be able to.

  For example, the plate member 6 of the draining member 5 is a portion that extends along the inner wall surface 1 a of the parapet portion 1 from the end opposite to the draining piece 11 of the flat plate portion 10 in addition to the flat plate portion 10 and the draining piece 11. It may be formed in a U-shaped cross section.

  Moreover, not only the form in which the parapet part 1 is provided in the outer edge part of the roof of the building 100 but also the form in which the outer edge part does not stand up (for example, the form in which the outer edge part of the roof is flush with the flat field part R). In addition, the present invention can be applied.

It is a partial perspective view of the fixing structure of the waterproof sheet edge part provided on the roof of the building. FIG. 2 is an enlarged cross-sectional view around a parapet portion in FIG. 1. It is sectional drawing of a draining member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parapet part 2 Waterproof sheet 5 Draining member 6 Plate member 7 Fusing layer 10 Flat plate part 11 Draining piece

Claims (4)

A draining member used for fixing the end of the waterproof sheet to the outer edge of the roof of the building,
A flat plate portion fixed to the upper end surface of the outer edge portion, a draining piece extending from the flat plate portion along the outer wall surface of the outer edge portion, and a plate member made of a metal plate,
A fusion layer covering the entire one side of the plate member,
The draining member, wherein the draining piece is folded back halfway so that the fusion layer is disposed inside.   The draining member according to claim 1, wherein the fusion layer is a layer made of a thermoplastic resin having a melting point of 85C to 140C.   The draining member according to claim 1, wherein the plate member is made of a hot dip galvanized steel plate. A waterproof sheet end fixing structure for fixing the end of the waterproof sheet to the outer edge of the roof of the building,
A plate member made of a metal plate having a flat plate portion and a drain piece, and a fusing member having a fusion layer covering the entire one surface of the plate member,
The flat plate portion is fixed to the upper end surface of the outer edge portion, and the draining piece is disposed so as to extend along the outer wall surface of the outer edge portion,
The fusion-bonding layer covering the flat plate portion and the end portion of the waterproof sheet are heat-sealed,
Further, the waterproofing piece end fixing structure is characterized in that the draining piece is folded back halfway so that the fusion layer is disposed inside.

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