JP5118725B2 - Roof sealing material mounting method and roof sealing material - Google Patents

Description

  In the present invention, a three-plane structure comprising a roof surface that covers the upper surface of a lower floor in a multi-storey building and is inclined with respect to a horizontal plane, and two side wall surfaces sandwiching a corner of the upper floor on the roof surface intersect. The present invention relates to a method of attaching a roof sealing material made of a flexible sheet-like body having a predetermined thickness to a protruding corner.

  Conventionally, as shown in, for example, Patent Document 1 below, rainwater is formed at a portion where three planes composed of a roof surface of a lower floor and two side wall surfaces at a corner of an upper floor intersect (hereinafter referred to as a protruding corner). It has been practiced to install a sealing material (rain ending) to prevent the intrusion of such as.

  Specifically, the sealing material disclosed in the same document is made of a metal material or a synthetic resin material manufactured by pressing, and is bent into an L shape along two side wall surfaces at the corners of the upper floor. A wall surface covering plate and a roof surface covering plate extending outward from the lower end of the wall surface covering plate and arranged along the roof surface of the lower floor. The sealing material is attached so as to cover the protruding corner portion by fixing the wall surface covering plate to the side wall surface of the upper floor with a nail or a screw.

Japanese Utility Model Publication No. 50-42528

  Here, the roof of a building is often formed in a so-called inverted V shape that inclines in both directions with a ridge (top of the roof) as a boundary, and is generally inclined with respect to a horizontal plane. For this reason, it is impossible to attach the same shape of sealing material to the four projecting corners corresponding to the four corners of the upper floor. Specifically, out of the four protruding corners, the two protruding corners having a diagonal relationship and the remaining two protruding corners have different shapes of the protruding corners. In order to attach the sealing material to all the parts, it is necessary to prepare two types of sealing materials having different shapes.

  However, if it is necessary to prepare two types of sealing materials for the corners of one building, the following problems arise.

  For example, when the sealing material is manufactured by press molding, two types of press molds must be prepared, which increases the unit price of the sealing material. Moreover, there is a possibility that the type and number of seal materials to be prepared are mistaken, and that one type of seal material is left over and the other type of seal material is insufficient.

  The present invention has been made in view of the circumstances as described above, and a roof sealing material mounting method and a roof capable of properly sealing all projecting corners using a common roof sealing material An object is to provide a sealing material.

  In order to solve the above-mentioned problems, the present invention provides a roof surface that covers the upper surface of a lower floor in a multi-storey building and is inclined with respect to a horizontal plane, and two corners sandwiching a corner of the upper floor on the roof surface. A method of attaching a sealing material for a roof made of a flexible sheet-like body having a predetermined thickness to a corner where three planes made of side wall surfaces intersect with each other, the horizontal plane extending along the roof surface. An inclined base, and first and second rising portions that rise upward from the base and are disposed along two side wall surfaces sandwiching the corner portion, and the base and the first Each of the bent part with the rising part, the bent part with the base and the second rising part, and the bent part with the first rising part and the second rising part, along the folding line of each bent part. Identical to each other with grooves of a predetermined depth extending And a step of preparing the roof sealing material of each of the four projecting corners corresponding to the four corners of the upper floor, and two of the four roof sealing materials prepared above, A step of turning back the first and second rising parts with respect to the base from the groove of the bent part, and reversing the front and back of the two roof sealing materials; and four corners of the upper floor Of the four protruding corners corresponding to the above, the step of attaching a normal roof sealing material that does not reverse the front and back to the two protruding corners in a diagonal relationship, and the remaining two protruding corners, And a step of attaching a roof sealing material in a reverse state in which the front and back are reversed (claim 1).

  According to the present invention, the flexible roof sealing material formed three-dimensionally to seal the corner where the three planes intersect is provided with a groove along the folding line of the bent portion. Thus, based on a common roof sealing material, it is possible to create two types of forms: a normal state and a reverse state in which this is turned upside down. A common roof sealing material is obtained by attaching a normal roof sealing material to two diagonal corners and attaching a reverse roof sealing material to the remaining two corners. While being used, the sealing material for roof can be attached to all the protruding corners, and the sealing of each protruding corner can be properly achieved.

  As the roof sealing material, it is preferable to use one made of an olefin-based thermoplastic elastomer.

  In other words, olefinic thermoplastic elastomers have excellent water resistance, weather resistance, heat aging resistance, etc., and are rich in rubber elasticity. Is particularly suitable.

  In this case, in order to fix the roof sealing material to the protruding corner, staples, ridges, or nails may be driven into the roof sealing material.

  If it does in this way, the sealing material for roofs can be fixed to a protruding corner part by simple work. Moreover, since the roof sealing material is made of an olefin-based thermoplastic elastomer, even if staples, wrinkles, or nails are driven into the sealing material, the sealing performance is ensured satisfactorily.

  Further, the present invention is a flexible sheet-like body having a predetermined thickness, covers a top surface of a lower floor in a multi-storey building and is inclined with respect to a horizontal plane, and an upper floor on the roof surface. It is a roof sealing material that is attached so as to cover a protruding corner portion where three planes composed of two side wall surfaces sandwiching the corner portion of each other intersect, and is inclined with respect to the horizontal plane so as to be along the roof surface. A base, and a first and a second rising part that rises upward from the base and are respectively disposed along the two adjacent side wall surfaces, a bent part of the base and the first rising part, and the base A groove having a predetermined depth extending along the folding line of each bent portion is formed in each of the bent portions of the first rising portion and the second rising portion. The first and second standing points starting from the groove Rising portion that is folded back against said base, and is characterized in that the front and rear surfaces is displaceable between a reverse state in which reverse rotation, the normal state before the reverse (claim 4).

  ADVANTAGE OF THE INVENTION According to this invention, the sealing material for roofs applicable to the attachment method mentioned above can be provided.

  As the material for the roof sealing material, an olefin-based thermoplastic elastomer is suitable (Claim 5).

  As described above, according to the present invention, all the projecting corners can be properly sealed using a common roof sealing material.

It is a perspective view of the sealing material for roofs concerning one Embodiment of this invention. FIG. 3 is a three-side development view of the sealing material shown in FIG. 1. It is an expanded sectional view along the III-III line of FIG. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 2. It is an expanded sectional view along the VV line of FIG. It is a figure which shows the state before and behind turning up the rising part of the said sealing material with respect to a base. FIG. 7 is a perspective view showing a reverse sealing material in a reverse relationship with the sealing material (normal sealing material) shown in FIG. 1 and FIG. . FIG. 8 is a three-side development view of the sealing material shown in FIG. 7. It is a perspective view which shows the protruding corner part of a roof. It is a top view which shows the protruding corner part of a roof. It is a figure which shows the state after constructing a roofing material in a part of roof. It is a figure which shows the state after attaching the sealing material to the protruding corner part of a roof. FIG. 13 is a partially enlarged view of FIG. 12. It is a figure which shows the state after sticking a waterproofing tape on a sealing material. It is a figure which shows the state after constructing a new roofing material.

  FIG. 1 is a perspective view of a roof sealing material 1 (hereinafter simply referred to as a sealing material 1) according to an embodiment of the present invention, and FIG. The sealing material 1 shown in these drawings is a part used for sealing the roof portion of a building (see, for example, FIG. 12 and the like), and is formed by three-dimensionally bending a sheet-like body having a predetermined thickness. Composed.

  Specifically, the sealing material 1 includes a first rising portion 3 disposed along a vertical plane, a second rising portion 4 extending in an out-of-plane direction from one side of the first rising portion 3, and these It has integrally the base 2 provided so that it may protrude outside from the lower end part of the 1st, 2nd standing part 3 and 4. As shown in FIG.

  The first rising portion 3 is formed in a rectangular shape (substantially square shape in the illustrated example) in a front view, and includes an upper side portion 3a and a lower side portion 3b extending in the horizontal direction, and a pair of side sides 3c and 3d extending in the vertical direction. And have. On the other hand, the second rising part 4 is formed in a trapezoidal shape in which the upper side part 4a and the lower side part 4b are non-parallel. Specifically, the second rising part 4 includes an upper side part 4a extending in the horizontal direction, a lower side part 4b inclined to form a predetermined angle with respect to the horizontal direction, and a pair of side side parts 4c and 4d extending in the vertical direction. have.

  The first rising part 3 and the second rising part 4 are connected to the side part 4c on the long side of the second rising part 4 to the one side part 3d of the first rising part 3, so that the whole is viewed from above. It is formed in an inverted L shape. The intersection angle between the first and second rising portions 3 and 4 is set to 90 degrees.

  The base portion 2 is connected to the lower side portions 3b and 4b of the first and second rising portions 3 and 4, and is formed in an inverted L shape having a predetermined width in a top view. The base portion 2 is disposed along an inclined surface parallel to the lower side portion 4b of the second rising portion 4, and the inclination angle thereof corresponds to the inclination angle of a roof surface R (see FIG. 9 and the like) described later, for example, It is set to be inclined by 24 ° with respect to the horizontal plane.

  The bent portion between the base 2 and the first rising portion 3 is L1, the bent portion between the base 2 and the second rising portion 4 is L2, and the bent portion between the first and second rising portions 3 and 4 is L3. Then, in each of these bent portions L1, L2, and L3, grooves 10 shown in FIG. 3 to FIG. 5 are formed along the respective bent lines. The groove 10 is formed so as to be recessed by a predetermined amount from the surface (indicated by phantom lines) obtained by extending the surfaces of the base portion 2 and the first and second rising portions 3, 4. The thicknesses of the bent portions L1, L2, and L3 are thin.

  As the material of the sealing material 1, a flexible material that is soft enough to be freely bent by a human hand is used. For example, an olefinic thermoplastic elastomer can be suitably used as the material for the sealing material 1.

  The olefin-based thermoplastic elastomer is obtained by finely dispersing olefin-based rubber (EPR rubber or EPDM rubber) in a matrix of olefin-based resin (polyethylene-based or polypropylene-based resin), and has excellent rubber elasticity. It has characteristics such as excellent water resistance, weather resistance, and heat aging resistance. For this reason, it can use suitably as a material of the sealing material 1 used in the severe environment of a roof part.

  As shown in FIG. 6, the sealing material 1 made of such a flexible (flexible) material can fold the first and second rising portions 3, 4 with respect to the base 2. That is, as shown in FIGS. 3 to 5, since the sealing material 1 has the grooves 10 in the bent portions L1, L2, and L3, the sealing material 1 is easily bent and deformed from the groove 10 as a starting point ( That is, it is possible to change the bending angle of each of the bent portions L1, L2, and L3) and to maintain the state after bending. As a result, the sealing material 1 changes from a state in which the rising portions 3 and 4 rise upward with respect to the base portion 2 to a state in the lower side in the drawing in which the rising portions 3 and 4 are folded downward 180 °. It is possible to displace. In FIG. 6, the seal material after the rising portions 3 and 4 are folded back is represented by reference numeral 1 ′.

  FIG. 7 shows the sealing material 1 ′ (lower side in FIG. 6) that is turned upside down after being turned upside down. The sealing material 1 'is used for sealing the roof portion in the state shown in FIG. FIG. 8 shows a three-sided development view of the sealing material 1 ′ shown in FIG. 7.

  As can be seen by comparing the sealing material 1 ′ shown in FIGS. 7 and 8 with the original sealing material 1 (see FIGS. 1 and 2, etc.), the sealing material 1 ′ is turned upside down with respect to the sealing material 1. It has become a relationship. Hereinafter, the seal material 1 ′ after the reverse of the front and back is referred to as “reverse seal material”, and the seal material 1 before the reverse is referred to as “normal seal material”.

  FIG. 9 is a perspective view showing a protruding corner portion P of the roof, which is a target of sealing using each of the sealing materials 1 and 1 ′. FIG. 9 illustrates a two-story house as an example of a multi-story building. The projecting corner P is formed at the intersection of the upper floor (second floor) Y and the corner C of the upper surface (hereinafter referred to as the roof surface R) of the base material of the lower floor (first floor) X roof. . For example, in the case of the front corner P, it is formed at a portion where three planes composed of the roof surface R of the lower floor X and the two side wall surfaces W1 and W2 sandwiching the corner C of the upper floor Y intersect. ing.

  In the projecting corner portion P formed at the above-described location, rainwater or the like may enter the inside through the gap between the roof surface R and the side wall surfaces W1, W2, and therefore, to prevent this, the sealing material 1 , 1 ′ are attached (see FIG. 12). At this time, the base part 2 of the sealing materials 1 and 1 ′ is arranged along the roof surface R, and the rising parts 3 and 4 are arranged along the side wall surfaces W <b> 1 and W <b> 2.

  In FIG. 9, two projecting corners P are shown. In the following, when distinguishing between these, the front projecting corner P in the drawing is denoted as P1, and the rear projecting corner P is denoted as P2. . When attaching the sealing materials 1 and 1 'to the protruding corner portions P1 and P2, the normal sealing material 1 is attached to the protruding corner portion P1 on the near side, and the reverse sealing is applied to the protruding corner portion P2 on the back side. Material 1 'is attached. In other words, since the shapes of the front corner P1 and the rear corner P2 are different from each other, it is necessary to use the sealing materials 1 and 1 'which are in a reverse relationship.

  This point will be described in detail. The roof illustrated in FIG. 9 is formed in a so-called inverted V-shape that inclines in both directions with the top (ridge) as a boundary. That is, the roof surface R has a downward inclined surface inclined from the top toward the near side, and a downward inclined surface inclined toward the back from the top. And the front corner P1 is formed at the intersection of the roof surface R inclined downward from the top to the front and the side wall surfaces W1 and W2 of the upper floor Y, and the rear corner P2 Is formed at the intersection of the roof surface R inclined downward from the top and the side wall surfaces W2 and W1 of the upper floor Y (W1 is the side wall surface on the back side of the paper; see FIG. 10). For this reason, the front corner P1 and the rear corner P2 are different three-dimensionally.

  Furthermore, in FIG. 10, all the protruding corner portions existing in the roof portion including the protruding corner portion not shown in FIG. 9 are shown in a plan view. As shown in FIG. 10, as the side wall surface of the upper floor Y, there are a pair of side wall surfaces W1 and W1 facing each other and a pair of side wall surfaces W2 and W2 intersecting with each other. Corresponding to the four corners C, four projecting corners P1, P2, P3, and P4 are formed. Of these four protruding corners P1 to P4, the two protruding corners P1 and P2 shown in FIG. 9 have different shapes as described above. The shapes of the parts P3 and P4 are also different. On the other hand, when the two projecting corner portions P1 and P3 that are in a diagonal relationship are compared, they are in a point object relationship, and the shapes thereof are the same. Similarly, the remaining two protruding corners P2 and P4 have the same shape.

  For this reason, it is possible to attach the seal material 1 in a normal state to the two projecting corner portions P1 and P3 having the diagonal relationship. On the other hand, a reverse sealing material 1 'can be attached to the remaining two protruding corners P2, P4. Thus, for the four projecting corners P1 to P4 corresponding to the four corners of the upper floor Y, two normal seal materials 1 and two reverse seal materials 1 ′ are prepared. By doing so, the sealing materials 1 and 1 'can be attached to all the protruding corners.

  Even if the seal material 1 in the normal state and the seal material 1 'in the reverse state are prepared, the normal state seal material 1 can be displaced to the seal material 1' in the reverse state as long as it is turned over. Therefore, the seal materials to be prepared are all the same as the objects. That is, in the preparatory stage before actually attaching the sealing materials 1 and 1 ′ to the protruding corner portion P, all the normal sealing materials 1 may be prepared for the four protruding corner portions P (P1 to P4). Two of them may be turned upside down and displaced to the sealing material 1 'in the reverse state.

  Next, a procedure for attaching the sealing materials 1 and 1 'to the protruding corners P (P1 to P4) will be described with reference to FIGS.

  First, as shown in FIG. 11, a roofing material 20 made of a waterproof sheet is applied to a part of the roof surface R. The roofing material 20 is, for example, a sheet material made of felt soaked with asphalt, and is used as a base for roofing. In addition, since the roof surface R is inclined, the roofing material 20 is constructed while being partially overlapped in order from a low height position. Thereby, even if moisture such as rainwater falls along the inclined surface of the roof surface R, this moisture does not enter the inside through the gap between the roofing materials 20, and a good sealing property is ensured.

  However, at the stage of FIG. 11, at least the roof surface R that is located at least lower than the protruding corner portion P, that is, the roof surface R located outside the side wall surface W1 (front side in the figure) is first covered with the roofing material 20. Just do it. At this time, the side wall surface W1 is also covered over a range of a predetermined height using the same roofing material 20.

  After the roofing material 20 is applied, the sealing materials 1 and 1 'are attached to the protruding corner portion P as shown in FIG. That is, the seal material 1 in the normal state is attached to the protruding corner portions P1 and P3 (FIG. 10) in a diagonal relationship, and the seal material 1 'in the reverse state is attached to the remaining protruding corner portions P2 and P4.

  Below, the procedure at the time of attaching the sealing material 1 of a normal state to the protruding corner part P1 is demonstrated more concretely. In order to attach the sealing material 1, first, the sealing material 1 is arranged at a position as shown in FIG. Specifically, the bent portion L3 of the first rising portion 3 and the second rising portion 4 of the sealing material 1 is made to coincide with the line of the corner portion C where the side wall surfaces W1 and W2 intersect, and the base 2 and the first The bent portion L1 with the rising portion 3 is made to coincide with the boundary line S1 between the side wall surface W1 and the roof surface R, and the bent portion L2 between the base portion 2 and the second rising portion 4 is set with the side wall surface W2 and the roof surface R. The sealing material 1 is disposed so as to coincide with the boundary line S2.

  Thereby, in the protruding corner portion P1, the side wall surface W1 is covered by the first rising portion 3, the side wall surface W2 is covered by the second rising portion 4, and the roof surface R is covered by the base portion 2. In addition, since the roofing material 20 is constructed prior to the attachment of the sealing material 1, the first rising portion 3 of the sealing material 1 and a part of the base portion 2 sandwich the roofing material 20 therebetween. It arrange | positions so that the side wall surface W1 and the roof surface R may be covered in a state.

  In this state, the sealing material 1 is temporarily fixed to the protruding corner portion P1 by driving staples, scissors, or nails into important portions of the sealing material 1 using a tool such as a tucker. When staples, scissors, or nails are driven into the sealing material 1, depending on the material of the sealing material, rainwater or the like may enter from the driving portion. Therefore, also from the viewpoint of reliably preventing such a situation, it is preferable to use the above-described olefinic thermoplastic elastomer as the material of the sealing material 1. As described above, the olefin-based thermoplastic elastomer has excellent rubber elasticity and is excellent in water resistance, weather resistance, and the like. Therefore, even when the above staple, wrinkle, or nail is driven into the sealing material 1, The sealing performance is not impaired, and the performance of the sealing material 1 can be maintained over a long period of time.

  Next, as shown in FIG. 14, the first and second rising portions 3 and 4 are attached to the first and second rising portions 3 and 4 of the sealing material 1 by attaching the waterproof tape 25 to the side wall surface W1 (the roofing material). 20) and the side wall surface W2.

  After the sealing material 1 is attached to the projecting corner P1 as described above, a new roofing is formed in the direction intersecting with the roofing material 20 previously constructed (inclination direction of the roof surface R) as shown in FIG. The material 20 is constructed. The roofing material 20 covers the lower portion of the side wall surface W2, the roof surface R in the vicinity of the side wall surface W2, and a part of the sealing material 1 attached to the protruding corner portion P1. At this time, the end portion of the roofing material 20 is protruded to the outside of the corner portion C, and a cut along the line Z in the figure is made in the protruding portion, and one side divided by the cut is on the side wall surface W1 side. Bend it to

  In addition, although illustration is abbreviate | omitted in FIG. 15, about the roof surface R of the side (right side in the figure) of the newly constructed roofing material 20 is covered with another roofing material 20 to be constructed later. Become.

  The procedure for attaching the sealing material 1 to the protruding corner portion P1 has been described together with the construction of the roofing material 20, but the sealing materials 1, 1 ′ are also performed in the same procedure for the other protruding corner portions (P2, P3, P4). Is attached. However, since the shape is different between the protruding corners P1 and P3 and the protruding corners P2 and P4 as described above, of the other protruding corners (P2, P3, P4), the protruding corner P3 The same sealing material 1 in the normal state as in the case of the protruding corner portion P1 is attached, and the sealing material 1 ′ in the reverse state is attached to the protruding corner portions P2 and P4.

  As described above, in the present embodiment, as a sealing material for sealing the projected corners P (P1 to P4) of the roof, the sealing material is disposed in an inclined shape along the roof surface R (the upper surface of the roof base material). Sealing material 1 (roof sealing material for roofs), and first and second rising portions 3 and 4 disposed along two side wall surfaces W1 and W2 sandwiching the corner C of the upper floor Y, respectively. ) Are prepared. The sealing material 1 includes a bent portion L1 between the base portion 2 and the first rising portion 3, a bent portion L2 between the base portion 2 and the second rising portion 4, and a bent portion between the first rising portion 3 and the second rising portion 4. Each of the bent portions L3 has a groove 10 having a predetermined depth extending along the folding lines of the bent portions L1, L2, and L3, and the first and second rising portions 3 start from the groove 10. , 4 are folded back with respect to the base 2, the seal material 1 in the normal state can be displaced to the seal material 1 ′ in the reverse state with the front and back reversed. And when attaching the said sealing materials 1 and 1 'to the said 4 protruding corner parts P1-P4, respectively, the sealing material 1 of a normal state is attached to the two protruding corner parts P1 and P3 which are diagonally related. The reverse sealing material 1 ′ is attached to the remaining two protruding corners P2 and P4. Thus, by using the sealing material (1, 1 ′) that can be displaced between the normal state and the reverse state in which this is reversed, a common sealing material is used for all the protruding corners P1 to P4. Can be used.

  That is, in the above embodiment, the flexible sealing material 1 formed three-dimensionally to seal the protruding corners P1 to P4 where the three planes intersect, the folding lines of the bent portions L1, L2, and L3. By providing the groove 10 along the line, the seal material 1 in the form as it is (normal state) based on the common seal material 1 and the seal material 1 ′ in the reverse state in which this is turned upside down It is possible to create a form. Then, by attaching the sealing material 1 in the normal state to the two protruding corner portions P1 and P3 having a diagonal relationship, and attaching the sealing material 1 'in the reverse state to the remaining two protruding corner portions P2 and P4, While using the sealing material, the sealing materials 1 and 1 'can be attached to all the protruding corner portions P (P1 to P4), and the sealing of each protruding corner portion P can be properly achieved.

  Further, since a common sealing material can be used, it is not necessary to make the sealing material in two forms from the beginning (that is, only the normal sealing material 1 needs to be prepared in the preparation stage). One type of mold for producing the material is sufficient, and the unit price of the sealing material can be effectively reduced. Moreover, since there is no possibility that the type and number of the sealing materials will be mistaken, workability on site can be improved.

  In the above embodiment, an olefin-based thermoplastic elastomer is exemplified as a suitable example of the material of the sealing material 1 (1 ′). However, the material is not necessarily an olefin-based thermoplastic elastomer as long as the material has flexibility. Also good. However, as described above, olefin-based thermoplastic elastomer has excellent properties such as water resistance, weather resistance, heat aging resistance, and rubber elasticity. The material 1 is particularly suitable as a material.

  Further, when an olefin-based thermoplastic elastomer having the above properties is used as the material of the sealing material 1, even if staples, ridges, or nails are driven for fixing the sealing material 1, the sealing performance is not impaired. The performance of the sealing material 1 can be maintained over a long period of time.

  Furthermore, when the sealing material 1 made of an olefin-based thermoplastic elastomer is used, even if the slope (inclination angle) of the roof surface R is slightly changed, the sealing material 1 is flexibly deformed, so that the base portion 2 becomes the roof surface R. It is possible to make it closely adhere to. For this reason, for example, even if the slope of the roof surface R is any one of the so-called three-dimensional gradient (3/10) to six-dimensional gradient (6/10), the same corner material P can be used without any problem using the same sealing material 1. Can be sealed. The inclination angle when the gradient is 3 is about 17 °, and the inclination angle when the gradient is 6 is about 31 °. If the inclination angle of the base 2 is set to an intermediate value of these angles (for example, set to 24 °), the sealing material 1 is applied to any roof surface R of 3 to 6 inch gradient. Can do.

1 (Normal state) Sealing material 1 '(Reverse state) Sealing material 2 Base 3 First rising part 4 Second rising part 10 Groove L1, L2, L3 Bent part X Lower floor Y Upper floor C Corner W1, W2 Side wall surface P (P1 to P4)

Claims (5)

In a multi-storey building, at the corner where the three planes that cover the upper surface of the lower floor and are inclined with respect to the horizontal plane and the two planes sandwiching the corner of the upper floor on the roof intersect A method for attaching a roof sealing material comprising a flexible sheet-like body having a predetermined thickness,
A base portion that is inclined with respect to a horizontal plane so as to be along the roof surface, and a first and a second rising portion that are respectively arranged along two side wall surfaces that rise upward from the base portion and sandwich the corner portion Each of the bent portion of the base and the first rising portion, the bent portion of the base and the second rising portion, and the bent portion of the first rising portion and the second rising portion, respectively. Roof sealing materials having the same shape and having grooves of a predetermined depth extending along the folding lines of the respective bent portions are respectively prepared for the four projecting corner portions corresponding to the four corner portions of the upper floor. Process,
Two of the four roof sealing materials prepared are subjected to an operation of turning back the first and second rising portions with respect to the base from the groove of each bent portion, and the two roofs The process of reversing the front and back of the sealing material for
A step of attaching a normal state roof sealing material that does not reverse the front and back to two diagonal corners out of the four corners corresponding to the four corners of the upper floor,
Attaching the roof sealing material in a reverse state with the front and back reversed to the remaining two protruding corners. In the attachment method of the sealing material for roofs of Claim 1,
A method for attaching a roof sealing material, wherein the roof sealing material is made of an olefin-based thermoplastic elastomer. In the mounting method of the sealing material for roofs of Claim 2,
A method for attaching a roof sealing material, wherein staples, ridges, or nails are driven into the roof sealing material in order to fix the roof sealing material to a protruding corner. 2 which consists of a flexible sheet-like body having a predetermined thickness, covers the upper surface of the lower floor in a multi-storey building and is inclined with respect to the horizontal plane, and sandwiches the corner of the upper floor on the roof surface A roof sealing material that is attached so as to cover a corner where three planes composed of two side wall surfaces intersect,
A base portion that is inclined with respect to a horizontal plane so as to be along the roof surface, and a first and a second rising portion that rise upward from the base portion and are respectively disposed along the two adjacent side wall surfaces. ,
Each of the bent portions includes a bent portion of the base and the first rising portion, a bent portion of the base and the second rising portion, and a bent portion of the first rising portion and the second rising portion. A groove having a predetermined depth extending along the folding line is formed,
The first and second rising portions are folded back with respect to the base with the groove as a starting point, and can be displaced between a reverse state in which the front and back are reversed and a normal state before being reversed. Sealing material for roof. In the roof sealing material according to claim 4,
A roof sealing material, wherein the material of the roof sealing material is an olefin-based thermoplastic elastomer.

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