JP2021124008A - Tile falling and scattering prevention method and tile falling and scattering prevention structure - Google Patents

Abstract

To prevent tiles from falling and scattering at an existing tiled roof.SOLUTION: A tile falling and scattering prevention method comprises a coupling process of adhering an asphalt tape between adjacent tiles in a longitudinal direction of an existing tiled roof and coupling the plurality of continuing tiles. A tile falling and scattering prevention structure has the asphalt tape for coupling the plurality of tiles continuing in the longitudinal direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a construction method for preventing the falling and scattering of roof tiles of an existing roof tile, and a structure constructed by this construction method.

In Japan, tiled roofs are widely used in buildings with sloping roof structures. FIG. 7 shows a schematic view of the structure of a general tiled roof. As shown in FIG. 7, the tiled roof has a plurality of tile rails 2 extending in the lateral direction at regular intervals on the underlaying material 1, and the convex portion provided on the back surface of the tile 3 is used as the tile rail 2. It is constructed by hooking "hanging pier tile roofing". Two roof tiles overlap at most of the upper edge and the lower edge, and three roof tiles overlap at the right end and the left end of the upper edge and the lower edge.
Since the tiled roof has the drawback of being vulnerable to strong winds caused by typhoons, tornadoes, etc., the standard design and construction guidelines for tiled roofs (Non-Patent Document 1) were formulated in 2001. In a tiled roof that complies with this guideline, tiles or tiles and tiles are connected to each other by nails, screws, connections, etc.

Typhoon No. 15 in the first year of Reiwa caused great damage mainly in Chiba prefecture, but as a result of the site inspection, almost no damage was seen in the houses constructed according to the above guidelines. On the other hand, in houses that did not follow the above guidelines, not only roof tiles but also the roof itself was found to be scattered (Non-Patent Document 2).

Since houses are used for a long time, many houses over 20 years old remain. In addition, even if the building was built after 2001, there are many houses that have not been constructed in accordance with the above guidelines.
With global warming, it is expected that strong typhoons will continue to approach the Japanese archipelago in the future, and there is concern that roof damage will occur in houses that have not been constructed in accordance with these guidelines. Since it costs a lot of money to replace a tiled roof that does not comply with the guidelines with a structure that complies with the guidelines, an inexpensive and strong wind-resistant tile drop / scattering prevention method is required.

"Tile roof standard design and construction guidelines" Issued by: All Japan Tile Industry Federation, National Ceramic Tile Industry Association, National PC Gawara Association, August 13, 2001, revised March 3, 2006 "Reiwa 1st Year Typhoon No. 15 Roof Damage Inspection Report" General Incorporated Association All Japan Tile Industry Federation / National Ceramic Tile Industry Association Joint Investigation Team, October 2019

An object of the present invention is to prevent falling and scattering of roof tiles on an existing roof tiled roof.

The means for solving the problem of the present invention is as follows.
1. 1. A tile fall / scattering prevention method characterized by having a connecting process in which asphalt tape is attached in the vertical direction of the existing tiled roof and a plurality of continuous tiles are connected.
2. 1. The asphalt tape is attached on the narrow surface of the mountain portion of the roof tile. The roof tile fall / scattering prevention method described in.
3. 3. A smoothing process that forms a slope with sealing resin on the steps between tiles that are vertically adjacent to the existing tiled roof.
The connecting step of attaching asphalt tape so as to pass over the sealing resin,
1. Or 2. The roof tile fall / scattering prevention method described in.
4. After the connection step,
A tile fixing process in which a sealing resin is piled up so as to straddle the asphalt tape at a step portion between tiles adjacent in the vertical direction.
1. Or 2. The roof tile fall / scattering prevention method described in.
5. A roof tile fall / scattering prevention structure characterized by having asphalt tape that connects multiple roof tiles that are continuous in the vertical direction.

6. A drilling step of drilling holes above the roof tiles of tiles located at least at both ends of the tiles to which the asphalt tape is connected.
A fixing step of tightening a screw into the hole and fixing the asphalt tape to the tile.
1. ~ 4. The roof tile fall / scattering prevention method described in any of the above.
7. Further, it is characterized in that an injection step of injecting an adhesive into the hole portion is provided between the drilling step and the fixing step. The roof tile fall / scattering prevention method described in.
8. 1. It is characterized by comprising a sealing step of applying a sealing resin to the end portion of the asphalt tape and sealing the end portion with the sealing resin. ~ 4. The roof tile fall / scattering prevention method described in any of the above.
9. It has a sealing resin that forms a slope on the step between adjacent roof tiles in the vertical direction.
A plurality of roof tiles are connected by asphalt tape passing over the sealing resin.
Of the roof tiles to which the asphalt tape is connected, the roof tiles located at least at both ends have holes.
A roof tile fall / scattering prevention structure characterized in that the asphalt tape is fixed to a roof tile by a screw tightened in the hole.
10. Asphalt tape that connects multiple roof tiles that are continuous in the vertical direction,
A roof tile fall / scattering prevention structure characterized by having a sealing resin piled up so as to straddle the asphalt tape at a step portion between tiles adjacent in the vertical direction.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to prevent the falling and scattering of roof tiles on the existing roof tile roof inexpensively and quickly. INDUSTRIAL APPLICABILITY According to the present invention, damage to a tiled roof during a disaster such as an earthquake or a strong wind can be suppressed, and further, human and property damage caused by falling and scattered roof tiles can be suppressed. The tile falling / scattering prevention method of the present invention is a repair of an existing tiled roof, and since the tiles are not replaced, the amount of waste generated is extremely small. Asphalt tape has been used for waterproofing the roof of buildings for more than several decades, and has high reliability, durability, and weather resistance. By attaching the asphalt tape on the narrow surface of the mountain part of the roof tile, wrinkles are less likely to occur when the asphalt tape is attached, and the flow of rainwater on the roof is not obstructed. By covering the asphalt tape with a top coat, the asphalt tape can be protected and the end portion of the asphalt tape can be prevented from peeling off.

FIG. 6 is a schematic view of a tiled roof having a tile falling / scattering prevention structure, which is an example of the present invention. A partially enlarged view of a tiled roof having a tile falling / scattering prevention structure, which is an example of the present invention. FIG. 3 is a cross-sectional view of a tiled roof having a tile falling / scattering prevention structure, which is an example of the present invention. The figure explaining the process of the roof tile fall / scattering prevention method which is the 1st Embodiment of this invention. The figure explaining the process of the roof tile fall / scattering prevention method which is the 1st Embodiment of this invention. The figure explaining the process of the roof tile fall / scattering prevention method which is the 1st Embodiment of this invention. Schematic of the structure of a typical tiled roof. The figure explaining the process of the roof tile fall / scattering prevention method which is the 2nd Embodiment of this invention. The figure explaining the process of the roof tile fall / scattering prevention method which is the 2nd Embodiment of this invention. The figure explaining the process of the roof tile fall / scattering prevention method which is the 2nd Embodiment of this invention. The figure explaining the process of the roof tile fall / scattering prevention method which is the 2nd Embodiment of this invention.

-Roof tile fall / shatter prevention structure The roof tile fall / shatter prevention structure of the present invention has an asphalt tape that connects a plurality of roof tiles that are continuous in the vertical direction.
1 and 2 show a schematic view and a partially enlarged view of a tiled roof having a tile falling / scattering prevention structure, which is an example of the present invention, and FIG. 3 shows a cross-sectional view taken along the line AA'of FIG.
The roof tile fall / scattering prevention structure, which is an example of the present invention, has a sealing resin 4 that forms a slope at a step between adjacent roof tiles 3 in the vertical direction, and a plurality of sheets are provided by asphalt tape 6 that passes over the sealing resin 4. The roof tiles 3 are connected, and among the roof tiles to which the asphalt tape 6 is connected, the roof tiles 3A and 3B located at at least both ends have holes, and the screws 8A and 8B tightened in the holes provide the asphalt tape 6. It is characterized in that it is fixed to the tile rails 2A and 2B.
Further, in the roof tile fall / scattering prevention structure, which is an example, the asphalt tape 6 is attached on the primer 5 and covered with the top coat 7. Further, an adhesive 9 is injected into the hole, and the tile 3A, 3C, and 3E are adhered to each other, and the tile 3E and the tile rail 2A are adhered to each other by the adhesive 9 flowing out from the gap when the screw 8 is screwed.

-Roof tile fall / shatter prevention method The roof tile fall / shatter prevention method of the present invention is for constructing the roof tile fall / shatter prevention structure of the present invention.

-First Embodiment Hereinafter, the roof tile fall / shatter prevention method according to the first embodiment of the present invention will be described in order of steps for constructing the portion shown in FIG. 2 of the roof tile fall / shatter prevention structure which is an example described above. ..
"Smoothing process"
A slope is formed with the sealing resin 4 on the step between the tiles 3A and 3D adjacent to the existing tiled roof in the vertical direction (FIG. 4).
In the connecting step described later, the asphalt tape is attached on the sealing resin, but by forming a slope on the step between the roof tiles, the asphalt tape can be easily attached. Further, since the roof tiles adjacent to each other in the vertical direction are adhered to each other by the sealing resin, it is possible to prevent the roof tiles from being lifted by an earthquake, strong wind, or the like, and the asphalt tape from being peeled off accordingly. The sealing resin preferably has a plasticizer content of 5% by weight or less. If the plasticizer is contained in an amount of more than 5% by weight, the portion where the plasticizer has soaked into the roof tile may be discolored.
The sealing resin can be used without particular limitation as long as it can be adhered to the roof tile and cured to form a slope, and a commercially available resin can be appropriately used. For example, the roof tile guard construction method association "tile NP seal", Cemedine Co., Ltd. "stone seal" and the like can be mentioned.

"Connecting process"
Asphalt tape 6 is attached so as to pass over the sealing resin 4, and a plurality of consecutive roof tiles 3A to 3B are connected (FIG. 5). In this embodiment, before this connecting step, there is a primer coating step of applying the primer 5 to the portion to which the asphalt tape 6 is stuck.
The place where the asphalt tape is attached is not particularly limited, but it is preferable to attach it on the mountain part of the roof tile because it does not obstruct the flow of rainwater, and as shown in FIG. , The bending of the asphalt tape in the width direction is small, and the asphalt tape is less likely to wrinkle, which is more preferable.

The asphalt tape is preferably applied to all rows or every other row of vertically extending roof tiles. In addition, one end of the asphalt tape can be attached to the crown tile or onigawara of the ridge, and the asphalt tape can also be attached to the tile on another surface straddling the ridge.

The asphalt tape is a tape-like material having the same structure as the asphalt sheet used for waterproofing work and the like. Asphalt tape can be used as either a torch type that is burned with a flame and attached, or a self-adhesive type that has an adhesive layer. It is preferable to use an adhesive type. The width of the asphalt tape is not particularly limited as long as it is less than or equal to the width of the roof tile, but it is preferably 8 cm or less, more preferably 6 cm or less in order to be attached to the roof tile having peaks and valleys without wrinkles. It is preferably 5 cm or less, and more preferably 5 cm or less. Further, in order to follow the unevenness and attach the asphalt tape without wrinkles, the thickness of the asphalt tape is preferably 1.4 mm or less, more preferably 1.2 mm or less, and further preferably 1 mm or less. .. As the asphalt tape, for example, the roof tile guard construction method association "tile NP tape", Towa Kogyo Co., Ltd. "Kurtal sheet SH-80 anticorrosion" and the like can be preferably used. When applying a primer, a product recommended by the manufacturer can be used depending on the type of asphalt tape used. For example, the roof tile guard construction method association "tile NP tape primer" is preferably used. be able to.

"Top coat application process"
If necessary, a top coat 7 covering the asphalt tape 6 is applied (FIG. 6). This top coat coating step may be performed after the connecting step, or may be performed after the drilling step, the injection step, and the fixing step described later. The topcoat is applied over the asphalt tape, i.e., more extensively than the asphalt tape. Specifically, the top coat is preferably applied so as to protrude by 2 mm or more from the end portion of the asphalt tape. By covering the end portion of the asphalt tape with the top coat, it is possible to prevent the end portion of the asphalt tape from peeling off. As the type of top coat, a product recommended by the manufacturer or the like can be used depending on the type of asphalt tape used, but a fluorine-based or acrylic silicon-based top coat is preferable from the viewpoint of weather resistance. For example, when the roof tile guard construction method association "tile NP tape" is used as the asphalt tape, the roof tile guard construction method association "tile NP top" or the like can be preferably used. Further, the top coat is preferably colored in the same color as the roof tile.

"Punching process"
Of the tiles to which the asphalt tape is connected, holes are drilled above the tile rails of the tiles located at least at both ends. In this embodiment, the hole is formed in the portion where the three roof tiles 3A, 3C, and 3E overlap (FIG. 3). Further, in the present embodiment, the hole portion is perforated on the asphalt tape 6, but it can also be perforated at a place where the asphalt tape is not attached. In order to prevent vibration and noise during drilling and cracking of roof tiles, it is preferable to use a vibration-free drill for drilling. In addition, a so-called two-step digging can be performed by drilling a large-diameter shallow hole for accommodating a screw head or a decorative cap in the opening of the hole. After the drilling step, a cleaning step of blowing off cutting chips with an air blow or the like can be performed if necessary.

"Fixing process"
A screw 8A is tightened in the hole, and the asphalt tape 6 is fixed to the tile rail 2 (FIGS. 2 and 3). When a hole is drilled on the asphalt tape as in the present embodiment, it is preferable to tighten the screw through a washer or use a flanged screw. In addition, when a hole is made in a place where the asphalt tape is not attached, the screw can be tightened via a plate-shaped metal fitting or the like that holds down the asphalt tape, and the asphalt tape can be indirectly fixed by the plate-shaped metal fitting or the like. ..
It is preferable to use a screw having a nominal diameter (outer diameter including a thread) larger than the diameter of the hole because the tile to which the asphalt tape is attached can be firmly fastened. Further, the screw is preferably in the shape of a "wood screw" having a screw thread only on the tip end side of the shaft portion. By using wood screws, the tip of the shaft part with threads is firmly fixed to the roof tile, and the tiles corresponding to the parts without threads on the head side of the shaft part are pressed downward, so that the tiles can be used. Can be firmly fastened.

"Injection process"
If necessary, the adhesive 9 can be injected into the hole between the drilling step and the fixing step. The type of adhesive is not particularly limited as long as it can adhere the objects to be adhered to each other of the present invention, and is an epoxy adhesive, an acrylic adhesive, a silicone adhesive, a urethane adhesive, a polyester adhesive, etc. Can be used. Among these, epoxy-based adhesives, silicone-based adhesives, and silylated acrylate-based adhesives are preferable from the viewpoints of weather resistance, durability, and adhesiveness. As the adhesive, a commercially available adhesive can be appropriately used, and for example, Cemedine Co., Ltd. "EP48", "EXCEL I" and the like can be used.

The temperature of roof tiles changes to around 70 ° C in the daytime and around 20 ° C at night in the summer. The adhesive is preferably an elastic adhesive in order to prevent impact due to an earthquake, interfacial peeling due to expansion / contraction due to temperature change, and cracking of roof tiles. As the elastic adhesive, whichever is smaller, the elongation at the time of cutting or the elongation at the yield point measured under the condition of a temperature of 23 ° C. using a dumbbell-shaped No. 1 test piece having a thickness of 1 mm in accordance with JIS K6251. The value is preferably 20% or more.

In the present invention, the holes are not closed, and there is a gap between the roof tiles and between the roof tile located at the lowermost position and the roof tile rail. The adhesive preferably has a high viscosity so that it does not flow down from this gap due to the inclination of the roof. Specifically, a BH type viscometer (rotor No. 6) is used in accordance with JIS K6833-1. The viscosity at 23 ° C. and 20 rpm is preferably 1 Pa · s or more and 500 Pa · s or less, and more preferably 10 Pa · s or more and 200 Pa · s or less. Further, it is preferable to have sway denaturation because it has fluidity at the time of injection and it is difficult for it to flow out from the gap after injection. Specifically, it is preferable that the ratio of the viscosity at a rotation speed of 1 rpm to the viscosity at a rotation speed of 10 rpm (viscosity at 1 rpm / viscosity at 10 rpm) under the above conditions is 2 or more.

By injecting an adhesive into the hole, the space between the screw and the hole is filled with the adhesive, and it is possible to prevent rainwater or the like from penetrating downward from the hole. In addition, the adhesive is extruded by the screw and spreads around through the gaps in the holes. Then, the adhesive spread around the tiles adheres between the roof tiles and between the roof tiles and the roof tiles, so that the roof tiles can be fixed more firmly.

Furthermore, if necessary, perform a water resistant treatment process such as filling the hole with a water resistant putty, covering the head of the screw with a water resistant putty, etc., and a cosmetic process of fitting a decorative cap when two-step digging is performed. Can be done.

-Second Embodiment The tile falling / scattering prevention method according to the second embodiment of the present invention will be described below in order of steps.
"Primer process for resin"
The resin primer 10 is applied to the stepped portion between the tiles adjacent to each other in the vertical direction of the existing tiled roof (FIG. 8).
This step is optional, and is carried out when the sealing resin used in the tile fixing step described later and the tile to be constructed are incompatible with each other. The resin primer can be selected according to the sealing material to be used, and examples thereof include the roof tile guard construction method association "tile NP seal primer".
The resin primer is applied to both sides of the region to which the asphalt tape is attached in the connecting step described later. Therefore, when the asphalt tape is attached on the narrow surface of the mountain portion of the roof tile, it is applied not only to the stepped portion but also to the pasted end portion. In FIG. 8, the discolored portion of the roof tile is the portion to which the resin primer 10 is applied, and is applied to the stepped portion and the pasted closed portion. When the end of the asphalt tape is sealed with a sealing resin, a resin primer is also applied to the vicinity of the end of the asphalt tape.

"Connecting process"
Asphalt tape 6 is attached in the vertical direction of the existing roof tile, and a plurality of consecutive roof tiles are connected (FIG. 9). In addition, before the connecting step, it is also possible to have a primer coating step of applying a primer to a portion to which the asphalt tape 6 is stuck.
Asphalt tape is applied along the steps of adjacent roof tiles in the vertical direction. The asphalt tape is preferably applied to all rows or every other row of vertically extending roof tiles. In addition, one end of the asphalt tape can be attached to the crown tile or onigawara of the ridge, or the asphalt tape can be attached to the tile on another surface straddling the ridge. The asphalt tape is preferably attached on the mountain portion of the roof tile, and more preferably on the narrow surface of the mountain portion of the roof tile. Further, as the asphalt tape, the same as the description of the connecting step of the first embodiment can be used.

"Roof tile fixing process"
At the stepped portion between the tiles adjacent to each other in the vertical direction, the sealing resin 4 is piled up so as to cover the asphalt tape 6, and the tiles are fixed (FIG. 10).
By covering the stepped part with sealing resin so as to cover the asphalt tape, it is possible to prevent the tile from moving due to an earthquake or strong wind, and the movement of the tile causes the asphalt tape to wrinkle or the asphalt tape to peel off. It is possible to prevent it from happening. In order to fix the roof tile more firmly, it is preferable that the sealing resin is thickly piled up so as to form a slope at the stepped portion.
As the sealing resin, the same resin as that used in the smoothing step of the first embodiment can be used.

"Sealing process"
The sealing resin 4 is placed on the end of the asphalt tape, and the end is sealed with the sealing resin (FIG. 11).
Since the end of the tape can be fixed by simply sealing it with a sealing resin and it is not necessary to perforate the roof tile as in the first embodiment, noise, vibration, and dust generation can be suppressed, and the generation of dust can be suppressed. Cost reduction and shortening of construction period can be realized.

"Top coat application process"
If necessary, a top coat covering the asphalt tape 6 is applied. The top coat is also applied on the sealing resin 4 that has been piled up in the tile fixing step and the sealing step. The top coat coating step may be performed after the tile fixing step and may be performed before the sealing step.
The topcoat is applied over the asphalt tape, i.e., more extensively than the asphalt tape. Specifically, the top coat is preferably applied so as to protrude by 2 mm or more from the end portion of the asphalt tape. By covering the end portion of the asphalt tape with the top coat, it is possible to prevent the end portion of the asphalt tape from peeling off. As the type of top coat, a product recommended by the manufacturer or the like can be used depending on the type of asphalt tape used, but a fluorine-based or acrylic silicon-based top coat is preferable from the viewpoint of weather resistance. Further, the top coat is preferably colored in the same color as the roof tile.

The roof tile fall / scattering prevention structure and the roof tile falling / scattering prevention method described above are examples of embodiments of the present invention, and the present invention is not limited to this embodiment. For example, either the drilling step, the fixing step, the injection step, or the sealing step may be performed.

1 Underlaying material 2 Tile crosspiece 3 Tile 4 Sealing resin 5 Primer 6 Asphalt tape 7 Top coat 8 Screw 9 Adhesive 10 Resin primer

Claims (5)

A tile fall / scattering prevention method characterized by having a connecting process in which asphalt tape is attached in the vertical direction of the existing tiled roof and a plurality of continuous tiles are connected. The roof tile fall / scattering prevention method according to claim 1, wherein the asphalt tape is attached on a narrow surface of a mountain portion of the roof tile. A smoothing process that forms a slope with sealing resin on the steps between tiles that are vertically adjacent to the existing tiled roof.
The connecting step of attaching asphalt tape so as to pass over the sealing resin,
The roof tile fall / scattering prevention method according to claim 1 or 2, wherein the method is provided with. After the connection step,
A tile fixing process in which a sealing resin is piled up so as to straddle the asphalt tape at a step portion between tiles adjacent in the vertical direction.
The roof tile fall / scattering prevention method according to claim 1 or 2, wherein the method is provided with. A roof tile fall / scattering prevention structure characterized by having asphalt tape that connects multiple roof tiles that are continuous in the vertical direction.

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