JP4068394B2 - Roof finishing material and roofing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roof finishing material laid on the surface of a sloped roof of a building and a roofing structure using the same, and more particularly to an asphalt single or incombustible single having an adhesive layer formed in advance and a roofing structure using these.
[0002]
[Prior art]
The so-called single as a roof finishing material has conventionally been made of an asphalt single in which glass fiber of the base material is impregnated with asphalt and colored sand or the like is pressure-bonded on the surface, and an inorganic filler and a resin material on both sides of the glass fiber of the base material. There is a non-combustible single etc. in which a mixed layer is formed and mineral sand is pressed on the surface. These roof finishes are attached using a combination of nailing and an adhesive in the case of a wooden base, and an adhesive if the base is not suitable for nailing.
[0003]
Single is thinner and lighter than cement-based and ceramic braids, and it has thermoplasticity, so it is flexible by slight heating, so it is well suited to deformed substrates such as curved substrates. Has the advantage of being usable. In addition, since a mineral layer such as crushed stone particles and sand is formed on the surface, there are also advantages such as excellent weather resistance.
[0004]
Conventionally, as this type of single, for example, those shown in FIGS. 7A, 7B, and 7C are known. In FIG. 7 (a), a surface layer 3 formed by pressure bonding colored sand or the like is formed on the surface of a single 1 having a base layer 2 formed by impregnating glass fibers with asphalt. Such single 1 roofing is performed by applying molten asphalt on the back surface of the single 1 at the construction site and sequentially laying it on the roof base from the downstream side in the gradient direction.
[0005]
In the single shown in FIG. 7B, an adhesive layer 4 made of straight asphalt is formed at a predetermined position of the surface layer 3 of the single 1 shown in FIG. A film 5 that abuts on and protects the adhesive layer 4 when the back surface and the surface layer 3 are joined is stretched. In the construction, the singles on the downstream side are laid so that the singles on the downstream side are overlapped with each other through the adhesive layer 4 so as to overlap half or more of the singles on the upstream side.
[0006]
The single shown in FIG. 7C has a self-adhesive pressure-sensitive adhesive layer 6 formed on the back end portion of the single 1 shown in FIG. A protective sheet 7 to be peeled is attached. At the time of construction, the protective sheet 7 is peeled off and roofing is performed sequentially as described above.
[0007]
[Problems to be solved by the invention]
However, the conventional single has the following disadvantages. That is, in the structure shown in FIG. 7 (a), a construction method in which molten asphalt is applied to the back of the single at the construction site and fixed to the roof base is common, and the construction efficiency is poor, and the single may be soiled with asphalt. In addition to the inconvenience, there was a risk of using hot asphalt.
[0008]
Further, in the case shown in FIG. 7B, the adhesive layer is formed of straight asphalt, which is called a so-called self-sealing. For example, the adhesive effect is obtained when a temperature environment of 60 degrees Celsius or more continues for a predetermined time. The adhesiveness in the initial stage of construction or in a low temperature environment cannot be expected.
[0009]
Furthermore, what is shown in FIG. 7 (c) needs to work after peeling off the protective sheet 7 in construction, and there is a difficulty in construction efficiency, and the protective sheet 7 is generated in large quantities as waste to be treated. There's a problem.
[0010]
On the other hand, it is necessary to fix the single to the groundwork by fixing it at two locations above and below the single. The top is to prevent falling off from the ground, and the bottom is to overlap the wind. The lower single was fixed.
And, for example, in the case of a concrete base that cannot be nailed, the single upper part is fixed to the base by applying molten asphalt, asphalt adhesive, solvent-type adhesive, etc. to the required location at the construction site. ing.
[0011]
However, the molten asphalt is a high-heat liquid, and there are problems such as safety and contamination due to dripping of the molten asphalt onto a single in the construction site having a gradient.
In addition, the single overlapped portion below the single is fixed with an asphalt adhesive, but the asphalt used for this is a straight material, so a predetermined adhesive force cannot be obtained in a low temperature environment, and the nail There were times when it was forced to strike, which was a factor that hindered construction efficiency.
[0012]
In contrast to molten asphalt and asphalt adhesives, in the case of a solvent-type adhesive, the above inconvenience can be avoided, but a new problem occurs. That is, until the solvent volatilizes, it does not cure and an adhesive force cannot be obtained. Therefore. In the case of construction on a steep roof, the roofing material will fall off until it hardens, so nailing and other fixing means must be used in combination.
[0013]
[Means for Solving the Problems]
The present invention comprises a base portion and a tab formed by pressure-bonding an inorganic layer formed of sand pieces having a flat shape on both front and back surfaces, and the tab is superimposed on the base portion to be joined to the roof base portion when laying. In roof finishing materials consisting of asphalt singles or non-combustible singles that sequentially form roofing,
Modified asphalt type on any single back surface, in the vicinity of the tip of the tab and at a predetermined position of the base part, in which the adhesive effect is less affected by the outside air temperature (butyl rubber modified asphalt, SBS rubber modified asphalt, etc.) A pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive is used to form a pressure-sensitive adhesive layer that adheres to the roof base and the single surface, and a release sheet is affixed adjacent to both pressure-sensitive adhesive layers. Solves the above-mentioned conventional problems by providing a roof finishing material in which the surface of each pressure-sensitive adhesive layer is set to cover the surface of each pressure-sensitive adhesive layer at the time of superposition with the single back surfaces facing each other. It is something to try.
[0014]
Further, in the above-mentioned roof finishing material, the sand pieces having a flat shape are formed from a tuff shale having a laminated structure in a thin layer, and the adhesive layer on the back surface of the tab is continuous from one end to the other end of the tab. The base adhesive material layer may be formed on the back surface of the base, and the base adhesive material layer may be a continuous linear belt from one end to the other end of the base.
[0015]
Furthermore, the present invention is a roofing structure by the roof finishing material according to the above, and the roof finishing material on the downstream side in the gradient direction in which the base is fixed to the roof base part via the base adhesive layer, and the downstream side It is composed of a roof finishing material on the upstream side in the gradient direction in which the base is fixed to the roof base through the adhesive layer on the back surface of the tab, and the base is fixed to the roof base through the base adhesive layer. A roofing structure in which roof finishing materials are laid sequentially from the downstream side in the gradient direction to the upstream side is provided to solve the above-described conventional problems.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a back view of an asphalt single as a roof finishing material according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG.
In the figure, 11 is a well-known asphalt single, and this asphalt single 11 formed in a flat plate shape includes a core layer portion 12 in which a flexible base material such as glass fiber is impregnated and coated, and the core layer. It consists of a surface layer 13 and a back surface layer 14 formed on both sides of the part 12, respectively, and comprises a base 15 joined to the roof base when laying and a tab 16 formed integrally therewith. In the sloped roof, the base 15 of the downstream asphalt single 11 is laid so that the tabs 16 of the upstream asphalt single 11 overlap each other.
[0017]
On the back surface of the asphalt single 11, a release sheet 17 is formed at a predetermined position of the base 15, and an adhesive layer 18 is formed near the lower end of the tab 16. As shown in FIG. 3, the peeling sheet 17 covers the adhesive layer 18 to prevent adhesion when the roof finishing materials are overlapped with the back surfaces of the roof finishing materials facing each other. It is pasted at the position. The singles 11 and 11 stacked in this way can be easily peeled off due to the peelability of the release sheet 17.
The pressure-sensitive adhesive layer 18 is selected from a modified asphalt-based adhesive (butyl rubber-modified asphalt, SBS-based rubber modified asphalt, etc.) pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive whose adhesive effect is less affected by the outside air temperature.
[0018]
FIG. 4 is a back view of an asphalt single as a roof finishing material according to the second embodiment of the present invention.
In this embodiment, a pair of pressure-sensitive adhesive layers and a release sheet are provided on the back surface of the single 11. That is, an adhesive layer 18 is formed near the tip of the tab 11 of the single 11, and an adhesive layer 19 is formed at a predetermined position of the base portion 15 of the single 11. And the release sheets 20 and 20 are stuck adjacent to each said adhesive layer 18 and 19. FIG. Other configurations are the same as those in the first embodiment.
[0019]
And as for the formation position of each adhesive layer 18 and 19 and peeling sheet 20 and 20, as shown in FIG. It is set so that the release sheets 20 and 20 cover the surface. By being able to superimpose in this way, the collection, packing, transportation, and handling at the construction site of the single 11 becomes extremely easy. The stacked singles 11 and 11 can be easily peeled off due to the peelability of the release sheet 17.
As in the above-described embodiment, the adhesive layers 18 and 19 are modified asphalt-based adhesives (butyl rubber modified asphalt, SBS rubber modified asphalt, etc.) It is selected from acrylic adhesives.
[0020]
FIG. 6 is a partial cross-sectional side view showing a roofing structure with a single 11 according to the second embodiment. In the figure, reference numeral 21 denotes a base part in a sloped roof of a building, and roofing using the single 11 is performed on the base part 21 from the eaves edge toward the upstream in the slope direction by a known process. That is, first, the downstream single 11 (left end in the figure) is directly fixed to the base portion 21 by the adhesive layer 18 at the front end and the adhesive layer 19 at the rear end. Next, the most upstream single 11 (middle in the figure) tab is fixed by the adhesive layer 18 formed on the back surface so as to cover the surface of the fixed base 11 of the single 11, while the back surface of the base 11 It fixes directly to the base part 21 with the adhesive layer 19 currently formed. Similarly, the upstream single 11 (right side in the figure) is fixed, and then the roofing operation is performed by the desired number of singles 11 in the same procedure. Thus, in this roofing structure, since each single 11 is directly fixed to the base part, it is optimal for roofing on the base where fixing with a nail is difficult.
[0021]
In each of the above embodiments, the inorganic layer formed on the surface by pressure bonding is composed of a slate sand piece having a flat shape. Since this slate sand piece is obtained from tuff or shale having a laminated structure in the form of a lens or thin layer, each piece is flat compared to the mineral sand (colored sand) that is usually used. In roofing, when the upstream tab is overlapped and joined to the base surface of the single downstream side, the adhesive to the surface layer 13 at the base 15 of the adhesive layer on the back surface of the tab becomes stronger.
【The invention's effect】
The present invention can perform the roofing operation with high efficiency without causing waste such as a conventional release film on site, and without fouling the roof finishing material by the above-described configuration and operation. In addition, it can be applied to foundations that are difficult to fix with nails and the like, and the accumulation, packing, and transportation of roof finishing materials are not damaged by the adhesive layer.
[Brief description of the drawings]
FIG. 1 is a rear view of a roof finishing material according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is an explanatory view showing a state in which the back surfaces of the roof finishing material shown in FIG.
FIG. 4 is a back view of a roof finishing material according to a second embodiment of the present invention.
FIG. 5 is an explanatory view showing a state in which the back surfaces of the roof finishing material shown in FIG. 4 are overlapped with each other.
6 is a partial cross-sectional side view of the single roofing structure shown in FIG. 4. FIG.
FIG. 7 is a cross-sectional view showing a conventional technique.
[Explanation of symbols]
11. . . . . . Roof finishing material (asphalt single)
12 . . . . . Core layer part 13. . . . . . Surface layer 14. . . . . . Back layer 15. . . . . . Base 16. . . . . . Tab 17. . . . . . Release sheet 18. . . . . . Pressure-sensitive adhesive layer 19. . . . . . Pressure-sensitive adhesive layer 20. . . . . . Release sheet

Claims (3)

It is provided with a base portion and a tab formed by pressure-bonding an inorganic layer formed of sand pieces having a flat shape on both the front and back surfaces, and roofing is sequentially performed so that the tab is superimposed on the base portion to be joined to the roof base portion when laying. In roof finishing materials made of asphalt single or incombustible single
Modified asphalt type on any single back surface, in the vicinity of the tip of the tab and at a predetermined position of the base part, in which the adhesive effect is less affected by the outside air temperature (butyl rubber modified asphalt, SBS rubber modified asphalt, etc.) A pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive is used to form a pressure-sensitive adhesive layer that adheres to the roof base and the single surface, and a release sheet is affixed adjacent to both pressure-sensitive adhesive layers. Is a roofing finish characterized in that it is set so that the release sheet covers the surface of each pressure-sensitive adhesive layer when the single back surfaces of the single layers are overlapped with each other. The roof finishing material according to claim 1, wherein the sand pieces having a flat shape are made of a tuff shale having a laminated structure in a thin layer, and the adhesive layer on the back surface of the tab is from one end of the tab to the other end. A roof finishing material, characterized in that it is formed as a continuous straight belt-like portion, and a base adhesive layer is formed on the back surface of the base, and the base adhesive material layer is a straight belt-like portion continuous from one end to the other end of the base. A roofing structure with a roof finishing material according to claim 2, comprising a roof finishing material on the downstream side in the gradient direction in which a base is fixed to the roof base through the base adhesive layer, and a roof finishing material on the downstream side It consists of a roof finishing material on the upstream side in the gradient direction, with the base fixed to the roof base part through the adhesive layer on the back side of the tab and the base part fixed to the roof base part through the adhesive layer on the back surface of the tab. A roofing structure characterized by laying roof finishing materials sequentially upstream from the top.

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