JP2017057668A - Waterproof construction method using tabular waterproof material, and tabular waterproof material used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof construction method that requires no skillful construction technique, makes it possible to perform construction efficiently in a short period while easily securing a uniform film thickness on a construction surface with an inclined substrate, and is capable of easily confirming that no air remains on the back side of a waterproof material.SOLUTION: A waterproof construction method includes at least: a first process of applying primer to a construction surface C to form a primer layer 20; a second process of applying a coating film waterproof material 1L on the primer layer; a third process that, before the coating film waterproof material's drying out, deposits a tabular waterproof material 11, which is previously molded so as to have predetermined thickness and size by using the same composition as that of the coating film waterproof material used in the second process, on the coating film waterproof material and includes a plurality of small holes 12; and a fourth process of pressing the tabular waterproof material from above to expose the coating film waterproof material 1L from the small holes to a surface. Thereby, the waterproof construction method forms a waterproof layer 10 on the back side of a tabular waterproof material, the waterproof layer having no risk of air being sealed and remaining.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a waterproof construction method for a building using a sheet-shaped waterproof material, and a sheet-shaped waterproof material used therefor, and more specifically, by using a pre-molded sheet-shaped waterproof material, a skilled construction technique can be obtained. The present invention relates to an improvement in a waterproof construction method that enables efficient construction in a short period of time to easily ensure a uniform film thickness.

  As one of the waterproofing methods for the surface of concrete frames such as roofs, verandas (balconies), parking lots, corridors, and pools in buildings such as buildings, condominiums, and detached houses, for example, waterproofing using a waterproof coating material The method is known. This coating waterproofing method is to apply a liquid waterproofing material to the ground with a brush, spatula, roller, etc., or to apply a filming and curing by spraying to form a seamless waterproof layer. .

  Conventional coating waterproofing methods include the steps of 1) applying a primer on the base, 2) applying a waterproof material on the primer, and 3) applying a top coat material on the waterproof material. It is common to finish through. Further, if necessary, a reinforcing material called a cloth or mesh is laid on the primer, and a waterproof material is applied thereon. In this coating film waterproofing method, urethane rubber is overwhelmingly used as a coating film waterproofing material, but other materials such as FRP, acrylic rubber, and rubber asphalt are also used.

  As a feature of such a waterproof coating construction method, a seamless waterproof film can be formed as described above, and therefore, the reliability of waterproofing is high. In addition, coating can be repeated and the coating thickness can be freely set, and the waterproof layer can have a flat and beautiful finish. Furthermore, since the waterproof layer is formed by using a liquid waterproof material, it is easy to become familiar with the shape of the base and can cope with a complicated shape.

  However, in the case of the conventional coating waterproofing method, it takes one day to apply and cure the primer including the cleaning of the base, and one day to apply and cure the waterproof material on the primer layer. Since it takes 1 day to apply and cure the top coat material on the waterproof layer, it requires a construction period of at least 3 days. In addition, when the construction site is outdoors, the work is likely to be influenced by the weather, temperature, etc., which may require a longer construction period. For this reason, the cost of the worker (artisan) increases, and in particular, there is a problem that it is difficult to secure the artisan during the busy season.

  Moreover, in the case of the conventional coating film waterproofing construction method, the construction efficiency on the construction surface having a gradient in the ground is extremely reduced as compared with the working surface in which the ground is horizontal. In other words, when a specified amount of waterproof material is applied to the work surface with a gradient in the base at the same time, sagging occurs until the waterproof material hardens, and the waterproof material flows downward, so the high film thickness is thin and low. Therefore, the initial gradient cannot be obtained. In addition, the portion with a small film thickness is likely to be prematurely deteriorated by ultraviolet rays or heat, and cannot follow the behavior of the ground caused by the expansion or contraction of the building due to an earthquake or a change in temperature, causing tears and cracks.

  Therefore, on the construction surface with a gradient in the base, in order to obtain a prescribed coating amount while ensuring a uniform film thickness, it is possible to respond by overcoating that repeats the process of applying a waterproof material as thin as not causing flow. It is common. However, since the next coating operation cannot be performed unless the waterproofing material previously applied is cured, over-coating takes a lot of time to form an appropriate waterproof layer, and the construction period becomes longer. It was an end.

  In addition, in order to ensure a uniform film thickness efficiently and easily, it is possible to apply a thick coating using a waterproof material with thixotropy. In order to finish flat with a uniform film thickness, skilled construction techniques are required.

  Therefore, as a coating film waterproofing construction method that can easily ensure a uniform film thickness even on a construction surface with a gradient in the base without requiring skilled construction techniques, and can perform construction efficiently in a short period of time, coating film waterproofing Several means using a material formed in advance into a sheet body have been proposed.

  For example, the first means has been previously proposed by the inventor of the present application, and a first step of applying an adhesive as a primer on a concrete frame, and a coating film on the adhesive A sheet body molded in advance using the waterproofing material composition itself, and having a predetermined thickness and provided with small holes having an outer diameter of 10 to 50 mm at intervals of 20 to 40 mm is placed. A second step of bonding, a third step of applying a waterproof coating material made of the same composition on the sheet material for preventing material, and a top coat agent is applied after the waterproofing coating material is dried It consists of a 4th process (refer patent document 1).

  The second means is to apply a primer to the floor surface of the construction site, and subsequently form an adhesive, and then spread a waterproof sheet made of a pre-formed top coat layer and urethane layer on the adhesive layer. Thus, a waterproof layer is formed on the floor surface (see Patent Document 2).

  However, in the first means (Patent Document 1), air is placed on the back side of the sheet body after the sheet body is placed on the adhesive or after the waterproof coating material is applied on the sheet body. Since there is no means for confirming / determining that the sheet does not remain, it is difficult to determine on the basis of whether or not air remains on the back side of the sheet. In addition, even if air is pushed out during the application of the waterproof coating material, the applied waterproof membrane material enters the small hole provided in the sheet body, so that the air outlet is blocked, and the sheet body There is a risk that air will not easily escape from the back side of the.

  On the other hand, in the second means (Patent Document 2), since the air holes are not provided in the waterproof sheet laid on the adhesive layer, when air remains on the back side of the sheet body, It is difficult to let the air escape, and there is a risk that the air is sealed on the back side of the waterproof sheet. Therefore, the bonding between the adhesive layer and the waterproof sheet becomes insufficient, and the waterproof sheet may be easily peeled off after drying.

JP 2007-16462 A JP 2014-31716 A

  The present invention has been made in view of the above circumstances, and does not require a skilled construction technique, and it can be applied efficiently in a short period of time while easily ensuring a uniform film thickness on a construction surface having a gradient in the base. It is another object of the present invention to provide a waterproof construction method capable of easily confirming that no air remains on the back side of the waterproof material.

  The waterproof construction method using the plate-shaped waterproof material according to the present invention includes a first step of forming a primer layer by applying a primer to the construction surface, and a first step of applying a waterproof coating material on the primer layer. Before the coating waterproofing material is dried in two steps, on top of that, using the same composition as the coating waterproofing material used in the second step, it is molded in advance to a predetermined thickness and size, and At least a third step of depositing a sheet-shaped waterproofing material having a plurality of small holes, and a fourth step of pressing the sheet-shaped waterproofing material from above and exposing the waterproofing coating material to the surface from the small holes. In addition, the waterproof layer is formed on the back side of the waterproof material so that there is no fear that it remains after the second to fourth steps.

  Further, the waterproof construction method of the present invention is the waterproof construction method described above, the second step is to apply a waterproof coating material to a part of the primer layer formed in the first step, and after the first step, A waterproof layer can be formed on the primer layer by repeatedly performing the second step to the fourth step a plurality of times.

  Moreover, the waterproof construction method of the present invention is any of the waterproof construction methods described above, and the third step can be reached without moving when the person who constructs the fourth step presses the waterproof sheet material from above. It is good also as what uses the sheet-like waterproof material shape | molded by the magnitude | size within the range.

  Further, the waterproof construction method of the present invention may be any one of the waterproof construction methods described above, and the third step may use a plate-shaped waterproof material integrally formed with a top coat layer on the surface. .

  Further, the waterproof construction method of the present invention is the waterproof construction method according to any one of the above, wherein the third step is to form a small hole having a diameter different from the diameter formed on the one surface side and the diameter formed on the other surface side. It is good also as what uses the plate-shaped waterproof material with which it is equipped.

  In the waterproof construction method of the present invention, in any one of the waterproof construction methods described above, it is preferable that the fourth step is performed so as to draw a cross shape on the plate-shaped waterproof material.

  Moreover, the sheet-shaped waterproofing material of the present invention is used in any one of the waterproofing construction methods described above, and at least a waterproofing layer formed in advance to a predetermined thickness and size using a urethane-based waterproofing material. And having a plurality of small holes penetrating from one surface side to the other surface side.

  Moreover, the plate-shaped waterproof material of the present invention may be the above-described plate-shaped waterproof material in which a top coat layer is integrally laminated on the surface of the waterproof layer. Furthermore, it is desirable that the top coat layer has a surface with an uneven surface.

  Moreover, the platy waterproof material of the present invention may be any one of the above-described platy waterproof materials, in which a reinforcing material is integrally laminated inside the waterproof layer.

  The waterproof construction method using the sheet-like waterproof material according to the present invention is such that the sheet-like waterproof material is deposited on the waterproof film material, and further, the sheet-like waterproof material is pressed from above, and the paint film is formed from the small holes. A step of exposing the waterproof material to the surface. Therefore, it is possible to easily determine that no air remains on the back side of the sheet-shaped waterproof material by confirming the waterproof coating material exposed from the small holes. That is, if air remains on the back side of the sheet-shaped waterproof material, when the sheet-shaped waterproof material is pressed from above, the air escapes first from the small holes and the waterproof coating material is not exposed to the surface of the small holes. However, if there is no air remaining on the back side of the sheet waterproof material, when the sheet waterproof material is pressed from above, the waterproof film on the back side of the sheet waterproof material is pushed out to reduce the size of the sheet waterproof material. It will be exposed on the surface of the hole. Thereby, the waterproof layer without the possibility that air may be sealed and remain on the back side of the waterproof material can be formed.

  Moreover, in the waterproof construction method of this invention, before a coating-film waterproof material dries, the process of depositing a plate-shaped waterproof material on it is provided. Therefore, the waterproof coating material applied on the primer layer functions as an adhesive, and the waterproof layer in which the waterproof coating material and the sheet waterproof material are integrated can be formed on the primer layer in close contact with each other. . In addition, since the sheet-shaped waterproofing material is formed using the same composition as the coating film waterproofing material, the bonding strength between the coating film waterproofing material and the sheet-shaped waterproofing material can be strengthened. .

  Furthermore, in the waterproof construction method of the present invention, after the first step of forming the primer layer, the second step of applying the waterproof coating material, the third step of applying the plate-like waterproof material, and the plate-like waterproof material The fourth step of holding down from above can be performed continuously without taking time. Therefore, it becomes possible to construct efficiently in a short period of time. That is, conventionally, after applying the waterproof coating material (second step), it is not possible to perform the next step until the waterproof coating material is cured. Since the sheet-shaped waterproofing material formed in a size is applied on the waterproofing coating material, the surface has already been cured, and the next fourth step can be subsequently performed.

It is a partial section perspective view showing the example of construction using the waterproof construction method concerning the present invention. It is a cross-sectional schematic diagram which demonstrates each process in the waterproof construction method which concerns on this invention one by one. FIG. 3 is a schematic cross-sectional view for sequentially explaining each step in the waterproof construction method according to the present invention, following FIG. 2. It is a plane schematic diagram explaining one example from the 2nd process to the 4th process in order in the waterproofing construction method concerning the present invention one by one. It is a cross-sectional schematic diagram explaining an example of the structure of the sheet-like waterproof material used at the 3rd process in the waterproofing construction method which concerns on this invention. It is a plane schematic diagram explaining an example of the 4th process in the waterproofing construction method concerning this invention. It is a partial section perspective view showing other examples of construction using the waterproof construction method concerning the present invention. It is a partial section perspective view showing other examples of construction using the waterproof construction method concerning the present invention.

Hereinafter, an example of an embodiment of a waterproof construction method using a plate-like waterproof material according to the present invention will be described based on the drawings.
The waterproof construction method according to the present invention can be used on concrete roofs such as rooftops, verandas (balconies), parking lots, basements, hallways, and pools in buildings such as buildings, condominiums, and detached houses. .

  Although the embodiments described below are preferred specific examples of the present invention, various technical limitations are applied. However, the scope of the present invention is described as being particularly limited in the following description. As long as it is not, it is not restricted to these forms.

<First Embodiment>
As shown in FIG. 1 thru | or FIG. 3, the waterproof construction method in this Embodiment is equipped with the following 4th process from the 1st process at least.
First, in the first step, the primer 2 is applied to the construction surface C to form the primer layer 20 (see FIG. 2A). That is, in the first step, first, the construction surface C is cleaned cleanly so that there are no pebbles or dust, and then the primer 2 is applied to the construction surface C by a roller, and this is cured and dried. Thus, the primer layer 20 is provided on the construction surface C.

  The primer 2 used in the first step is not particularly limited, and for example, known ones such as a one-part moisture-curing urethane resin, a two-part urethane resin, an epoxy resin, and an unsaturated polyester resin can be used.

Next, in the second step, a liquid coating waterproof material 1L is applied on the primer layer 20 (see FIG. 2B). This coating waterproof material 1L constitutes a part of the waterproof layer, but functions as an adhesive for joining the sheet-shaped waterproof material 11 used in the third step described later.
The waterproof coating material 1L used in the second step is not particularly limited, and, for example, a general room temperature curing urethane waterproof resin material can be used.

  Subsequently, in the third step, before the waterproof coating film 1L is dried and cured, the sheet-shaped waterproof material 11 is deposited thereon (see FIG. 2C). This sheet-shaped waterproofing material 11 is an already-cured waterproofing material molded in advance to a predetermined thickness and size using the same composition as the waterproofing coating material 1L used in the second step, from one side to the other side. A plurality of small holes 12.

  The plate-shaped waterproofing material 11 used in the third step has a predetermined thickness and size, but the thickness is not particularly limited, and the thickness required for the waterproof layer is, for example, 2 to 5 mm. Can do. Further, the size of the sheet-shaped waterproofing material 11 is not particularly limited. For example, the size within a range in which a person who constructs in the fourth process to be described later can work efficiently is 600 mm long × 1000 mm wide. can do. By setting it as such a magnitude | size, a worker can reach a spot on the spot without moving largely, and the operation | work which presses down the sheet-like waterproof material 11 from the top in a 4th process can be performed efficiently.

  The sheet-shaped waterproof material 11 is formed in advance in a factory or the like before construction, but the forming method is not particularly limited. Therefore, for example, an acrylic resin frame made with a recess having a predetermined depth and size is used, and the same composition as the waterproof coating 1L used in the second step is used in the frame. It is good also as what casts an object and shape | molds, and is good also as what apply | coats and shapes with a spraying machine. Further, the plate-shaped waterproofing material 11 may be formed in advance with a predetermined shape such as a rectangle, and may be appropriately cut according to the shape of the construction surface, or the frame body according to the design drawing. It may be produced and molded using this frame.

  Further, the small holes 12 provided in the plate-shaped waterproof material 11 may be provided after the plate-shaped waterproof material 11 is molded, or may be provided at the same time when the frame-shaped waterproof material is molded. In addition, the magnitude | size of the small hole 12 is not specifically limited, For example, it can be set as the outer diameter of 3-5 mm.

  Further, the plate-shaped waterproofing material 11 may be integrally laminated with a reinforcing material (not shown) called a cloth or a mesh inside if necessary. That is, the same composition as the waterproof coating film 1L used in the second step is used after laying a reinforcing material in the frame body using a frame body having a recess having a predetermined depth and size. It is good also as what casts a thing and casts.

  And a 4th process hold | suppresses the plate-shaped waterproofing material 11 from the top, and exposes the coating-film waterproofing material 1L to the surface from the small hole 12 (refer FIG. 3 (A)). That is, in the fourth step, as shown by the arrows in the figure, the sheet-shaped waterproofing material 11 deposited on the liquid coating waterproofing material 1L is rubbed with a rubber spatula or roller uniformly, By the pressing, the waterproof coating material 1L rises in the small holes 12 and is exposed on the surface of the sheet-shaped waterproofing material 11. Therefore, the waterproof film 1L applied in the second step is applied with a certain thickness so as to have fluidity on the primer layer 20.

  Further, in the fourth step, the waterproof coating material 1L exposed so as to protrude from the small holes 12 is scraped with a rubber spatula or the like so that the top coat material described later is uniformly applied. The surface is kept flat (see FIG. 3B).

  Thereafter, a top coat material for protecting the waterproof layer 10 from ultraviolet rays or the like is applied on the waterproof layer 10 composed of the waterproof coating material 1L and the plate-shaped waterproof material 11, and a top coat (surface protection) layer 30 is provided. (See FIG. 3C). The topcoat material is not particularly limited, and for example, a known material such as an acrylic urethane coating material or a silicon-modified acrylic urethane coating material can be used.

  Thus, in the waterproof construction method according to the present invention, it is easily determined that no air remains on the back side of the sheet-shaped waterproof material 11 by visually confirming the waterproof film 1L exposed from the small holes 12. The waterproof layer 10 (1L, 11) can be formed by the second process to the fourth process, in which air is not sealed and remains on the back side of the sheet-shaped waterproof material 11.

  Moreover, the waterproof construction method in the present invention can efficiently construct the waterproof layer 10 having a uniform film thickness in a short period even on a construction surface having a gradient in the ground without requiring a skilled construction technique. Moreover, the waterproof film 1L functions as an adhesive, and the waterproof layer 10 in which the waterproof film 11 and the waterproof sheet 11 are integrated on the primer layer 20 can be formed in close contact, Since the surface of the waterproof coating material 1L is immediately covered with the sheet-shaped waterproof material 11, it can be constructed without the risk of dust or insects adhering to the surface.

  In the fourth step, if the waterproof membrane 1L is not exposed from the small hole 12 even when the sheet waterproof material 11 is pressed, it is determined that air remains on the back side of the sheet waterproof material 11, By injecting the waterproof coating material 1L from the small holes 12, the waterproof layer 10 (1L, 11) in which air does not remain as much as possible can be formed on the back side of the sheet-shaped waterproof material 11.

  In the present invention, the coating film waterproofing material 1L in the second step may be applied to the entire surface of the primer layer 20 formed in the first step at a time, but a part thereof (predetermined partition region). It may be performed every time). That is, the waterproof layer 10 may be sequentially formed on the primer layer 20 little by little by repeatedly performing the second process to the fourth process a plurality of times after the first process.

  Specifically, as shown in FIG. 4, for example, in a narrow and wide construction place such as a veranda, the primer layer 20 is formed by applying the primer 2 to the construction surface C in the first step. Then, as a second step, the waterproof coating 1L-1 is applied only to a part of the primer layer 20 (see FIG. 4A). Under the present circumstances, the application | coating area | region of the coating-film waterproofing material 1L-1 is the magnitude | size in the range which a construction person (craftsman) can work efficiently, for example, the depth of a veranda x the length of a construction person (craftsman) arm It is desirable to be within the range.

  Next, as a third step, before the applied waterproofing film 1L-1 is dried and cured, the sheet-shaped waterproofing material 11-1 is deposited thereon (see FIG. 4B). At this time, the plate-shaped waterproofing material 11-1 has the same size as the application region of the applied waterproofing membrane 1L-1.

In other words, the application area is determined in accordance with the size of the sheet-shaped waterproof material 11-1 that is preliminarily molded to a size within the range where the worker can efficiently work, and is applied onto the primer layer 20 in the second step. It is assumed that the waterproof membrane 1L-1 is applied.
And as a 4th process, the plate-shaped waterproof material 11-1 to which it adhered is hold | suppressed from the top, and the coating-film waterproof material 1L-1 is exposed to the surface from the small hole (not shown).

Subsequently, as the second step, the waterproof coating material 1L-2 is applied to the other part of the primer layer 20 (see FIG. 4C). Next, as the third step, before the applied waterproofing membrane 1L-2 is dried and cured, another plate-like waterproofing material 11-2 is deposited thereon (see FIG. 4D). And as a 4th process, the plate-shaped waterproof material 11-2 which adhered is pressed down from the top, and the coating-film waterproof material 1L-2 is exposed to the surface from the small hole (not shown).
Henceforth, as shown with the solid line arrow in a figure, it shall repeat from a 2nd process to a 4th process with respect to the whole surface of the primer layer 20. FIG.

  Thereby, a person who constructs can reach the spot without moving greatly, and the second process to the fourth process can be performed efficiently. Such a construction method is effective in an elongated construction place, for example, a veranda (balcony).

  In the present invention, the sheet-shaped waterproofing material 11 used in the third step may have a small hole 12 having the same diameter formed on one side and the diameter formed on the other side. It is good also as what has the small hole 12 from which the magnitude | size of the diameter formed in this and the diameter formed in the other surface side differs. Specifically, for example, as shown in FIG. 5, it is formed on the other surface (back surface) 11b side from the diameter D1 formed on the one surface (front surface) 11a side of the small hole 12 provided in the plate-shaped waterproof material 11. The made diameter D2 can be large.

  As a result, the area of the back side of the sheet-shaped waterproof material 11 is slightly small and the area where air remains is reduced, and when the sheet-shaped waterproof material 11 is pressed in the fourth step, the air on the back side of the sheet-shaped waterproof material 11 Can be easily removed from the small hole 12.

  In the present invention, pressing the sheet waterproof material 11 in the fourth step, that is, how to press the sheet waterproof material 11 using a rubber spatula or a roller, for example, as shown by a solid line arrow in FIG. It is good to carry out so that a cross shape may be drawn on the plate-shaped waterproofing material 11. FIG.

  Thereby, the sheet-shaped waterproofing material 11 can be efficiently and uniformly pressed, there is no region that can be forgotten to be pressed, and air can be reliably pushed out from the back side of the sheet-shaped waterproofing material 11 and extracted from the small holes. .

<Second Embodiment>
In the invention, it is also possible to efficiently form a topcoat layer (surface protection) on the waterproof layer. That is, the structure of the sheet-like waterproof material used in the third step is different from the first embodiment described above.
In each of the other embodiments described below, the description will focus on the parts that are different from the first embodiment described above. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Unless otherwise specified, the same components are assumed to be the same.

  In the present embodiment, as shown in FIG. 7, in the first step, the primer 2 is applied to the construction surface C to form the primer layer 20, and then in the second step, the liquid is formed on the primer layer 20. Up to the step of applying the coating film waterproofing material 1L is the same as the first embodiment described above.

  In the third step, the sheet-shaped waterproofing material 21 having the top coat layer 30 on the surface and integrally formed in advance is deposited on the waterproofing material 1L before it is dried and cured. That is, the sheet-shaped waterproofing material 21 used in the third step in the present embodiment has a top coat on the surface of the already-cured waterproofing material 1S formed using the same composition as the waterproof coating material 1L used in the second step. The layer 30 is integrally laminated, and is previously formed to have a predetermined thickness and size, and includes a plurality of small holes 22... 22 penetrating from one surface side to the other surface side. is there.

  The method for forming the sheet waterproof material 21 is not particularly limited. Therefore, after using a frame made to have a recess having a predetermined depth and size, the topcoat material is poured first and molded, and then the same as the waterproof coating material 1L used in the second step The top coat layer 30 and the already cured waterproof material 1S may be integrally laminated, or may be applied and molded by a spraying machine.

  Then, in the fourth step, as in the first embodiment described above, the waterproof sheet material 21 is pressed from the small hole 22 by pressing the sheet waterproof material 21 using a rubber spatula or roller. It is to be exposed to. Thereby, the topcoat layer 30 can be provided on the waterproof layer 10 composed of the waterproof coating material 1L and the already-cured waterproof material 1S.

  Thus, by forming the sheet-shaped waterproof material 21 integrally including the top coat layer 30 in advance, it is possible to perform a short-term without requiring a step of applying the top coat material on the waterproof layer 10 at the construction site. Waterproof construction can be completed efficiently.

<Third embodiment>
In the invention, it is also possible to efficiently form a topcoat layer having a surface with irregularities. That is, the structure of the sheet-like waterproof material used in the third step is different from the above-described second embodiment.

  In the present embodiment, as shown in FIG. 8, after the primer 2 is applied to the construction surface C to form the primer layer 20 in the first step, the primer layer 20 is liquid on the second step. Up to the step of applying the coating film waterproofing material 1L is the same as the first embodiment described above.

  In the third step, the sheet-shaped waterproofing material 31 integrally formed in advance with the uneven-coated topcoat layer 40 whose surface has been subjected to unevenness processing, before the coating waterproofing material 1L is dried and cured, Deposit on top. That is, the plate-shaped waterproofing material 31 used in the third step in the present embodiment has unevenness on the surface of the already-cured waterproofing material 1S formed using the same composition as the coating waterproofing material 1L used in the second step. The top coat layer 40 is integrally laminated, and has a plurality of small holes 32, 32 formed in advance to a predetermined thickness and size and penetrating from one side to the other side. Is.

  The method for forming the sheet waterproof material 31 is not particularly limited. Therefore, when processing unevenness such as non-slip on the surface, a top body made of a frame body having a recess having a predetermined depth and size, for example, an aggregate added to the frame body Is cast (or sprayed) first, and then the same composition as the waterproof coating film 1L used in the second step is cast onto the top to form the uneven top coat layer 40 and the already cured waterproofing. The material 1S may be integrally laminated.

  Then, in the fourth step, as in the first embodiment described above, the sheet waterproof material 31 is pressed using a rubber spatula or roller, and the coating waterproof material 1L is surfaced from the small hole 32. It is to be exposed to. Thereby, the uneven | corrugated topcoat layer 40 can be provided on the waterproof layer 10 which consists of the waterproof coating material 1L and the already-cured waterproof material 1S.

  In this way, by forming in advance the plate-shaped waterproofing material 31 that is integrally provided with the uneven topcoat layer 40, it is not necessary to apply a topcoat material on the waterproofing layer 10 at the construction site. The waterproof construction can be completed efficiently in a short period of time. Moreover, it is possible to impart an anti-slip effect, an effect that rainwater or the like flows without draining, and a decorative effect, etc. by the unevenness processing.

  In addition, the concave and convex processing uses a frame body prepared by giving a concave and convex pattern that will exhibit a desired function in advance on the bottom surface, and after casting the top coat material first, it is used in the second step. It is good also as what casts the same composition as 1 L of waterproofing membranes, and casts it later.

  In the above-described embodiment, the planar construction surface has been described. However, the present invention can be applied to roofs or verandas (balconies) of buildings where parapets (rising portions) are provided on the periphery of the foundation. ), Waterproof structures such as parking lots, basements, corridors, pools, etc. can be similarly applied.

  C Construction surface, 1L paint film waterproofing material, 11, 21, 31 Plate-like prevention material, 1S Pre-cured waterproofing material 10 Waterproof layer, 12, 22 Small hole, 2 Primer, 20 Primer layer, 3 Top coat material, 30 Top coat Layer, 40 Top coat layer with unevenness.

Claims (10)

A first step of applying a primer to the construction surface to form a primer layer;
A second step of applying a waterproof coating material on the primer layer;
Before the film waterproofing material is dried, it is molded in advance to a predetermined thickness and size using the same composition as the film waterproofing material used in the second step, and a plurality of small holes A third step of applying a sheet-shaped waterproof material comprising:
A fourth step in which the waterproof sheet material is pressed from above and the waterproof film material is exposed on the surface from the small holes;
Comprising at least
A waterproof construction method using a sheet-shaped waterproof material, characterized in that a waterproof layer without air remaining on the back side of the waterproof material is formed by the second process to the fourth process. In the second step, a waterproof coating material is applied to a part of the primer layer formed in the first step.
The waterproof construction method according to claim 1, wherein a waterproof layer is formed on the primer layer by repeatedly performing the second step to the fourth step a plurality of times after the first step.   The third step uses a sheet-shaped waterproofing material formed in a size within a range that can be reached without moving when the person who constructs the fourth step presses the sheet-shaped waterproofing material from above. The waterproof construction method according to claim 1 or 2, characterized in that:   The waterproof construction method according to any one of claims 1 to 3, wherein the third step uses a sheet-shaped waterproof material integrally formed with a top coat layer on the surface. .   5. The third step uses a sheet-shaped waterproofing material having small holes having different diameters formed on one side and on the other side. The waterproof construction method according to any one of the above.   The waterproof construction method according to claim 1, wherein the fourth step is performed so as to draw a cross shape on the plate-shaped waterproof material. A sheet-like waterproof material used in the waterproof construction method according to any one of claims 1 to 6,
A plate-shaped waterproof material comprising at least a waterproof layer formed in advance to a predetermined thickness and size using a urethane-based waterproof resin material, and a plurality of small holes penetrating from one surface side to the other surface side.   The plate-like waterproof material according to claim 7, wherein a top coat layer is integrally laminated on the surface of the waterproof layer.   The plate-like waterproof material according to claim 8, wherein the top coat layer has an uneven surface.   The plate-like waterproof material according to any one of claims 7 to 9, wherein a reinforcing material is integrally laminated inside the waterproof layer.

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