Anti-hollowing method for plastered layer of flashing part of waterproof roll

Abstract

The invention discloses an anti-hollowing method for a plastered layer at a flashing part of a waterproof roll, which comprises the following steps of: firmly adhering the waterproof roll at the flashing part and a base layer in a hot melting manner, and heating the outer surface of the waterproof roll at the flashing part; and when the heating temperature reaches the melting point of the waterproof coiled material, medium-coarse sand is scattered on the outer surface of the coiled material at the flashing part, so that the waterproof coiled material of which the outer surface is fixedly provided with the medium-coarse sand is formed after cooling, the friction coefficient of the waterproof coiled material at the flashing part is improved, and meanwhile, alkali-resisting glass fiber gridding cloth is additionally arranged during plastering. The method is economical and practical, the hollowing and cracking risk of the plaster layer is greatly reduced, and secondary repair is avoided while the construction quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, in particular to a method for preventing hollowing of a plaster layer at a flooding portion of a waterproof coiled material. Background Art

[0002] At present, waterproofing membranes are widely used. The height of the membrane at the flashing part is generally 250mm higher than the finished surface of the building, and the surface layer is generally plastered with cement mortar. The surface of the waterproof membrane is very smooth, especially when the plastering is carried out at the flashing part. After being exposed to wind and sun, the plastering layer will have large hollows and cracks, or even fall off. After the problem occurs, it is repaired, and the construction effect according to the original method is not ideal. In order to effectively solve this problem, a method for preventing hollowing of the plastering layer at the flashing part of the waterproof membrane is proposed. Summary of the invention

[0003] In view of the above-mentioned problems, the present invention provides a method for preventing hollowing of the plaster layer at the flashing part of the waterproof membrane, which can effectively solve the technical problem that the plaster layer at the flashing part of the waterproof membrane in the background technology is prone to hollowing and cracking.

[0004] The present invention adopts the following technical solutions:

[0005] A method for preventing hollowing of a plaster layer at a flashing portion of a waterproof coiled material, comprising the following steps:

[0006] Use hot-melt method to firmly stick the waterproof membrane at the flashing part to the base layer at the flashing part;

[0007] The outer surface of the waterproof roll material at the flashing part is heated, and when the heating temperature reaches the melting point of the waterproof roll material, medium-coarse sand is sprinkled on the outer surface of the waterproof roll material at the flashing part, so as to form a waterproof roll material with medium-coarse sand fixed on the outer surface after cooling;

[0008] Carry out plastering construction on the outer surface of the waterproof membrane at the flashing area.

[0009] In some of the embodiments, the flashing base layer includes a roof panel and a parapet located above the roof panel, and a concrete fillet is provided at the junction of the parapet and the roof panel.

[0010] In some of the embodiments, a propane torch is used to heat the outer surface of the waterproof membrane at the flashing location using flame.

[0011] In some embodiments, the waterproof membrane is made of SBS.

[0012] In some embodiments, the step of plastering the outer surface of the waterproof membrane at the flashing location includes:

[0013] First apply base coat on the waterproof membrane at the flashing part, and then apply surface coat after a set time interval.

[0014] In some embodiments, the set time is greater than 12 hours.

[0015] In some of the embodiments, an alkali-resistant glass fiber mesh cloth is pressed into the surface during the plastering.

[0016] In some of the embodiments, after forming a waterproof membrane with medium-coarse sand fixed on the outer surface, an interface agent is applied to an area of ​​the outer surface of the waterproof membrane that is greater than 5 cm2 and is not provided with medium-coarse sand.

[0017] Compared with the prior art, the above invention has at least one of the following advantages or beneficial effects:

[0018] The invention discloses a method for preventing hollowing of a plaster layer at a flashing location of a waterproof coiled material. After the waterproof coiled material at the flashing location is firmly attached to a base layer by hot melting, the outer surface of the waterproof coiled material at the flashing location is heated, and when the heating temperature reaches the melting point of the waterproof coiled material, medium-coarse sand is sprinkled on the outer surface of the coiled material at the flashing location, so as to form a waterproof coiled material with medium-coarse sand fixed on the outer surface after cooling, thereby improving the friction coefficient of the waterproof coiled material at the flashing location, and at the same time, an alkali-resistant glass fiber mesh cloth is added during plastering. The method is economical and practical, greatly reduces the risk of hollowing and cracking of the plaster layer, and avoids secondary repairs while ensuring the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0020] Figure 1 It is a flow chart of a method for preventing hollowing of the plaster layer at the flooding part of the waterproof membrane in an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the anti-air-drum construction of the plaster layer at the flooding part of the waterproof membrane in the embodiment of the present invention;

[0022] In the figure: 1-roof panel; 2-parapet; 3-rounded corner; 4-waterproof membrane; 5-medium-coarse sand; 6-plaster layer; 7-alkali-resistant glass fiber mesh cloth. DETAILED DESCRIPTION

[0023] The present invention is further described below with reference to the accompanying drawings and specific embodiments, but is not intended to be a limitation of the present invention.

[0024] like Figure 1 and 2As shown, the present invention discloses a method for preventing hollowing of the plaster layer at the flashing part of a waterproof coiled material. Specifically, the method comprises the following steps:

[0025] Step S1, using hot-melt method to firmly adhere the waterproof membrane 4 at the flashing part to the base layer at the flashing part.

[0026] The base layer of the flashing part includes a roof panel 1 and a parapet 2 located on the roof panel 1, and a concrete fillet 3 is provided at the junction of the parapet 2 and the roof panel 1.

[0027] Step S2, using a propane spray gun to heat the outer surface of the waterproof coiled material 4 at the flashing part with a flame, and when the heating temperature reaches the melting point of the waterproof coiled material 4, medium-coarse sand 5 is sprinkled on the outer surface of the waterproof coiled material 4 at the flashing part, so as to form a waterproof coiled material 4 with the medium-coarse sand 5 fixed on the outer surface after cooling. The material of the waterproof coiled material 4 is SBS. Since the melting point of SBS is 90°~110°, the medium-coarse sand 5 is immediately sprinkled on the outer surface of the waterproof coiled material 4 at the flashing part when the heating temperature reaches 90°~110°; generally speaking, since the flame temperature of the propane spray gun is very high, it can generally reach the melting point of the waterproof coiled material 4 very quickly, so the medium-coarse sand 5 can be sprinkled on the outer surface of the waterproof coiled material 4 at the flashing part immediately after the propane spray gun is heated; forming an integrated medium-coarse sand 5 on the outer surface of the waterproof coiled material 4 at the flashing part can improve the adhesion performance between the plaster layer 6 at the flashing part and the waterproof coiled material 4.

[0028] Step S3, plastering the outer surface of the waterproof membrane 4 at the flooding position to form a Figure 2 The structure shown.

[0029] Specifically, the steps of plastering the outer surface of the waterproof membrane 4 at the flashing part include:

[0030] First, apply the base mortar on the waterproof membrane 4 at the flashing part, and then apply the surface mortar after an interval of more than 12 hours, and press the alkali-resistant glass fiber mesh cloth 7 when applying the surface mortar.

[0031] In this embodiment, after forming a waterproof membrane 4 with medium-coarse sand 5 fixed on the outer surface, an interface agent is applied to the area of ​​the outer surface of the waterproof membrane 4 where the medium-coarse sand 5 is not set and the area is greater than 5 cm², so as to further improve the adhesion performance between the plaster layer 6 and the waterproof membrane 4 at the flashing part.

[0032] In summary, the method for preventing hollowing of the plaster layer at the flooding part of the waterproof membrane provided by the present invention starts from improving the adhesion of the base layer and the crack resistance of the surface layer, and takes dual measures to prevent hollowing and cracking of the mortar layer, thereby greatly reducing the hollowing and cracking phenomenon of the plaster layer at the flooding part of the waterproof membrane, thereby ensuring the construction quality; and the method is more economical and greatly reduces the number of later repairs.

[0033] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0034] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for preventing hollowing of the plaster layer at the flooding part of a waterproof coiled material, characterized in that: The steps include: Use hot-melt method to firmly stick the waterproof membrane at the flashing part to the base layer at the flashing part; The outer surface of the waterproof roll material at the flashing part is heated, and when the heating temperature reaches the melting point of the waterproof roll material, medium-coarse sand is sprinkled on the outer surface of the waterproof roll material at the flashing part, so as to form a waterproof roll material with medium-coarse sand fixed on the outer surface after cooling; Carry out plastering construction on the outer surface of the waterproof membrane at the flashing area.

2. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 1, characterized in that: The base layer of the flashing part includes a roof panel and a parapet wall located above the roof panel, and a concrete fillet is arranged at the junction of the parapet wall and the roof panel.

3. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 1, characterized in that: A propane spray gun is used to heat the outer surface of the waterproof membrane at the flashing area with a flame.

4. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 1, characterized in that: The material of the waterproof coiled material is SBS.

5. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 1, characterized in that: The steps for plastering the outer surface of the waterproof membrane at the flashing part include: First apply base coat on the waterproof membrane at the flashing part, and then apply surface coat after a set time interval.

6. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 5, characterized in that: The set time is greater than 12 hours.

7. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 1, characterized in that: Press in alkali-resistant glass fiber mesh cloth when applying the surface plaster.

8. The method for preventing hollowing of the plaster layer at the flooding part of waterproof coiled material according to claim 1, characterized in that: After forming a waterproof coiled material with medium-coarse sand fixed on the outer surface, an interface agent is applied to an area of ​​the outer surface of the waterproof coiled material that is greater than 5 cm2 and is not provided with medium-coarse sand.

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