Waterproof structure and construction method of roof parapet

Abstract

The present invention proposes a waterproof structure and construction method for a roof parapet, comprising a parapet wall body and a building roof that intersect vertically, wherein the top surface of the building roof and the inner facade of the parapet wall are paved with waterproof membranes, a portion of the parapet wall body where the waterproof membrane is paved is provided with a fixed groove, a protruding retaining strip is provided at a position corresponding to the top of the waterproof membrane, a vertical protective molding surface is provided on the outer surface of the waterproof membrane, a horizontal protective layer is provided on the outer surface of the waterproof membrane paved on the building roof, and the width of the protruding retaining strip is greater than the thickness of the vertical protective molding surface on the parapet wall body. The present invention combines structure with construction, has reasonable structural design, convenient construction, and good waterproof effect, thereby ensuring the durability of the waterproof membrane in the roof waterproofing part.

Description

Technical Field

[0001] The present application relates to the technical field of roof flashing, and in particular to a waterproof structure and construction method of a roof parapet. Background Art

[0002] High-rise buildings often require parapets to improve safety and prevent falls. Parapets connect the roof to the exterior walls, and to prevent rainwater seepage, they require waterproofing. Parapet flashing is the waterproofing of the section of the parapet perpendicular to the roof, primarily to prevent water seepage along the parapet. Waterproofing membranes are typically laid 300mm up in the flashing section, but they are prone to falling off. Even when mortar is applied over the membrane, the mortar layer, applied directly to the membrane surface, is flexible and subject to significant deformation under large temperature fluctuations, while the mortar layer, a brittle material, deforms less under temperature fluctuations. Consequently, the deformation of the membrane and mortar layer is out of sync, causing the mortar layer to separate. Furthermore, the membrane exerts a force on the mortar layer away from the parapet, causing it to crack and fall off. Over time, the mortar layer also tends to fall off, posing a significant risk to roof waterproofing. Therefore, a new construction method combining structural and architectural elements is proposed to address these issues. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a waterproof structure and construction method for a roof parapet in response to the above-mentioned problems. The structure is combined with the building to ensure the durability of the waterproof membrane in the roof waterproof part.

[0004] The embodiment of the present application is implemented as follows:

[0005] An embodiment of the present application provides a waterproof structure of a roof parapet, characterized in that it includes a parapet wall body and a building roof, the parapet wall body and the building roof intersect vertically, the top surface of the building roof and the inner facade of the parapet wall are paved with waterproof membrane, the portion of the parapet wall body where the waterproof membrane is paved is provided with a fixed groove, a protruding retaining strip is provided at a position corresponding to the top of the waterproof membrane, a vertical protective molding surface is provided on the outer surface of the waterproof membrane paved on the parapet wall body, a horizontal protective layer is provided on the outer surface of the waterproof membrane paved on the building roof, and the width of the protruding retaining strip is greater than the thickness of the vertical protective molding surface on the parapet wall body.

[0006] In some optional embodiments, the fixing groove is a U-shaped right-angle groove, the waterproof membrane is laid along the inner wall of the fixing groove, and the rectangular cavity between the outer surface of the waterproof membrane and the protective molding surface is filled with grouting material.

[0007] In some optional embodiments, the vertical protective molding surface includes extruded boards, insulation boards and fiberglass mesh arranged from the inside to the outside, the extruded boards and insulation boards are fixedly connected to the parapet wall through anchor nails, and anti-cracking mortar is applied on the fiberglass mesh.

[0008] In some optional embodiments, the horizontal protective layer includes extruded boards and reinforced concrete layers laid from bottom to top.

[0009] In some optional embodiments, a drip line is provided on the bottom surface of the outer convex baffle.

[0010] In some optional embodiments, non-woven fabric is laid on the outer surface of the extruded board, and the insulation board is made of extruded polystyrene board.

[0011] In some optional embodiments, there are multiple anchor pins, which are evenly spaced apart corresponding to the center line of the fixing groove.

[0012] In some optional embodiments, the fixing groove has a width of 35 mm to 45 mm, a height of 65 mm to 75 mm, and a bottom distance from the building roof of 150 mm to 200 mm.

[0013] In some optional embodiments, the distance between two adjacent anchors is 350mm to 450mm, the height of the waterproof membrane paved on the inner facade of the parapet wall is 300mm to 350mm, and the height of the protruding guard strip is 95mm to 105mm.

[0014] A waterproof structure and construction method for a roof parapet, characterized by comprising the following steps:

[0015] S1) Structural construction: Use wooden planks to reserve a fixed groove at the waterproof position of the parapet wall, install a protruding retaining strip above the water discharge position, and set a drip line;

[0016] S2) Laying the waterproof membrane: Lay the waterproof membrane along the building roof, bend the end of the waterproof membrane close to the parapet wall upward, lay it along the parapet wall and the fixing groove until it is laid at the intersection of the bottom surface of the protruding baffle, lay the extruded board on the waterproof membrane, and lay the non-woven fabric on the extruded board;

[0017] S3) Construction of vertical protective molding surface: inject grouting material into the fixed groove, wait for the grouting material to solidify before laying the insulation board, install anchor nails at the center line of the fixed groove, and ensure that the ends of the anchor nails do not touch the waterproof membrane. Finally, lay the fiberglass mesh and apply anti-cracking mortar;

[0018] S4) Horizontal protective layer construction: Lay steel mesh on the building roof, then pour concrete protective layer to complete the construction.

[0019] The beneficial effects of the present application are: the present application provides a waterproof structure and construction method for a roof parapet, which reserves grooves in the structure and cleverly uses the groove positions as fixing points for anchor nails of the insulation boards, so that the insulation boards are not easy to fall off; the structure reserves protruding lines at specified heights to ensure that the protective layer of the roll material is not washed away by rainwater, and through the combination of structure and building construction, the durability of the waterproof roll material in the roof waterproof part is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0027] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The features and performance of the present application are further described in detail below with reference to the embodiments.

[0030] like Figure 1As shown, the present invention provides a waterproof structure of a roof parapet, comprising a parapet wall body 1 and a building roof 2, the parapet wall body and the building roof intersect vertically, the top surface of the building roof and the inner facade of the parapet wall are paved with waterproof membrane 3, the portion of the parapet wall body where the waterproof membrane is paved is provided with a fixing groove 4, a protruding retaining strip 5 is provided at a position corresponding to the top of the waterproof membrane, a vertical protective molding surface is provided on the outer surface of the waterproof membrane paved on the parapet wall body, a horizontal protective layer is provided on the outer surface of the waterproof membrane paved on the building roof, and the width of the protruding retaining strip is greater than the thickness of the vertical protective molding surface on the parapet wall body.

[0031] The fixing groove is a U-shaped right-angle groove. The waterproof membrane is laid along the inner wall of the fixing groove. The rectangular cavity between the outer surface of the waterproof membrane and the protective molding surface is filled with grouting material 6. The waterproof membrane must be firmly attached without bubbles to ensure construction quality. If the construction period is tight, an early strength agent can be added to the grouting material.

[0032] The vertical protective molding surface includes an extruded board 7, an insulation board 8 and a glass fiber mesh 9 arranged from the inside to the outside. The extruded board and the insulation board are fixedly connected to the parapet wall through anchor nails 10, and the glass fiber mesh is coated with anti-cracking mortar.

[0033] The horizontal protective layer includes an extruded board and a reinforced concrete layer 11 laid from bottom to top.

[0034] The outer surface of the extruded board is paved with non-woven fabric, and the insulation board is made of extruded polystyrene board to reduce costs.

[0035] The bottom surface of the convex baffle is provided with a drip line 12 to ensure that water does not drip onto the vertical protective molding surface and to make it more beautiful.

[0036] In some optional embodiments, multiple anchors are provided, evenly spaced apart corresponding to the center line of the fixing groove. The anchors can only be fixed after the grouting material reaches a certain strength, and the length of the anchors must ensure that they do not penetrate the waterproof membrane.

[0037] In some optional embodiments, the fixing groove has a width of 35 mm to 45 mm, a height of 65 mm to 75 mm, and a bottom distance from the building roof of 150 mm to 200 mm.

[0038] In some optional implementation schemes, the distance between two adjacent anchor nails is 350mm to 450mm, the height of the waterproof membrane paved on the inner facade of the parapet wall is 300mm to 350mm, and the height of the protruding retaining strip is 95mm to 105mm.

[0039] The construction method of the waterproof structure of the roof parapet comprises the following steps:

[0040] S1) Structural construction: Use wooden planks to reserve a fixed groove at the waterproof position of the parapet wall, install a protruding retaining strip above the water discharge position, and set a drip line;

[0041] S2) Laying the waterproof membrane: Lay the waterproof membrane along the building roof, bend the end of the waterproof membrane close to the parapet wall upward, lay it along the parapet wall and the fixing groove until it is laid at the intersection of the bottom surface of the protruding baffle, lay the extruded board on the waterproof membrane, and lay the non-woven fabric on the extruded board;

[0042] S3) Construction of vertical protective molding surface: inject grouting material into the fixed groove, wait for the grouting material to solidify before laying the insulation board, install anchor nails at the center line of the fixed groove, and ensure that the ends of the anchor nails do not touch the waterproof membrane. Finally, lay the fiberglass mesh and apply anti-cracking mortar;

[0043] S4) Horizontal protective layer construction: Lay steel mesh on the building roof, then pour concrete protective layer to complete the construction.

[0044] The waterproof membrane is partially embedded in the structure, and the fixed grooves reserved in the structure are cleverly used as fixing points for the anchor nails of the insulation board, so that the insulation board is firmly fixed to the surface of the waterproof membrane, making it difficult for the waterproof membrane to fall off from the flashing.

Claims

1. A waterproof structure of a roof parapet, characterized in that: The invention comprises a parapet wall and a building roof, wherein the parapet wall and the building roof intersect vertically, and the top surface of the building roof and the inner facade of the parapet wall are paved with waterproof membranes, and the portion of the parapet wall where the waterproof membrane is paved is provided with a fixed groove, and a convex retaining strip is provided at a position corresponding to the top of the waterproof membrane, and a vertical protective molding surface is provided on the outer surface of the waterproof membrane paved on the parapet wall, and a horizontal protective layer is provided on the outer surface of the waterproof membrane paved on the building roof, and the width of the convex retaining strip is greater than the thickness of the vertical protective molding surface on the parapet wall; the fixed groove is a U-shaped right-angle groove, and the waterproof membrane is laid along the inner wall of the fixed groove, and the rectangular cavity between the outer surface of the waterproof membrane and the protective molding surface is filled with grouting material; the vertical protective molding surface comprises an extruded board, an insulation board and a fiberglass mesh arranged from the inside to the outside, The extruded board and the insulation board are fixedly connected to the parapet wall by anchor nails, and the anti-cracking mortar is applied on the glass fiber mesh; the horizontal protective layer includes an extruded board and a reinforced concrete layer laid from bottom to top; the bottom surface of the protruding baffle is provided with a drip line; non-woven fabric is laid on the outer surface of the extruded board, and the insulation board is made of extruded polystyrene board; there are multiple anchor nails, which are evenly spaced corresponding to the center line of the fixed groove; the width of the fixed groove is 35mm~45mm, the height is 65mm~75mm, and the bottom is 150mm~200mm away from the building roof; the spacing between two adjacent anchor nails is 350mm~450mm, the height of the waterproof membrane paved on the inner facade of the parapet wall is 300mm~350mm, and the height of the protruding baffle is 95mm~105mm.

2. The construction method of a waterproof structure of a roof parapet according to claim 1, characterized in that: The steps include: S1) Structural construction: Use wooden planks to reserve a fixed groove at the waterproof position of the parapet wall, install a protruding retaining strip above the water discharge position, and set a drip line; S2) Laying waterproof membrane: Lay the waterproof membrane along the building roof. Bend the end of the waterproof membrane near the parapet wall upwards and lay it along the parapet wall and the fixing groove until it is laid at the intersection of the bottom surface of the protruding retaining strip. Lay the extruded board on the waterproof membrane, and then lay the non-woven fabric on the extruded board; S3) Construction of vertical protective molding surface: Pour grouting material into the fixed groove. After the grouting material solidifies, lay the insulation board. Install anchor nails corresponding to the center line of the fixed groove. The ends of the anchor nails should not touch the waterproof membrane. Finally, lay the fiberglass mesh and apply anti-cracking mortar. S4) Horizontal protective layer construction: Lay steel mesh on the building roof, then pour the concrete protective layer to complete the construction.

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