Roof structure
By installing a reinforcement layer, an isolation layer, and a light-reflecting layer on old mineral asphalt roofs, the problems of mineral material detachment and adhesion performance were solved, achieving efficient solar reflection and cooling and energy-saving effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SOUTHWEST INST PHOTONICS TECH (SICHUAN) CO LTD
- Filing Date
- 2025-02-18
- Publication Date
- 2026-05-12
AI Technical Summary
The aging of old mineral aggregate asphalt roofing materials leads to mineral aggregate detachment and easy aging and oil seepage of asphalt. Direct application of self-adhesive roofing membranes makes it difficult to guarantee adhesion performance, and the cost of removing mineral aggregates is high.
A reinforcement layer, an isolation layer, and a light-reflecting layer are installed on the original roof structure. The reinforcement layer prevents the mineral materials from falling off, the isolation layer blocks the migration of oil, and the light-reflecting layer reflects sunlight. A reasonable combination of water-emulsion asphalt, epoxy interface agent, and butyl rubber is used.
This technology improves the robustness and long-term adhesion of the light-reflecting layer at a low cost, enhances sunlight reflection, and reduces construction and maintenance costs.
Smart Images
Figure CN224228125U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building technology, and more particularly to a roof structure. Background Technology
[0002] For warehouses and equipment base stations, using high solar reflectivity materials on the external enclosure structure can effectively achieve cooling and energy saving. Therefore, using reflectivity materials to renovate existing old warehouses and base stations is of great significance for achieving green and low-carbon development in society.
[0003] For existing old asphalt-based roofs containing mineral aggregates, the mineral aggregates are prone to falling off due to the aging of the roof base material, and the asphalt is prone to aging and oil seepage. Directly applying self-adhesive roofing membranes makes it difficult to guarantee the adhesion performance of the membranes. Removing all the mineral aggregates from the roof would result in extremely high costs. Utility Model Content
[0004] This application provides a roof structure for old mineral asphalt roofs that enables the construction of high-solar-reflective self-adhesive roofing membranes on old mineral asphalt roofs at a lower cost.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] This application provides a roof structure, including: a base layer; a reinforcing layer disposed on the upper surface of the base layer for reinforcing the base layer; an isolation layer disposed on the upper surface of the reinforcing layer for isolating the reinforcing layer from the outside; and a light-reflecting layer disposed on the upper surface of the isolation layer for reflecting sunlight.
[0007] As an optional implementation, the base layer is made of asphalt; and the reinforcement layer is made of asphalt waterproof coating.
[0008] As an alternative implementation, the isolation layer is made of an epoxy interface agent.
[0009] As an alternative implementation, the light-reflecting layer is made of a solar reflective film.
[0010] As an optional implementation, the thickness of the light-reflecting layer is set to be greater than or equal to 0.15 mm and less than or equal to 0.3 mm.
[0011] As an optional implementation, the density of the reinforcement layer is set to be greater than or equal to 0.7 kg / m³. 2 And less than or equal to 1.0 kg / m 2 .
[0012] As an optional implementation, the density of the isolation layer is set to be greater than or equal to 0.1 kg / m³. 2 And less than or equal to 0.2 kg / m2 .
[0013] As an alternative implementation, the light-reflecting layer is bonded to the upper surface of the insulating layer via an adhesive layer.
[0014] As an optional implementation, butyl rubber is used as the adhesive layer.
[0015] As an optional implementation, the thickness of the adhesive layer is set to be greater than or equal to 0.6 mm and less than or equal to 1.2 mm.
[0016] This application provides a roof structure that does not require the removal of the original roof structure. A reinforcement layer is set on the upper surface of the base layer to reinforce the base layer, and an isolation layer is set on the upper surface of the reinforcement layer to isolate the reinforcement layer from the outside. A light-reflecting layer is set on the upper surface of the isolation layer. This can solve the problems of old asphalt base roofs containing mineral materials where the mineral materials are easy to fall off and the difficulty in directly setting the roof rolls on the base layer. It also makes the installed light-reflecting layer more secure. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the roof structure provided in the embodiments of this application.
[0019] Explanation of reference numerals in the attached figures:
[0020] 100, base layer; 200, reinforcement layer; 300, isolation layer; 400, light reflective layer; 500, adhesive layer. Detailed Implementation
[0021] For warehouses and equipment base stations, using high solar reflectivity materials on the external enclosure structure can effectively achieve cooling and energy saving. Therefore, using reflectivity materials to renovate existing old warehouses and base stations is of great significance for achieving green and low-carbon development in society.
[0022] For existing old asphalt-based roofs containing mineral aggregates, the mineral aggregates are prone to falling off due to the aging of the roof base material, and the asphalt is also prone to aging and oil seepage. Directly applying self-adhesive roofing membranes makes it difficult to guarantee the initial adhesion and long-term adhesion performance of the membranes. Removing all the mineral aggregates from the roof would result in extremely high costs.
[0023] To overcome the shortcomings of the prior art, this application provides a roof structure that does not require the removal of the original roof structure. A reinforcing layer 200 is disposed on the upper surface of the base layer 100 to reinforce the base layer 100. An isolation layer 300 is disposed on the upper surface of the reinforcing layer 200 to prevent small molecules in the reinforcing layer 200 from migrating to the outside. A light-reflecting layer 400 is disposed on the upper surface of the isolation layer 300. This can solve the problems of easy detachment of mineral materials from old asphalt base layer 100 roofs containing mineral materials, difficulty in directly applying roof rolls to the surface of the base layer 100, and decreased adhesion of roof rolls during long-term use. It also makes the installed light-reflecting layer 400 more secure.
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figure 1 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0025] This application provides a roof structure including a base layer 100, a reinforcing layer 200, an insulating layer 300, and a light-reflecting layer 400. The reinforcing layer 200 is disposed on the upper surface of the base layer 100 for reinforcing the base layer 100. The insulating layer 300 is disposed on the upper surface of the reinforcing layer 200 for isolating the reinforcing layer 200 from the external environment. The light-reflecting layer 400 is disposed on the upper surface of the insulating layer 300 for reflecting sunlight.
[0026] In this embodiment, the base layer 100 can be an existing, old asphalt base layer 100 roof containing mineral materials.
[0027] A reinforcement layer 200 is installed on the upper surface of the base layer 100. The reinforcement layer 200 can effectively reinforce the mineral material in the base layer 100 and prevent the mineral material on the original roof from falling off and affecting subsequent construction.
[0028] An isolation layer 300 is provided on the upper surface of the reinforcing layer 200. The isolation layer 300 can form an isolation barrier on the surface of the reinforcing layer 200. On the one hand, it can improve the surface properties of the reinforcing layer 200 and enhance the adhesive effect of the adhesive layer 500 on the reinforcing layer 200. On the other hand, it can effectively prevent oil and small molecules in the reinforcing layer 200 from migrating to the outside and affecting the upper adhesive layer 500, thus affecting the adhesive effect during long-term use. It can effectively improve the fixation effect of the light reflective layer 400.
[0029] The upper surface of the isolation layer 300 is provided with a light reflective layer 400, which can reflect a large amount of solar energy, thereby achieving the cooling and energy-saving renovation of old buildings.
[0030] When renovating an old roof using the roof structure described in this embodiment, the following steps can be followed: First, clean the surface of the original mineral asphalt roof base layer 100 to remove debris. Then, evenly apply the reinforcement layer 200 to the base layer 100 until it is completely dry. Next, evenly brush the isolation layer 300 onto the upper surface of the dried reinforcement layer 200 until it is completely dry. Finally, apply the light-reflecting layer 400 to the upper surface of the isolation layer 300 and reinforce it.
[0031] For existing, old asphalt-based roofs containing mineral aggregates (100), the mineral aggregates are prone to detachment due to the aging of the roof base material (100), and the asphalt is prone to aging and oil seepage. Directly applying self-adhesive roofing membranes makes it difficult to guarantee the initial adhesion and long-term adhesion performance of the membranes. Removing all the mineral aggregates from the roof would result in extremely high costs. In this embodiment, the roof structure features a reinforcing layer (200) on the upper surface of the base layer (100) to reinforce it, an isolation layer (300) on the upper surface of the reinforcing layer (200) to improve the adhesion between the reinforcing layer (200) and the adhesive layer (500) and isolate them, and a light-reflecting layer (400) on the upper surface of the isolation layer (300). This design solves the problems of mineral aggregate detachment and difficulty in directly applying roofing membranes to the base layer (100) in old asphalt-based roofs containing mineral aggregates, and also makes the installed light-reflecting layer (400) more secure.
[0032] In some embodiments, the base layer 100 is made of asphalt, and the reinforcing layer 200 is made of asphalt waterproof coating.
[0033] In this embodiment, the base layer 100 is asphalt, and the reinforcement layer 200 is reinforced with a corresponding asphalt waterproof coating, which can maintain good compatibility with the original roof.
[0034] In some specific embodiments, the reinforcement layer 200 can use a low-temperature resistant, high-strength water-based asphalt waterproof coating with a solid content ≥45% and an elongation at break ≥800%, which is 30% higher than that of conventional asphalt coatings. It can pass the low-temperature flexibility test at -15℃ and shows no slippage, flow, or dripping at 140℃. It is well compatible with the original roof and has excellent durability.
[0035] In some specific embodiments, the density of the reinforcing layer 200 is set to be greater than or equal to 0.7 kg / m³. 2 And less than or equal to 1.0 kg / m 2 (e.g., 0.7 kg / m) 2 0.8kg / m 20.9kg / m 2 1.0kg / m 2 (etc.). The density here can also be understood as the amount used in construction. Actual construction according to the above numerical range can effectively wrap and cover the mineral material on the original roof base layer 100, preventing the mineral material from falling off.
[0036] In some embodiments, the isolation layer 300 is made of an epoxy interface agent. Epoxy interface agents are high-performance adhesives widely used in construction, decoration, and industrial fields. Epoxy interface agents possess high bonding strength, allowing them to adhere to the surface of the reinforcing layer 200, improving its surface properties and facilitating a firm bond to the light-reflecting layer 400.
[0037] Furthermore, the isolation layer 300 can also use a two-component epoxy interface agent. The two-component epoxy interface agent is composed of epoxy resin and curing agent. It is a high molecular polymer containing epoxy groups, which has good density and environmental stability. It can effectively prevent the oil in the asphalt of the reinforcing layer 200 from migrating to the adhesive layer 500, and ensure that the reflective layer 400 has excellent adhesion during long-term use.
[0038] Furthermore, the density of the isolation layer 300 is set to be greater than or equal to 0.1 kg / m³. 2 And less than or equal to 0.2 kg / m 2 For example, 0.1 kg / m 2 0.12kg / m 2 0.15kg / m 2 0.18kg / m 2 0.2kg / m 2 The density here can also be understood as the amount used in construction. Actual construction is carried out according to the above numerical range to improve the surface properties of the reinforcement layer 200 and effectively prevent the oil in the asphalt of the reinforcement layer 200 from migrating to the adhesive layer 500.
[0039] In some embodiments, the light-reflecting layer 400 is made of a solar reflective film. Specifically, the solar reflective film can be a solar reflective film with PET, PTFE, ETFE, PP, or PE substrates, preferably a PET or PTFE reflective film with internal foaming pores, which can have excellent solar reflective performance.
[0040] Furthermore, the thickness of the light reflective layer 400 is set to be greater than or equal to 0.15 mm and less than or equal to 0.3 mm, such as 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, etc.
[0041] In some embodiments, the light reflective layer 400 is bonded to the upper surface of the insulating layer 300 by an adhesive layer 500.
[0042] During construction, firstly, debris on the surface of the existing mineral-based asphalt roof base layer 100 is cleaned. Then, the reinforcement layer 200 is evenly applied to the base layer 100 until it is completely dry. Next, the isolation layer 300 is evenly brushed onto the upper surface of the dried reinforcement layer 200 until it is completely dry. Finally, the adhesive layer 500 and the light-reflecting layer 400 are laminated using a coating process to create a reflective roll material. This reflective roll material is then directly applied to the already constructed isolation layer 300, forming a high solar reflectivity roof.
[0043] In some specific embodiments, the adhesive layer 500 is made of butyl rubber. Butyl rubber, also known as butyl rubber, is mainly composed of isobutylene and a small amount of isoprene monomers copolymerized together. Isobutylene units constitute the majority of the molecular chain, while isoprene units provide a small number of double bonds for vulcanization crosslinking reactions. It can be used in building roof waterproofing projects, providing reliable waterproofing and sealing effects.
[0044] In some specific embodiments, the thickness of the adhesive layer 500 is set to be greater than or equal to 0.6 mm and less than or equal to 1.2 mm, such as 0.6 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, etc.
[0045] In one specific embodiment, the roof structure of this application may include a base layer 100, a reinforcing layer 200, an isolation layer 300, an adhesive layer 500, and a light-reflecting layer 400.
[0046] The reinforcement layer 200 preferably uses a low-temperature resistant, high-strength water-based asphalt waterproof coating with an elongation at break ≥800%, 30% higher than conventional asphalt coatings. It passes a low-temperature flexibility test at -15℃ and exhibits no slippage, flow, or dripping at 140℃. The preferred application rate is 0.8 kg / m². 2 It can effectively reinforce the original roofing aggregate.
[0047] For the isolation layer 300, a two-component epoxy interface agent is preferred, with a solid content ≥25%, a surface drying time ≤3h, and a dosage of 0.12kg / m². 2 It can improve the surface properties of the reinforcement layer 200 and effectively prevent the oil in the asphalt of the reinforcement layer 200 from migrating to the adhesive layer 500.
[0048] The adhesive layer 500 preferably uses butyl rubber with a thickness of 1 mm. Butyl rubber has broad substrate compatibility and excellent and durable bonding performance, and will not produce black oily substances during long-term use, thus not polluting the material of the solar reflective layer 400.
[0049] The solar reflective layer 400 can use solar reflective films with PET, PTFE, ETFE, PP, or PE substrates. Preferably, it uses PET or PTFE reflective films with internal foaming pores, with a thickness of 0.2 mm, which can have excellent solar reflective performance.
[0050] The working principle of the roof structure of this application is described below through two more specific embodiments.
[0051] Example 1
[0052] Clean the surface of the existing mineral aggregate asphalt roof base layer 100 to remove debris, and then evenly apply water-based asphalt coating to the existing roof base layer 100, with a coating amount of approximately 0.8 kg / m². 2 Allow 24 hours for the asphalt coating to dry completely. Mix the two-component epoxy interface agent according to the specified ratio and dilute with water to a solid content of 30%. Apply the epoxy interface agent evenly to the dried water-emulsion asphalt coating surface, using an application rate of approximately 0.12 kg / m². 2 Allow 24 hours for the interface agent to dry completely. A 1.0mm thick butyl rubber layer is then coated with a 0.2mm thick solar reflective film containing micropores to create a butyl rubber-coated reflective roofing membrane. This membrane is then directly applied to the roof surface where water-emulsion asphalt and the interface agent have been applied, forming a high solar reflectance roof. Testing showed that the roof structure formed in this embodiment has a solar reflectance of 0.93, and the adhesive strength of the solar reflective film is 2.8 N / mm. After 6 months, the adhesive strength is 2.7 N / mm, with a degradation of less than 10%.
[0053] Example 2
[0054] Clean the surface of the existing mineral aggregate asphalt roof base layer 100 to remove debris, and then evenly apply water-based asphalt coating to the existing roof base layer 100, with a coating amount of approximately 1.0 kg / m². 2 Allow 24 hours for the asphalt coating to dry completely. Mix the two-component epoxy interface agent according to the specified ratio and dilute with water to a solid content of 30%. Apply the epoxy interface agent evenly to the dried water-emulsion asphalt coating surface, using an application rate of approximately 0.2 kg / m². 2 Allow 24 hours for the interface agent to dry completely. A 1.2mm thick butyl rubber layer and a 0.15mm thick PTFE reflective film are then coated to create a butyl rubber-coated reflective roofing membrane. This membrane is then directly applied to the roof surface where water-emulsion asphalt and the interface agent have been applied, forming a high-solar-reflectivity roof. Testing showed that the roof's solar reflectance in this embodiment reaches 0.90, the adhesive strength of the roof's solar reflective film is 2.5 N / mm, and after 6 months, the adhesive strength is 2.4 N / mm, with a degradation of less than 10%.
[0055] Two comparative examples of existing technologies are provided below to visually demonstrate the technological advantages of this application through comparison.
[0056] Comparative Example 1
[0057] After cleaning debris from the existing mineral-bearing asphalt roof base layer, a 1.2mm thick butyl rubber and a 0.15mm thick PTFE reflective film were coated to create a butyl rubber-coated reflective roll. This composite roll was then directly applied to the existing roof surface, forming a high-solar-reflectivity roof. The resulting roof had a solar reflectance of 0.90, and the adhesive strength of the roof solar reflective film was 1.5 N / mm. After 6 months, the adhesive strength decreased to 0.7 N / mm, representing a degradation of approximately 60%.
[0058] Comparative Example 2
[0059] Clean the existing surface of the mineral aggregate asphalt roof base layer of debris, and then apply water-based asphalt coating to the existing roof base layer at a rate of approximately 1.0 kg / m². 2 After 24 hours, allow the asphalt coating to dry completely. A 1.2mm thick butyl rubber layer and a 0.15mm thick PTFE reflective film are then coated to create a butyl rubber-coated reflective roofing membrane. This membrane is then directly applied to the surface of the water-emulsion asphalt roof to form a high-reflectivity roof. The resulting roof has a solar reflectance of 0.90, and the adhesive strength of the reflective film is 2.2 N / mm. After 6 months, the adhesive strength drops to 1.3 N / mm, representing a decrease of approximately 60%.
[0060] As can be seen from Examples 1-2 and Comparative Examples 1-2 above, after adding the water-emulsion asphalt layer and the epoxy interface agent layer, the adhesive performance and long-term adhesive performance of the reflective film are significantly improved. The adhesive performance of the reflective film is improved by about 70%, and the long-term adhesive performance of the reflective film is improved by about 100%.
[0061] Therefore, this application demonstrates that by scientifically and rationally combining water-emulsion asphalt, epoxy interface agent, butyl rubber and solar reflective film, the present invention significantly improves both its construction performance and long-term use performance, thus endowing old mineral-containing asphalt roof buildings with reflective and energy-saving functions.
[0062] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0063] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0064] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0065] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A roof structure, characterized in that, include: Grassroots level (100); A reinforcing layer (200) is disposed on the upper surface of the base layer (100) for reinforcing the base layer (100); An isolation layer (300) is disposed on the upper surface of the reinforcing layer (200) for isolating the reinforcing layer (200) from the outside; A light-reflecting layer (400) is disposed on the upper surface of the isolation layer (300) for reflecting sunlight.
2. The roof structure according to claim 1, characterized in that, The base layer (100) is made of asphalt; and, The reinforcement layer (200) is made of asphalt waterproof coating.
3. The roof structure according to claim 1, characterized in that, The isolation layer (300) is made of epoxy interface agent.
4. The roof structure according to claim 1, characterized in that, The light-reflecting layer (400) is made of a solar reflective film.
5. The roof structure according to claim 1, characterized in that, The thickness of the light-reflecting layer (400) is set to be greater than or equal to 0.15 mm and less than or equal to 0.3 mm.
6. The roof structure according to claim 1, characterized in that, The density of the reinforcing layer (200) is set to be greater than or equal to 0.7 kg / m³. 2 And less than or equal to 1.0 kg / m 2 .
7. The roof structure according to claim 1, characterized in that, The density of the isolation layer (300) is set to be greater than or equal to 0.1 kg / m³. 2 And less than or equal to 0.2 kg / m 2 .
8. The roof structure according to any one of claims 1 to 7, characterized in that, The light-reflecting layer (400) is bonded to the upper surface of the insulating layer (300) by an adhesive layer (500).
9. The roof structure according to claim 8, characterized in that, The adhesive layer (500) is made of butyl rubber.
10. The roof structure according to claim 8, characterized in that, The thickness of the adhesive layer (500) is set to be greater than or equal to 0.6 mm and less than or equal to 1.2 mm.