مرحباً بكم في Jiangsu GreenMore Technology Co., Ltd.
مرحباً بكم في Jiangsu GreenMore Technology Co., Ltd.
Long‑Life Double‑Glazed Structure for PV Tiles: Engineering Durability for Modern BIPV Roofing
AI Summary
GreenMore adopts a long‑life double‑glazed structure in its PV tiles to enhance mechanical strength, weather resistance, and long‑term stability. The dual‑glass module, combined with high‑quality fittings, supports a 30‑year service life, reducing mid‑cycle replacement and lowering maintenance costs for residential and commercial BIPV projects.
Introduction
At GreenMore, we design building‑integrated photovoltaic systems with a clear objective: long‑term reliability. Roof‑integrated PV tiles must operate under the same conditions as traditional roofing materials while delivering stable energy output for decades. To meet this requirement, we use a double‑glazed module structure engineered to withstand environmental stress, mechanical load, and continuous exposure to sunlight and moisture.
This structural approach reflects GreenMore’s commitment to durable BIPV engineering and long‑term system performance.
PV tiles are not mounted above the roof—they become the roof. This places higher demands on structural integrity compared with conventional framed modules. GreenMore’s double‑glazed configuration addresses these demands by providing:
consistent mechanical strength
enhanced moisture resistance
improved fire performance
long‑term UV stability
These characteristics ensure that the tiles maintain performance throughout the building’s lifecycle.
This design aligns with modern roof‑integrated solar systems used in residential and commercial construction.
Double-glass vs single-glass solar panel structure comparison
GreenMore’s PV tiles use two layers of tempered glass—front and back—to encapsulate the solar cells. Compared with polymer‑backsheet modules, this structure offers:
higher resistance to moisture ingress
better protection against microcracks
greater structural rigidity
improved long‑term insulation performance
For BIPV applications, these advantages translate into stable energy output and reduced degradation over time.
This approach supports long‑term BIPV integration where reliability is essential.
GreenMore designs PV tiles to match the expected lifespan of modern roofing materials. The combination of double‑glazed construction and high‑quality fittings enables the system to achieve a 30‑year service life, minimizing the need for mid‑cycle component replacement.
This extended lifespan reduces:
total cost of ownership
maintenance frequency
system wear caused by environmental stress
operational interruptions during roof work
For EPC contractors and developers, this provides predictable long‑term performance and lower lifecycle costs.
GreenMore’s double‑glazed structure enhances durability in several critical areas:
The rigid glass‑glass design distributes mechanical stress evenly, reducing the risk of cell damage during storms or high‑wind events.
Glass‑glass modules have significantly lower moisture permeability, improving long‑term insulation resistance and reducing PID‑related degradation.
The symmetrical structure reduces thermal stress on the cells, minimizing microcrack formation and long‑term performance loss.
These characteristics support reliable BIPV roofing in diverse climates.
Practical application cases of solar tiles
To help installers and project developers better understand the engineering characteristics, the core specifications of the double‑glazed PV tile structure are summarized below.
| Parameter | Value | Remark |
| Overall structure | Front glass → Encapsulating film → Solar cell → Encapsulating film → Back glass | Replacing the traditional back panel + aluminum frame, the mainstream design is frameless. |
| Front glass thickness | Mainstream 3.2mm tempered glass | |
| Back panel glass thickness | Mainstream 3.2mm tempered glass | The bottom layer must be made of tempered glass to bear the main load. |
| Glass type | Ultra-clear, low-iron tempered/semi-tempered glass (front); Embossed/regular tempered glass (back). | Front light transmittance ≥91% (320~1100nm band) |
| Encapsulation materials | EVA / PVB (1.52mm) / PO / Ionomer | PVB is commonly used in double-glazed laminated glass, while EVA is used in lamination. |
| Battery cell type | BC/CIGS (film) | Photovoltaic watts mostly use CIGS thin-film batteries, and BC applications are gradually becoming a trend. |
| Maximum frontal load | ≥5400pa | IEC 61215 standard: 3600pa |
| Maximum load on the back | ≥2400pa | The double-glass structure has no aluminum frame support on the back and relies on the glass to bear the pressure. |
| System voltage | Maximum 1000V | Double-sided double-glass insulation can withstand up to 1500V and has excellent insulation performance. |
| Fire rating | Grade A (Zero permeability) | Glass structure, non-flammable |
| Operating temperature | -40°C ~ +85°C | Adaptable to extreme environments such as high temperature, high humidity, desert, and seaside. |
| PID resistance | Excellent (no metal frame, no grounding required) | Effectively avoid potential-induced decay |
| Design life | 25-30 years | Power consumption ≥ 90% after 10 years, power consumption ≥ 80% after 25 years. |
| Implementation Standards | IEC 61215 / IEC 61646 / GB/T 9535 |
Updated on May 26, 2026
GreenMore’s double‑glazed PV tiles differ from conventional framed modules in several key areas:
Traditional modules sit above the roof. PV tiles replace roofing materials and form a unified surface.
Polymer backsheets degrade over time. Glass‑glass structures maintain stability for decades.
Double‑glazed modules resist microcracks and mechanical stress more effectively.
PV tiles integrate seamlessly into the building envelope, supporting architectural consistency.
These differences make double‑glazed PV tiles a more suitable choice for BIPV roof tiles where longevity and structural compatibility are essential.
A1:Because PV tiles serve as roofing materials, they require stronger environmental protection than standard modules. Double‑glazed construction provides the durability needed for long‑term BIPV applications.
A2:Modern glass‑glass modules maintain high efficiency while improving long‑term stability. The performance consistency over decades often outweighs any initial efficiency difference.
A3:The structure is engineered to meet long‑term durability standards used in BIPV roofing systems. Certification depends on regional requirements and project specifications.
A4:They are slightly heavier than backsheet modules, but the load remains within the limits of standard roofing structures.
A5:Routine visual inspection is typically sufficient due to the enhanced resistance to dust, moisture, and UV exposure.
The long‑life double‑glazed structure used in GreenMore’s PV tiles provides the durability required for modern BIPV roofing. By combining dual‑glass protection with high‑quality fittings, the system delivers a 30‑year service life, reduces maintenance needs, and ensures stable performance across diverse climates. For developers, installers, and building owners, this structure offers a reliable foundation for long‑term solar integration.
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