How to Pick the Right Roof Racking for Different Roof Types

In the construction field, roof racking is a key component to ensure that solar panels are securely installed and operate effectively in the long term. Different types of roof structures have different requirements for the mounting system, and selecting the right roof racking not only relates to the economy of the solar project, but also directly affects the safety and aesthetics of the building. The following will provide professional advice and in-depth analysis for three common roof types, namely flat roof, metal roof and tile roof, aiming at helping readers to select the most suitable roof mounts.

A. Flat Roof Bracket Selection

Flat roofs facilitate the installation of solar panels due to their large unobstructed areas. When selecting a racking system, key considerations include waterproof performance, weather resistance of the material and ease of installation. Flat roof mounts can be subdivided into two main types, ballasted and tripod, each with different characteristics and applications.

1. Ballasted Flat Roof Bracket

Ballasted mounting is a more traditional mounting method that usually uses concrete blocks or gravel bags as compression weights to maintain the stability of the solar panels. This system does not involve a complicated installation process and does not require drilling holes to damage the roof structure, thus avoiding the potential risk of water leakage. Ballasted mounts are better suited for situations where there are infrequent changes and simple installation is required. However, due to the large amount of ballast material required, it may lead to an increase in roof loading, while this system may not be as neat in appearance as other systems.

2. Tripod Solar Mount

Tripod solar racking provides a more flexible and stable support method. This type of mounting system is usually made of metal or composite materials, and the angle of the mount can be adjusted to adapt to different solar irradiation conditions, thus optimizing the efficiency of the PV panels. Tripod systems usually need to be fixed mounted on the roof, which may require drilling holes into the roof. Therefore, strict waterproofing measures must be taken during installation to ensure that all drilled points are properly sealed.

B. Selection of Metal Roof Racking

Metal roofs are favored for their corrosion resistance, light weight and long life. For metal roofs, the selection of brackets needs to take into account the load-bearing capacity of the roofing material and the connection method.

1. Penetrating Bracket System

Penetrating bracket systems are installed by drilling holes and fixing the brackets directly to the roof surface. This method provides a high degree of stability and is particularly suitable for areas subject to high wind and snow loads. However, this type of installation can compromise the integrity of the roofing material, leading to leaks or reducing the service life of the roofing material. Therefore, if you choose a penetration bracket, it is recommended that you use fasteners and waterproof gaskets with excellent sealing properties to ensure that each penetration point is sealed.

2. Non-Penetrating Bracket Systems

Non-penetrating bracket system, such as clamp type or hook type bracket, can be fixed directly to the roof purlin, avoiding penetration damage to the roofing material while ensuring the stability of the structure. In addition, in order to prevent the displacement caused by metal expansion, the bracket material should be selected with certain elasticity to adapt to the dimensional changes caused by temperature changes.

C. Selection of Tile Roof Brackets

Tile roofs are popular for their unique aesthetics and good ventilation and heat dissipation properties. However, the fragility of the tiles and the non-flatness of the roof present challenges in the selection of brackets. In this case, a railed or point-supported bracket system is recommended, which avoids large areas of contact with the shingle surface and reduces damage to the shingles. Importantly, load distribution needs to be precisely calculated during installation to ensure that the load bearing at each fixing point is balanced to avoid shingle breakage due to weight concentration.

When choosing a roof support, in addition to the above specialized advice for different types, there are a few general points to consider:

  • Weathering and corrosion resistance: the bracket material should be able to resist harsh climatic conditions, especially against UV rays, humidity and temperature changes.
  • Compatibility and Expansion: The racking system should be compatible with different types of solar panels and take into account possible future expansion needs.
  • Maintenance and safety: Choose a racking system that is easy to inspect and maintain, and make sure its structural design complies with local safety standards and regulations.

To summarize, the proper selection of roof racking is a critical component to ensure the success of a solar project. For different roof types, the professional advice and analysis provided in this article are designed to help readers make informed decisions to optimize the performance of their solar systems while safeguarding the safety and aesthetics of their buildings. By taking into account factors such as weather resistance, compatibility, ease of maintenance and safety, the return on investment and long-term reliability of solar projects can be effectively enhanced.

SOEASY Company Profile:

  • Diversified product line: The company produces a wide range of solar racking systems, including roof, large-scale ground, carport, balcony, solar racking for agriculture, PV fencing, building-integrated photovoltaic (BIPV), floating systems and racking accessories.
  • Rich project experience: accumulated installation capacity of more than 10GW, annual production of more than 2GW, and has more than 500 project experience, exports ranked in the top ten, products exported to more than 100 countries.
  • Customization ability: We provide material selection (such as aluminum alloy, stainless steel, galvanized magnesium aluminum, etc.), structural design, size customization, and customization services according to customers’ installation needs.
  • Honors and certificates: We have been awarded “Xiamen’s Most Growing Enterprise”, “National High-Tech Enterprise”, etc. Our products have passed TUV certification, CE certification and ISO quality management system, and we have been awarded more than 30 honorary certificates and more than 70 invention patents. Our products have passed TUV certification, CE certification and ISO quality management system.
  • Clear corporate mission and vision: Committed to making PV installation easier and more efficient, providing reliable support for the development of clean energy; vision is to become the world’s leading PV mounting company, to promote the popularization and application of renewable energy, and to contribute to the construction of a green and sustainable future.
You can tell us what you need, such as tilt angle, planned panel layout.
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You can tell us what you need, such as tilt angle, planned panel layout.
File Upload