Against the backdrop of global energy structure transformation, rooftop photovoltaic systems have become a popular choice for households and businesses due to their environmental and economic advantages. However, many homeowners and building managers often have a concern during the initial assessment phase: Will installing solar panels damage my roof? Will it increase the burden on the roof and even affect the safety of the house? These concerns are actually reasonable, as the roof is the most critical component in protecting the building. Improper installation could lead to severe consequences. Therefore, before deciding whether to install solar energy, understanding the relevant details and precautions can help make a suitable choice. Firstly, we need to know several common reasons for roof damage: ① Unprofessional installation Unprofessional drilling can lead to water leakage, uneven load-bearing of installed brackets, or cables pressing on weak materials on the roof, all of which can directly damage the building. ② Insufficient roof load-bearing capacity The weight of the photovoltaic system is 30-50 kilograms per square meter. Long term installation of photovoltaic systems on roofs with insufficient load-bearing capacity may cause roof deformation. ③ Improper waterproof treatment Insufficient waterproof protection during necessary perforation of the roof. ④ Lack of maintenance and natural aging The erosion of sunlight and rainwater can indirectly highlight the rusting of brackets and damage to sealants, thereby endangering the safety of the roof. There is no need to worry excessively about the above situation. When the roof bearing capacity is appropriate, adopting the correct waterproof treatment or choosing a design that does not penetrate the waterproof layer during installation can effectively reduce the risk of leakage. Here are several factors should be paid attention: ① Installation of sloping roof: Sloping roofs are commonly used in residential buildings, and when installing solar systems, brackets or fixtures are typically used to secure the panels along the plane of the roof. Attention: Improper drilling and sealing during installation may result in rainwater infiltration. In addition, the long-term pressure of solar system can have an impact on load-bearing components, especially in old structures. ② Flat roof installation: Traditionally, flat roofs are common in commercial buildings. The installation of photovoltaic systems generally adopts a ballast installation system (using heavy blocks, such as cement blocks), which can avoid penetrating the roof. Attention:The ballast block may compress the waterproof membrane. Improper installation may also puncture the installed waterproof layer. ③ Metal roof: Photovoltaic brackets can choose fixture systems as much as possible to avoid drilling holes; Apply double-layer sealant to the drilled area. Attention: Tight fixtures can cause metal plates to bend and even damage the anti-corrosion...

For island and coastal PV projects, wind load is only part of the challenge. Last month, we received an inquiry from an Indonesian customer for a ground-mounted carbon steel solar mounting system. During the project evaluation, we found that the site was located in an island area, very close to the coastline, with relatively low terrain. For projects like this, many teams usually focus first on one key factor: “What is the design wind speed?” However, for coastal solar projects, there are several other critical factors that directly affect the long-term reliability of the mounting structure. Here are some key points we always evaluate: 1. Wind Load Conditions Coastal and island areas are often exposed to stronger wind conditions due to: · Open terrain; · Seasonal monsoon; · Typhoon risks; · Limited surrounding protection. Therefore, during the design stage, it is important to confirm: a. Local design wind speed; b. Applicable design standard (ASCE, Eurocode, or local codes); c. Terrain category and site exposure conditions. 2. Corrosion Risk from High Humidity and Salt Mist Coastal environments usually involve: ·High humidity; ·Strong salt spray; ·Accelerated corrosion conditions. In many coastal areas, the environmental corrosion category can reach C4-C5, and even C5-M (marine environment). For these conditions: 1) Carbon steel structures are usually recommended with hot-dip galvanizing ≥80μm. For projects requiring higher durability, or where the budget allows, 100μm+ galvanizing thickness can provide additional protection. Another advanced option is: 2) S350GD steel with ZAM450 (Zinc-Aluminum-Magnesium coating), which offers excellent corrosion resistance for challenging environments. 3. Important Details That Are Often Overlooked Besides wind load and corrosion protection, several site conditions should also be carefully reviewed: a. How far is the project site from the coastline? b. What is the site elevation above sea level? c. Has the area experienced tidal flooding, seawater intrusion, or seasonal water accumulation? d. Is the project located on reclaimed land, coral sand, or low-lying coastal terrain? e. Is there a geotechnical investigation report available? f. Has the project owner or utility company provided the final layout and ground elevation information? g. What type of foundation will be used — concrete foundation or ground screws? One more important reminder: If concrete foundations are used, salt-contaminated sea sand should never be used, as it may accelerate reinforcement corrosion and affect the long-term durability of the foundation. A reliable solar mounting system is not only about structural strength. It is about understanding the project environment, selecting the right materials, and paying attention to every engineering detail. At Corigy Solar, we have been dedicated to solar mounting systems for more than 10 years. Whether it is a MW-scale ground-mounted project or a large commercial PV application, we believe: Engin...

Corigy's hot-dip galvanized solar panel on ground photovoltaic brackets have a broad customer base and can be customized to meet specific needs. This material offers excellent corrosion resistance, with customers typically requiring a C4 or C5 rating to create an 85-micron or 100-micron hot-dip galvanized layer. These brackets are commonly used in projects in coastal areas and alkaline soil regions. Corigy adheres to stringent quality standards! Therefore, its hot-dip galvanized solar panel on ground photovoltaic brackets are suitable for long-term outdoor use; they offer flexible layout, easy installation, and excellent load-bearing capacity and wind resistance! CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com

Flat roof mounting system for solar panels are mainly divided into two categories. One is ballasted mounting type which has no any damage to roof. The other is using expansion bolts to fix the feet of structure to the roof, the expansion is drove into the roof, so this type has damage to flat roof. 1. Damaged type flat roof solar mounting solution. We can adopt this type of flat roof solar mounting structure if the flat rooftop is strong enough. The structure on roof is similar with structures on ground. Material can be both aluminum and steel. Weight of aluminum material structure is lighter compared with steel steel. So aluminum is more ideal for such type of flat roof mountings. But cost of aluminum material is more expensive than that of steel. There is a risk of roof water seepage with this PV mounting method. So we have to waterproof the roof. 2.Ballasted type of flat roof solar mounting structure. Solar panel ballast mount on flat roof is very popular now, especially for the old buildings. Because roof of such old buildings is weak , it can’t suffer from any damage on it. So driving bolts into the rooftop isn’t a good solution. Ballasted PV mounting structure isn’t penetrate the roof, it is a friendly mounting way to old building rooftop. And more material of this mounting structure is normal aluminum,which is lighter , so it is good to weak roof. Ballast mounting system also has an advantage of easy installation, which could save a lot installation cost. There is a special ballasted type. Normally we put ballasted stone or block on the bottom rail of structure to resist the wind. But we also can fix the feet of structure to the ballasted block by expansion bolt, the blocks are put on roof. We can also embed the anchor in the cement block when producing the concrete block. And then fix the structure to the anchor by nut. Corigy also do good in flat roof solar mounting systems. If you have flat roof solar projects , welcome to send inquiry to us. Thank you. Ballasted vs. Bolted Flat Roof Solar Mounts – Which to Choose? Choosing a flat roof solar racking system? Learn the pros and cons of ballasted and penetration mounts, plus cost-saving tips for old buildings. CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com

Balcony pv mounting systems are highly popular in Europe. These small-scale PV devices have sparked an energy revolution in countries like Germany and Austria, enabling renters and apartment residents to easily access clean energy and reduce electricity bills. For example,with the government streamlining approval processes, Germany has installed over one million balcony solar systems nationwide; and Austria has revised its Apartment Law（WEG-Novelle 2024） to accelerate the adoption of balcony solar power. So what kind of balcony is suitable for installing solar panels? Simply put, balconies that meet the following three conditions are suitable for installing solar energy systems: structural safety, appropriate orientation and sufficient sunlight, and also compliance and legality. Firstly, it is necessary to ensure the load-bearing safety of the balcony and mounting brackets. The balcony solar brackets and railings must be able to withstand the additional weight of photovoltaic modules and brackets. The railing is sturdy and can be hung or fix the solar mounting structure. For some special balconies, attention should be paid to the following aspects: If your balcony is a closed balcony, it needs to have good glass transparency and no serious obstruction. If your house is old or has a suspended balcony. Those balconies has insufficient load-bearing capacity and requires professional evaluation or reinforcement before installing a solar energy system to avoid danger. If you live in a high-rise building, you need to strengthen the wind resistance of the railings and solar brackets. Due to the high wind speed in coastal/typhoon areas, special reinforcement of solar mounting supports is also required. Secondly, the orientation and lighting conditions of the balcony are also important. In the Northern Hemisphere, facing south on the balcony is optimal for obtaining the longest sunshine duration and the highest power generation efficiency. The area around the balcony where the solar energy system is installed should be unobstructed by tall trees or buildings to ensure direct sunlight on the photovoltaic panels. In Europe, countries with superior lighting conditions such as Germany, Austria, France, Italy, and the Netherlands are very suitable for installing balcony pv mounting systems. However, countries like the UK with short daylight hours and frequent rainy days are not very suitable. Some high latitude countries, such as Norway, Sweden, and Finland, may experience long polar nights in winter, which also requires careful consideration. Last but not least, it is important to determine whether installing solar energy systems on balconies complies with local policies. And it is necessary to confirm whether to apply for registration with relevant units in advance. For example, Belgium and Hungary currently have very strict policy restrictions for balcony pv mounting systems due to considerations of power grid safety and regulations. When installing balcony...

Last week, one of our clients from Aruba asked an interesting question: "Should our solar carport use Q275 steel and SUS316 stainless steel because Aruba is an island?" It's a great question, and one that many project owners ask when designing solar carports in coastal environments. Here is our recommendation. 1. Structural Steel: Why Q235B Is Still the Industry Standard For most solar carport structures, the industry standard is to use Q235B carbon steel for columns and beams, protected by hot-dip galvanizing. While many suppliers provide a zinc coating of around 65 μm, our standard specification is at least 80 μm, and for highly corrosive coastal or island environments such as Aruba, we generally recommend increasing the coating thickness to 100 μm or more whenever the project budget allows. Many customers also ask whether Q275 steel is a better choice. In practice, the answer is not necessarily. Compared with Q235B, Q275 offers higher yield strength, but for most solar carport designs this additional strength provides very limited practical benefit. Structural performance is usually governed by the engineering design rather than simply selecting a higher-strength steel grade. Of course, Q275 can be supplied when required, but it is typically a customized solution and usually requires larger production quantities. 2. Rails: Why We Prefer S350GD + ZAM275 For roll-formed components such as solar rails that do not require welding, we normally recommend S350GD steel with ZAM275 (Zinc-Aluminium-Magnesium) coating. Compared with conventional galvanized steel, ZAM offers several advantages: · Excellent corrosion resistance ·Outstanding cut-edge self-healing performance · A smoother and more attractive surface finish These characteristics make it an ideal choice for long-term outdoor solar applications. 3. Fasteners: SUS304 or SUS316? Fasteners are often overlooked, but they play an important role in long-term reliability. For island or coastal projects like Aruba, SUS316 stainless steel is generally recommended whenever the budget permits, as it provides better resistance to chloride corrosion than SUS304. 4. Should the Entire Carport Be Made of SUS316? Another question we often receive is: "Can the entire solar carport be manufactured from SUS316 stainless steel?" Technically, yes. However, from an engineering and commercial perspective, it is usually not the most cost-effective solution. Using SUS316 for the entire structure significantly increases material costs, while the improvement in structural performance is relatively small. In most projects, the additional investment does not translate into proportional long-term value. Our Recommended Material Combination After evaluating structural performance, corrosion resistance, service life and project cost, we typically recommend the following combination: • Columns & Beams: Q235B carbon steel with hot-dip galvanizing (≥80 μm, preferably ≥100 μm for coastal environments) • Solar Rails: S350GD + Z...