As the solar energy industry continues to expand, so does the demand for durable, cost-effective, and long-lasting mounting materials. One standout solution gaining traction is ZAM-coated steel—an innovative material that is rapidly replacing traditional galvanized steel in many applications.

But what exactly is ZAM? And why are more solar companies and EPCs switching to it?

What Is ZAM?

ZAM stands for Zinc-Aluminum-Magnesium coated steel. It is a type of hot-dip alloy coating that consists of:

Zinc (Zn) – the primary corrosion-resistant element

Aluminum (Al) – enhances surface stability and oxidation resistance

Magnesium (Mg) – improves adhesion and provides self-healing properties

This combination creates a protective layer that performs far better than traditional hot-dip galvanizing (HDG) in many environments.

Top Reasons Customers Are Choosing ZAM

1. Superior Corrosion Resistance

ZAM offers 2 to 3 times better corrosion resistance compared to conventional HDG coatings, especially in:

Salt-spray environments (coastal, marine regions)

Industrial zones with high pollution

High-humidity climates

This longer service life translates directly into lower maintenance costs and longer-lasting installations.

2. Thinner Coating, Stronger Protection

Unlike HDG, which requires a thick zinc layer, ZAM can achieve better performance with thinner coatings (often 10–30μm). This results in:

Lighter structures

Better precision in component design and tolerance

Lower material usage, which is both cost-efficient and eco-friendly

3. Self-Healing Ability

Thanks to magnesium’s role in the alloy, ZAM-coated steel can self-heal scratches and cut edges, preventing rust from spreading—an advantage especially important during installation and transportation.

4. Excellent Weldability and Formability

ZAM-coated steel allows for easy:

Bending, punching, and rolling

Welding without extensive damage to the coating

This makes it ideal for complex solar racking designs and custom solutions.

5. Attractive Appearance

ZAM has a smooth, silvery finish, offering a clean, high-tech look that fits well in visible installations such as carports, fences, or rooftop solar systems in urban areas.

ZAM vs. HDG: A Quick Comparison

Conclusion

More and more solar developers are moving toward ZAM-coated steel because it offers long-term reliability, reduced total cost of ownership, and better performance in harsh environments. For projects requiring durability, efficiency, and a modern finish, ZAM is becoming the material of choice.

At Xiamen Topfence, we offer ZAM-based pv mounting systems tailored for both ground and rooftop PV projects. If you're planning a project that needs advanced protection with lasting value—ZAM is worth the upgrade.

In the solar mounting industry, carbon steel is widely used for its strength, durability, and cost-effectiveness. However, one common question arises: Will carbon steel rust? And if so, how can we prevent it? Let’s explore.

Does Carbon Steel Rust?

Yes, carbon steel is prone to rusting when exposed to moisture, oxygen, and other environmental elements. Unlike stainless steel or aluminum, carbon steel lacks sufficient corrosion resistance on its own. Over time, unprotected carbon steel will develop surface rust, which can compromise both the structural integrity and appearance of the solar mounting system.

Why Still Use Carbon Steel for Solar Structures?

Despite its susceptibility to rust, carbon steel remains popular in solar racking systems for several reasons:

High strength-to-weight ratio

Lower material cost compared to aluminum and stainless steel

Good load-bearing capacity for ground mount and large-scale projects

Easy fabrication and installation

To maximize its advantages, it’s crucial to apply effective anti-corrosion treatment.

Protection Methods for Carbon Steel Structures

Here are the most common and effective surface treatments used in the solar industry:

1. Hot-Dip Galvanizing (HDG)

A thick layer of zinc is applied by immersing steel in molten zinc. HDG offers:

Excellent long-term corrosion resistance

Self-healing capability at cut edges

Typical zinc coating thickness: 65μm to 85μm

Ideal for outdoor and coastal installations

2. Zinc-Aluminum-Magnesium (ZAM) Coating

ZAM is a newer type of coating offering:

Superior corrosion resistance (up to 2-3 times better than HDG in salt spray tests)

Thinner coating with better surface finish

High-performance protection in aggressive environments

3. Powder Coating or Epoxy Painting

These coatings offer both protection and aesthetics:

Applied electrostatically and cured under heat

Often used for custom colors or secondary protection

Requires good surface preparation to ensure adhesion

Additional Tips for Corrosion Prevention

Avoid water traps in the design (open profiles, drainage holes)

Use compatible fasteners (e.g., stainless bolts with HDG steel)

Apply touch-up spray (zinc-rich paint) on cut edges during installation

Choose suitable protection based on climate (desert, seaside, humid areas)

Conclusion

Yes, carbon steel can rust—but with the right surface treatment such as hot-dip galvanizing or ZAM coating, it becomes a reliable and long-lasting material for solar racking systems. When designed and protected properly, carbon steel structures can serve your solar project for 20+ years, even in harsh environments.

If you're looking for a durable, cost-efficient, and well-protected steel pv mounting system, carbon steel with advanced anti-corrosion treatment is a strong choice.

When planning a rooftop solar project, choosing the right mounting system is a key factor for long-term performance and safety. The two most common options are Ballasted (non-penetrating) and Penetrating solar mounting systems. Each offers distinct advantages and limitations depending on your roof type, structural capacity, and installation goals.

This article breaks down the pros and cons of both systems to help you make an informed decision.

What is a Ballasted Mounting System?

Ballasted mounting systems use weight—typically concrete blocks—to hold solar panels in place, without penetrating the roof surface. They are mostly used on flat roofs.

Pros:

No Roof Penetration: Ideal for maintaining the waterproof integrity of the roof.

Fast Installation: No drilling or sealing means faster setup and lower labor costs.

Easily Removable: Great for leased buildings or temporary installations.

Simplified Permitting: In some jurisdictions, non-penetrating systems face fewer regulatory requirements.

Cons:

Heavy Load: May not be suitable for roofs with limited load capacity.

Wind Sensitivity: Requires more ballast or additional anchoring in high-wind areas.

Limited Tilt Angles: Lower tilt angles can reduce solar efficiency.

Flat Roof Only: Not applicable for sloped or pitched roofs.

What is a Penetrating Mounting System?

Penetrating systems use bolts, screws, or anchors to secure the pv mounting structure directly into the roof or building substructure. They are suitable for flat or sloped roofs made from metal, tile, concrete, and more.

Pros:

Stronger Hold: Provides excellent wind resistance, especially for sloped or high-wind areas.

Lightweight System: No need for extra ballast, ideal for roofs with low weight tolerance.

Flexible Tilt Angles: Allows optimal panel positioning for higher energy output.

Broad Compatibility: Works with a wide range of roof types and materials.

Cons:

Roof Penetration Risk: Requires proper waterproofing to avoid leakage.

Longer Installation Time: Drilling and sealing add time and complexity.

Ongoing Maintenance: Roof seals should be inspected periodically.

May Require Engineering Approvals: Structural assessments may be needed depending on local codes.

Quick Comparison Table

Which One is Right for Your Project?

Choosing between ballasted and penetrating systems depends on several factors:

Roof type (flat or sloped?)

Structural load capacity

Local weather conditions (especially wind zones)

Installation timeline and budget

Waterproofing and long-term maintenance requirements

Final Thoughts

Both ballasted and penetrating mounting systems have their place in rooftop solar installations. At Xiamen TopFence Co., Ltd., we offer a wide range of solutions tailored to your specific project needs. Our business team can help you evaluate your site conditions and recommend the most cost-effective and reliable system.

Contact us today to discuss your rooftop solar project and receive a customized proposal!

We’re excited to share an exclusive update from our recent field visit to a cutting-edge vertical solar installation site in Norway! As a global provider of advanced solar mounting systems, HQMOUNT is proud to explore how Norway’s Arctic environment makes vertical solar a uniquely powerful solution.

Why Norway? The Vertical Advantage at High Latitudes

Norway’s geographic conditions — stretching up to 71°N latitude — present challenges that vertical solar technology turns into opportunities:

Low Sun Angle Optimization

Vertical-mounted panels are ideal for capturing the sun’s shallow trajectory in winter, ensuring optimal energy production even in low-light months.

Snow & Ice Resilience

Wall-mounted systems avoid snow burial and harness reflected light from snow-covered terrain.

24-Hour Summer Sun

Vertical panels mounting efficiently absorb extended horizontal light during Norway’s long dawns, dusks, and 24-hour sunlight periods.

Collaborating for Cold Climate Innovation

HQMOUNT is working closely with local Norwegian partners to deliver next-generation vertical solar systems designed specifically for extreme climates. These installations aim to transform walls into energy-generating assets, enabling sustainable power even in the world’s northernmost regions.

Together, we’re turning walls into energy assets!

CONTACT US---XIAMEN HQ MOUNT TECH CO.,LTD

Whatsapp : 18030160771

Tel : 86 05926252889

Email : allie@hqmount.com

#VerticalSolar #HQMOUNT #ArcticEnergy #CleanEnergyFuture #SolarMounting #NordicInnovation #NorwaySolar #CleanEnergyFuture #NordicSolar#RenewableTech

We’re proud to share a behind-the-scenes look at how HQ Mount powers solar energy projects worldwide with precision-engineered mounting solutions.  Check out our new HQ Mount 2025 video to see how SGS delivers precision-engineered solar mounting solutions：

As solar energy continues to expand across the globe, selecting the right materials for ground-mounted solar systems becomes a crucial decision for developers, EPCs, and asset owners. Two of the most common materials used in solar mounting structures are aluminum and steel—each offering unique benefits and trade-offs. But which one is better for your ground solar project? Let’s explore the key differences to help you make an informed decision.

1. Strength and Structural Integrity

Steel is significantly stronger than aluminum. It has a higher tensile strength and load-bearing capacity, making it an ideal choice for utility-scale solar farms or sites with harsh environmental conditions, such as heavy snow or strong winds. Galvanized steel (typically hot-dip galvanized) also resists corrosion over time when properly treated.

Aluminum, while not as strong as steel, is still suitable for many ground-mount applications, especially in small to medium-scale projects. It’s generally used in extruded profiles with optimized shapes that provide the necessary strength with less material.

 Choose steel when structural strength under load is a top priority.

2. Corrosion Resistance

Aluminum naturally forms a protective oxide layer, giving it excellent corrosion resistance—especially in coastal or highly humid environments. This makes it a go-to choice for areas prone to rust issues.

Steel, unless it is galvanized or coated, is more susceptible to corrosion. Hot-dip galvanization can significantly extend the lifespan of steel structures, but over time, corrosion might still occur, especially if coatings are damaged.

Choose aluminum for long-term corrosion resistance, particularly in coastal regions.

3. Weight and Handling

Aluminum is about one-third the weight of steel, making it easier and faster to transport, handle, and install. This can reduce labor costs and construction time on-site.

Steel, being heavier, typically requires heavier machinery and more manpower for installation. However, its rigidity often means fewer supports are needed.

for Choose aluminum for ease of installation and lightweight transport.

4. Cost

Steel is generally more cost-effective than aluminum on a per-kilogram basis. Even with galvanization, steel structures often offer a better price-performance ratio, especially for large-scale installations.

Aluminum is more expensive, but the added cost may be offset by reduced labor, faster installation, and lower maintenance over time.

Choose steel for budget-sensitive projects with robust construction teams.

5. Environmental Impact and Sustainability

Both materials are recyclable, but aluminum has a higher embodied energy (energy used in production). However, because it is lightweight and requires less maintenance, aluminum may have a lower overall lifecycle impact in some cases.

Steel is also widely recycled and has a mature global recycling infrastructure. Some developers may choose materials based on the availability of low-carbon steel or recycled aluminum.

Consider local availability and enviromental priorities when evaluating sustainability.

Final Verdict: Which Is Better?

There’s no one-size-fits-all answer. The best choice between aluminum and steel for ground solar mounting depends on your project size, environmental conditions, budget, and logistics.

When in doubt, consult with your solar mounting system supplier or structural engineer. A hybrid approach—using steel for foundations and aluminum for above-ground structures—is also gaining popularity as it combines the strengths of both materials.

As the solar industry continues its rapid expansion, durability and long-term reliability have become critical factors in solar mounting system design. Among the most trusted methods for protecting steel structures in outdoor installations is Hot-Dip Galvanizing (HDG). This treatment greatly enhances the durability of solar mounting systems, especially in ground-mounted applications such as C channel solar structures and single pile solar mounting systems. In this article, we explore how HDG steel adds lasting value to modern solar panel mounting solutions.

What Is Hot-Dip Galvanizing?

Hot-Dip Galvanizing is a process where fabricated steel parts are dipped into molten zinc. This forms a tough, tightly bonded zinc coating that shields the steel from corrosion. The result is a uniform, durable protective layer that extends the life of solar mounting systems, even under harsh environmental conditions.

Benefits of HDG for Ground Mount Solar Structures

1. Exceptional Corrosion Protection

Ground-mounted solar systems are often exposed to moisture, UV rays, soil chemicals, and varying temperatures. HDG-treated steel offers superior corrosion resistance, making it ideal for long-term outdoor installations. For example, C channel solar structures benefit from full-surface protection, including weld joints and internal edges.

2. Longevity and Low Maintenance

HDG extends the lifespan of steel components to 25–30 years or more with minimal maintenance. This is particularly valuable for single pile solar mounting systems, which are often used in utility-scale solar farms where maintenance access is limited and costly.

3. Strength and Structural Integrity

HDG enhances not just the lifespan but also the mechanical strength of components by preventing rust-related degradation. C channel solar structures—commonly used in fixed-tilt or adjustable angle arrays—must withstand heavy wind and snow loads. Hot-dip galvanizing ensures their continued performance throughout the project lifecycle.

4. Economic Efficiency Over Time

While HDG may have a slightly higher upfront cost than untreated or painted steel, its long-term durability eliminates the need for frequent repainting, repair, or replacement. This significantly lowers the total cost of ownership for large-scale solar installations.

Real-World Applications in Solar Mounting Solutions

Whether used in agricultural fields, desert zones, or coastal areas, HDG is a key component of reliable solar infrastructure. The following systems gain the most from this treatment:

C Channel Solar Structure (also known as C-Steel Ground Mounting System): These steel structures form the core frame of many ground-mount PV systems. Their C-shaped profile offers high strength and easy installation. HDG coating preserves their structural properties and prevents rust, ensuring project longevity.

Single Pile Solar Mounting System: Often deployed in utility-scale projects, this design relies on vertical posts driven into the ground. HDG treatment protects these load-bearing elements from soil corrosion and weathering over time.

Conclusion

Hot-Dip Galvanizing is a critical factor in the long-term performance and reliability of ground-mounted solar systems. Whether you’re deploying a single pile solar mounting system or a C channel solar structure, HDG steel solar mounts offer a resilient, cost-effective solution for modern solar panel mounting solutions.

By investing in galvanized steel, solar developers and EPCs not only safeguard their infrastructure but also align with sustainable and low-maintenance engineering practices.

In solar PV installations—especially on rooftops and in utility-scale fields—managing electrical cables effectively is as important as panel alignment or inverter placement. One common solution for cable support is the wire mesh cable tray, known for its open design and flexibility. But how do these trays hold up in harsh solar environments over time?

Let’s explore the durability of wire mesh cable trays and what installers, EPCs, and O&M professionals should consider when selecting and maintaining them.

What Makes Solar Environments Harsh?

Solar installations are subject to some of the most demanding environmental conditions:

Intense UV exposure

High temperature fluctuations (thermal expansion and contraction)

Rain, humidity, and water pooling

Salt-laden air in coastal regions

Dust and debris accumulation

Animal interference (birds, rodents, insects)

These elements can degrade poorly chosen materials and reduce the lifespan of cable trays and the critical cables they support.

Material Matters: Stainless Steel vs. Galvanized Steel

The durability of a wire mesh cable tray largely depends on the material it’s made from:

1. Electro-Galvanized (EG) Steel

Pros: Low cost, lightweight

Cons: Not suitable for outdoor or high-humidity environments

Use Case: Indoor or short-term use only

2. Hot-Dip Galvanized (HDG) Steel

Pros: Improved corrosion resistance compared to EG

Cons: Susceptible to rust in coastal or acidic environments

Use Case: Acceptable for inland rooftop systems if no salt exposure

3. Stainless Steel (SS304 or SS316)

Pros: Excellent corrosion resistance, long service life, ideal for coastal, industrial, and high-humidity environments

Cons: Higher upfront cost

Use Case: Best for harsh outdoor solar environments

Drainage and Airflow: Key Design Advantages

Wire mesh trays naturally allow:

Excellent drainage (prevents water pooling and corrosion)

Air circulation (reduces cable overheating)

Visual inspection and ease of maintenance

These features are particularly valuable on solar rooftops, where space is limited and trapped moisture can quickly cause damage.

Installation and Maintenance Best Practices

To maximize durability, consider the following:

Proper fastening: Secure trays with corrosion-resistant brackets and supports

Cable separation: Avoid overfilling trays; maintain proper spacing to prevent overheating

UV-resistant cable ties: Use stainless steel or UV-rated nylon for long-term cable securing

Protective covers: Install top covers where bird droppings, falling debris, or direct sun exposure are concerns

Regular inspection: Look for signs of rust, loosening, or animal intrusion

Wildlife and Environmental Protection

Wire mesh trays are often more exposed than enclosed trunking systems, so:

Consider adding bird guards or mesh covers to prevent nesting

Use conduit or protective sheathing on vulnerable cables in rodent-prone areas

Lifespan and ROI Consideration

While stainless steel wire mesh trays may cost more upfront, their resistance to corrosion, minimal maintenance requirements, and long operational lifespan often outweigh the initial investment—especially in long-term solar projects designed for 20–25 years.

Conclusion

Wire mesh cable trays can be highly durable in harsh solar environments if the right material is chosen and installation best practices are followed. For critical solar infrastructure, especially in corrosive or humid locations, stainless steel wire mesh trays are often the most reliable option, offering both physical robustness and long-term cost efficiency.

When it comes to installing solar systems in coastal areas, one of the most important factors to consider is durability. The harsh marine environment — with its high humidity, salt-laden air, and frequent storms — can cause rapid corrosion and structural degradation if materials are not properly selected. This raises an important question for EPC contractors, developers, and property owners: Is a Hot-Dip Galvanized (HDG) steel solar mounting system truly worth the investment in coastal regions?

What Is HDG Steel?

Hot-Dip Galvanized steel refers to steel that has been dipped into molten zinc to form a robust, corrosion-resistant coating. This zinc layer acts as both a physical barrier and a sacrificial anode, protecting the underlying steel from oxidation and corrosion.

Coastal Challenges for PV Mounting Systems

Coastal environments are among the most aggressive settings for solar installations. Here’s why:

Salt Spray: Salt in the air accelerates corrosion of exposed metal.

High Humidity: Increases the risk of rust and galvanic corrosion.

Wind Loads: Structures must withstand strong coastal winds and potential typhoons.

Maintenance Difficulty: Coastal corrosion may demand more frequent repairs and replacement if cheaper materials are used.

Without a proper corrosion-resistant system, solar projects near the coast may face costly structural failures and reduced system lifespan.

Benefits of HDG Steel in Coastal Areas

Superior Corrosion Resistance
HDG steel can last 20–50 years in most environments, and 15–25 years in highly corrosive coastal zones. This significantly outperforms standard pre-galvanized or painted steel components.

Low Maintenance Costs
HDG steel requires little to no maintenance compared to alternative coatings. This is especially important in remote or hard-to-reach installations.

Structural Strength
HDG steel maintains the mechanical strength of the base metal while providing long-term protection, making it ideal for heavy wind and weather conditions often found near the sea.

Whole-System Protection
The galvanization process coats the entire surface of the steel, including edges, corners, and hard-to-reach internal surfaces — areas that are often vulnerable in painted or plated systems.

Sustainable Investment
Although HDG systems can be more expensive upfront, they reduce lifecycle costs by minimizing replacement and repair needs. The investment is especially justified in harsh environments where cheaper materials may fail prematurely.

Considerations and Best Practices

Zinc Thickness Matters: Ensure the HDG system complies with standards such as ASTM A123 or ISO 1461. Thicker zinc coatings offer better longevity.

Avoid Galvanic Corrosion: Use compatible materials (e.g., stainless steel fasteners with isolators) to prevent reactions between dissimilar metals.

Regular Inspection: Even though HDG is highly durable, regular inspections can help identify early signs of wear in extreme coastal environments.

Conclusion

In coastal regions where corrosion is a constant threat, an HDG steel solar mounting system is not just a smart choice — it's a critical investment for long-term system performance and reliability. While the upfront cost may be higher compared to untreated or lightly coated systems, the durability, lower maintenance needs, and extended service life make it a cost-effective solution over time.

For solar projects built to last in challenging environments, HDG steel proves its worth.

If birds have started nesting under your rooftop solar panels—or you're trying to prevent that from happening—you’ve probably heard of solar solar panel bird mesh as an effective and long-lasting solution. But many homeowners and small installers wonder:

“Can I install it myself?”
“Do I need special tools?”
“Is it safe or difficult?”

The good news is: DIY installation is very doable, even for first-timers, and it requires only basic tools. Here’s a breakdown of what to expect and how to prepare.

How Difficult Is DIY Bird Mesh Installation?

On a difficulty scale from 1 to 10, bird mesh installation usually falls around a 3 or 4 for most people with basic handyman skills.

You don’t need to drill into your solar panels or roof.
The mesh clips or fasteners are designed to be non-invasive and easy to attach.
Most installations can be completed in 2–4 hours depending on the size of your solar array.

However, working at heights is the main challenge. If you’re not comfortable using a ladder or working on your roof safely, you may want to hire a professional.

What Tools Are Needed?

Here’s what you’ll typically need for a standard DIY bird mesh installation:

Basic Tools:

Ladder or roof access (with safety harness if required)

Work gloves – to protect your hands from sharp wire edges

Wire cutters or aviation snips – for cutting the mesh to fit

Tape measure – to measure and cut accurate lengths of mesh

Zip ties or pliers – for fastening or adjusting clips

Protective eyewear – especially if cutting metal mesh

Optional but Helpful:

Cordless drill – only if you're using screw-in clips or grounding lugs

Rooftop anchor kit – for safety if working on steep or slippery roofs

Caulking gun – if you want to seal the mesh edges for extra protection (optional)

Step-by-Step Overview

Measure the perimeter around your solar array.

Cut the bird mesh into manageable strips (e.g. 2–3 meters).

Attach the mesh using bird mesh clips, securing it to the panel frame—not the roof or the glass.

Overlap mesh sections slightly to ensure there are no gaps.

Inspect the installation for weak spots and adjust if needed.

Tip: Avoid overtightening clips which might bend the mesh or frame.

When Should You Call a Professional?

While DIY is realistic for many, you should consider hiring a pro if:

Your panels are on a steep or high roof

You don’t have the right safety equipment

You’re uncomfortable with tools or heights

You have a large system with dozens of panels

Safety always comes first. In some cases, paying for a professional installation can save you time—and possible injuries.

Final Thoughts

Installing bird mesh yourself isn’t as intimidating as it sounds. With the right tools and some basic precautions, you can protect your solar investment from bird damage and reduce long-term maintenance costs.

Whether you’re a DIY homeowner or a solar installer looking to offer bird-proofing as a value-add service, a well-installed bird mesh is a smart upgrade.