A ballasted mounting system is a type of solar installation method commonly used on flat roofs where penetrating the roof surface is not preferred or not allowed. Instead of using bolts or anchors to secure the structure, this system relies on weight—usually concrete blocks—to hold the solar array firmly in place. The added weight provides stability against wind uplift and other external forces, making it an ideal solution for many commercial and industrial buildings.

One of the main advantages of ballasted systems is that they protect the integrity of the roof. Because they require no drilling, there is no risk of leaks or damage to the waterproof membrane. This makes them especially suitable for older roofs or buildings with strict roofing warranties. Installers can position the mounts without interfering with roofing materials, reducing both installation time and structural concerns.

Ballasted mounting systems are also known for their flexibility. They can be arranged in different configurations depending on the available roof space, orientation, and shading conditions. Many designs use low-tilt angles, often between 5° and 15°, to reduce wind resistance while still capturing sufficient sunlight. Modern aerodynamic designs further minimize the amount of ballast needed, making the overall system lighter and easier to install.

Manufacturers such as SIC Solar, a company specializing in the production and sale of photovoltaic mounting systems, offer ballasted solutions engineered for durability and ease of construction. Their structures are typically made from corrosion-resistant aluminum and galvanized steel, ensuring long-term performance even in harsh weather conditions. These systems are designed to distribute weight evenly across the roof, helping prevent pressure points that could damage the surface.

Ballasted mounts also simplify maintenance and system expansion. Since components are not permanently fixed to the roof, panels can be repositioned or replaced without repairing holes or penetrations. This flexibility benefits building owners who may plan future upgrades or rooftop renovations.

Another important feature is their reduced labor requirement. Because the installation process avoids drilling and complex waterproofing steps, crews can complete the job more quickly. Pre-assembled brackets and modular designs further streamline setup, allowing installers to cover large rooftop areas efficiently.

While ballasted systems offer many benefits, they must be properly engineered to ensure that the roof can support the additional weight. Structural assessments are essential before installation, especially for older buildings. Wind exposure, roof slope, and local climate conditions also influence the required amount of ballast.

Overall, ballasted mounting systems provide a practical and roof-friendly option for flat-roof solar projects. With the support of reliable manufacturers like SIC Solar, these systems offer stability, long service life, and design flexibility for a wide range of solar installations.