Solar Panels Mounting Methods Explained

Solar panels are an excellent way to generate clean energy, reduce electricity costs, and increase energy independence. However, choosing the right mounting system plays a key role in a successful installation.

Solar panels can be installed on roofs, walls, poles, the ground, vehicles, or boats. In this guide, we briefly explain how solar panel installation works, the different types of mounting systems available, and where each solution is best suited.

Roof Mounted Solar Panels

Flat Roofs

Flat roofs are common on both residential and commercial buildings. Solar panels on flat roofs can be installed using ballasted or mechanically fixed systems, but all systems will generally include rails to support the panels.

• Ballasted systems: Panels sit on angled supports held in place by ballast blocks. Short rails or adapters are often used to secure the panels to the supports. No roof penetration is needed.
• Mechanically fixed systems: Rails are directly fixed to the roof using adaptors or base rails. These provide a stable mounting point for the panels while maintaining waterproofing.

In both cases, the mounting system should be angled slightly to improve sunlight exposure and overall performance as shown below.

Pitched Roofs

Pitched roofs are very common in the UK, often covered with slate or tiles, but they can also be concrete, wooden, or steel. Installing solar panels on these roofs requires careful handling and the right mounting system for each roof type.

• Slate and tile roofs:
  • Roof hooks or plates are installed under the tiles or slates to securely anchor the mounting rails.
  • Rails are attached to the hooks, providing a stable structure for the panels.
  • Solar panels are then clamped onto the rails.
• Concrete, wooden, or steel roofs:
  • Rails are mounted on hangers or brackets that are drilled directly into the roof structure.
  • Panels are clamped to the rails as usual.

Ground Mounted Solar Panels

Ground-mounted solar panels are typically installed on ballasted or framed systems directly on the land. These systems share many features with flat-roof mounts but are designed for open-ground conditions.

• Frames and rails are secured to the ground using ballast weights or foundation posts, providing a stable base for the panels.
• Panels are then mounted onto the rails or brackets, usually at a tilted angle to maximise sunlight exposure.
• Side plates or wind deflectors are often added to protect the array from wind uplift and ensure long-term stability.
• The spacing, tilt, and ballast distribution are carefully calculated to avoid shading, maintain structural integrity, and optimise performance.

Pole Mounted Solar Panels

Pole mounted solar panels are elevated above ground level to provide power to appliances that are usually located off the ground, such as sensors, CCTV cameras, or traffic lights as shown below. Elevating panels also helps reduce the risk of theft or accidental damage.

• The solar panel can then be angled for optimal sunlight exposure, ensuring maximum efficiency.
• The panel is attached to a mounting bracket that is fixed to the pole.
• In some cases, a hose clamp or U-bolt is used to secure the bracket to the pole or wall.
• We can professionally install pole mounted solar panels, contact us for more information.

Wall Mounted Solar Panels

Although less common, wall-mounted solar panels are a practical solution when roof space is limited or for vertical installations.

• Panels are secured to the wall or fence using straps or wall mounted brackets (drilled to the wall).
• When possible, panels can be angled slightly to maximise sunlight exposure..
• This type of installation is more common in DIY projects than in commercial setups.

Mobile Solar Panel Mounting

As illustrated in the images below, there are several methods for mounting solar panels on vehicles or boats. The best choice typically depends on customer preference, design constraints, and available roof space, with costs generally being comparable across the different options.

Vehicles like RVs, campervans

• Flexible panels can be glued directly to the roof using adhesive.
• Rigid panels can be mounted using Square brackets glued to the roof or Z brackets screwed directly into the roof
• Panels can also be slightly tilted to improve efficiency, depending on roof space and feasibility.

Boats

• Mounting is similar to RVs: panels can be glued or screwed using brackets.
• Tilt mounted systems are more common on boats to optimise solar exposure when stationary.

Conclusion

No matter whether you’re installing solar panels on a flat roof, pitched slate or tile roof, pole, wall, or even a vehicle or boat, choosing the right mounting system, rails, and brackets is key to ensuring durability, efficiency, and long-lasting performance.

With careful installation, your solar panels can provide reliable, sustainable power for decades.