In-Roof vs. Above-Roof Solar Panels: Which is Right for You?
As solar energy continues to revolutionise the way we power our homes and businesses, choosing the right type of solar panel installation is a crucial decision. Whether you opt for in-roof (integrated) solar panels or above-roof (on-roof) solar panels, both offer significant energy-saving benefits. But which one is right for you?
At Blue Ape Renewables, we provide expert guidance on solar PV installations, helping homeowners, businesses, and developers choose the most efficient, cost-effective, and aesthetically pleasing solution.
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What’s the Difference Between In-Roof and Above-Roof Solar PV?
In-Roof (Integrated) Solar PV
In-roof panels are designed to replace your existing roof tiles, sitting flush with the roofline for a sleek, integrated look. They become part of the roof structure itself.
- How it works: The panels replace tiles, creating a seamless, low-profile finish.
- Best for: New builds, reroofing projects, and properties in conservation areas where aesthetics are paramount.
Above-Roof (On-Roof) Solar PV
This is the most common type of installation. The panels are mounted on a frame that sits on brackets attached to the roof’s rafters, sitting slightly above your existing tiles.
- How it works: Panels are mounted on top of existing tiles using secure brackets and rails.
- Best for: Most retrofit projects, cost-effective installations, and maximising energy efficiency.
Pros & Cons of In-Roof Solar Panels
Advantages of In-Roof Solar PV
- Superior Aesthetics: Blends seamlessly with the roof for a minimalist, modern look.
- New Build Friendly: Perfect for new builds or when you’re already replacing your roof.
- Good Wind Resistance: The flush design can offer better resistance to wind uplift.
Disadvantages of In-Roof Solar PV
- Potentially Lower Efficiency: The lack of airflow underneath can cause panels to get hotter, which may slightly reduce energy generation.
- Higher Installation Cost: Generally more expensive due to the specialist mounting and roofing work required.
- Complex to Upgrade: More difficult to add to or replace panels later.
💡 Best Use Case: If you are building a new home or undergoing a full reroof, in-roof solar is a smart, aesthetically pleasing long-term investment.
Pros & Cons of Above-Roof Solar Panels
Advantages of Above-Roof Solar PV
- Higher Efficiency: The gap between the panel and the roof allows for constant airflow, keeping the panels cooler and optimising energy production.
- Lower Installation Cost: A more standard, quicker, and less complex installation process.
- Flexible & Easy to Maintain: Panels can be easily accessed, replaced, or upgraded without disturbing the roof structure.
- Versatile: Can be installed on almost any existing pitched or flat roof.
Disadvantages of Above-Roof Solar PV
- More Visible: The panels sit above the roof and are more noticeable than in-roof systems.
💡 Best Use Case: For most homeowners retrofitting solar to an existing roof, above-roof panels offer the best balance of efficiency, cost, and flexibility.
At a Glance: In-Roof vs. Above-Roof
| Feature | In-Roof (Integrated) | Above-Roof (On-Roof) |
|---|---|---|
| Aesthetics | Seamless, low-profile | Sits on top of tiles, more visible |
| Efficiency | Good (can be lower due to heat) | Excellent (better ventilation) |
| Cost | Higher | Lower (Standard) |
| Best For | New builds, reroofs, aesthetics | Most retrofits, max efficiency |
| Maintenance | More complex | Easier to access & replace |
Why Choose Blue Ape Renewables?
At Blue Ape Renewables, we specialise in tailored solar PV solutions and can install both in-roof and above-roof systems to the highest standard.
- Certified UK installers with nationwide coverage.
- Fixed-price quotations and transparent service.
- SolarEdge & battery integration specialists.
- Rated Excellent on Trustpilot.
Frequently Asked Questions (FAQ)
1. Are in-roof solar panels more expensive?
Yes, in-roof solar panels typically cost more due to the specialist mounting system and additional roofing work required.
2. Are in-roof panels less efficient?
They can be slightly less efficient. The lack of airflow underneath can cause the panels to get hotter, and high temperatures can modestly reduce energy production compared to a well-ventilated above-roof system.
3. Do I need planning permission for solar panels?
For most homes, no planning permission is required for either type as they fall under Permitted Development. However, restrictions apply in listed buildings or conservation areas, where an in-roof system may be preferred by planners.
4. Can I add battery storage to either system?
Yes! Both in-roof and above-roof solar systems can be fully integrated with battery storage, allowing you to store excess energy for use at night.
5. What if I am replacing my roof anyway?
If you are already planning a reroof, this is the perfect time to consider an in-roof system. The cost will be more effective as scaffolding and labour are already in place.
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