When considering a solar PV installation, many homeowners and businesses focus solely on panel efficiency, system size, and energy savings—but one of the most critical factors is often overlooked: the condition of the roof.

Before installing solar panels, it's essential to ensure that your roof is structurally sound, waterproof, and built to last. Otherwise, you may face expensive complications later, as removing and reinstalling solar panels for roof repairs can be time-consuming and costly.

At Blue Ape Renewables, we specialise in GRP roofing solutions, ensuring your roof is in perfect condition before solar PV installation. Whether you're considering flat roof solar, pitched roof solar, or a commercial solar PV system, investing in GRP roofing can extend the lifespan of your roof and provide a reliable, weatherproof base for your solar panels.

 

Why You Should Check Your Roof Before Installing Solar PV

Many homeowners are unaware that their roof may not be suitable for solar panels. Issues such as:

🚨 Aging Roofs – If your roof is nearing the end of its lifespan, it may need replacing before solar installation.
🚨 Leaks & Weak Spots – Water damage or structural issues can lead to expensive repairs later.
🚨 Weight Load Concerns – Solar PV panels add weight; your roof must be structurally sound to support them.
🚨 Future Maintenance Costs – Fixing a roof after solar installation means removing and reinstalling panels, increasing costs significantly.

💡 Top Tip: A roof inspection before installing solar PV can save thousands in future repair costs!

 

GRP Roofing: The Ideal Choice for Solar PV Installations

GRP roofing (Glass Reinforced Plastic), also known as fibreglass roofing, is one of the best solutions for solar panel installations.

✔ 100% Waterproof – Ensures leak-free performance for decades.
✔ Extremely Durable – Withstands extreme weather, UV exposure, and high foot traffic.
✔ Long Lifespan (25+ Years) – Outlasts felt and EPDM rubber roofing.
✔ Perfect for Flat Roof Solar – Provides a solid, non-slip surface for solar panel mounting.
✔ Seamless & Maintenance-Free – No joints, no leaks, no problems!

💡 Did You Know? GRP roofing is the same material used in boat hulls because of its incredible durability and waterproofing properties!

 

Why GRP Roofing & Solar PV Work Perfectly Together

 

1️⃣ Long-Term Durability to Match Solar Panel Lifespan

• A GRP roof lasts 25+ years, while solar panels have a lifespan of 25-30 years.


• By upgrading to GRP roofing before solar installation, you ensure your roof lasts as long as your solar panels.

💡 Fact: Installing solar on an aging roof means removing panels for repairs within 10-15 years, adding unnecessary costs.

2️⃣ Maximum Waterproofing for Leak-Free Solar Installations

• GRP roofing provides a 100% seamless, watertight surface, preventing leaks.


• Solar panels create mounting points, and weak roofing materials can lead to water ingress over time.

💡 Fact: Water damage from leaks can reduce solar panel efficiency and damage your home’s insulation!

3️⃣ Structural Strength for Secure Solar Panel Fixings

• GRP roofing is highly resistant to stress and impact, making it ideal for securely mounting solar panels.


• Unlike felt or EPDM rubber roofing, GRP won't tear or degrade under solar panel brackets.

💡 Tip: Solar panels should be securely mounted with penetration-free fixing systems, which GRP roofing can accommodate perfectly.

4️⃣ Suitable for Commercial & Residential Solar PV Systems

• GRP roofing is commonly used for flat roofs on commercial buildings, schools, and industrial units, where large solar PV systems are installed.


• Homeowners with flat roof extensions, garages, or dormers can also benefit from solar-ready GRP roofing.

💡 Fact: GRP roofing can be finished with anti-slip coatings, making it safe for maintenance access and solar panel inspections.

 

How Much Can You Fit on a Flat Roof GRP System?

💡 Source: Energy Saving Trust (2024) – Estimated savings based on typical solar PV performance.

 

Frequently Asked Questions (FAQ)

1️⃣ Do I need to replace my roof before getting solar panels?
Not always, but if your roof is over 10-15 years old or shows signs of wear, a GRP roof upgrade is recommended before installation.

2️⃣ How long does GRP roofing last?
A properly installed GRP roof can last 25-50 years, making it one of the longest-lasting roofing materials.

3️⃣ Can I install solar panels on a GRP roof?
Yes! GRP roofing is perfect for solar panel installations, providing a strong, weatherproof base for mounting systems.

4️⃣ How much does GRP roofing cost compared to felt roofing?
While GRP roofing has a slightly higher upfront cost, it lasts twice as long as felt, making it a better long-term investment.

5️⃣ Is GRP roofing waterproof?
Yes! GRP is 100% seamless and watertight, preventing leaks for decades.

6️⃣ Can GRP roofing handle foot traffic for solar maintenance?
Yes! GRP can be installed with non-slip coatings, making it safe for solar panel inspections and maintenance.

7️⃣ Do I need planning permission for a GRP roof?
No! GRP roofing does not require planning permission as long as it doesn’t alter the building’s structure.

8️⃣ Can GRP roofing be installed in winter?
Yes, but dry weather conditions are best for installation to ensure proper curing.

9️⃣ How do I know if my roof needs replacing before solar installation?
Contact Blue Ape Renewables for a free roof survey and solar assessment.

🔟 Can Blue Ape Renewables install both GRP roofing and solar PV?
Yes! We provide a complete solar-ready roofing and installation service, ensuring your system is built for long-term durability.

 

Get Your Roof Solar-Ready with Blue Ape Renewables!

📞 Call us today for a free consultation: 0151 452 4085
📧 Email us: info@blueaperenewables.co.uk

🚀 Ensure your roof is ready for solar PV—upgrade to GRP roofing with Blue Ape Renewables today!