How to Maintain and Repair Fibreglass Roofs: Expert Tips

Fibreglass roofing is a popular choice in both residential and commercial buildings due to its durability, weather resistance, and low maintenance requirements. However, like any roofing material, it needs proper care to ensure a long service life. In this guide, you’ll learn how to maintain and repair fibreglass roofs with expert-approved tips. Whether you are a homeowner or a facilities manager, these strategies will help you prevent costly issues and keep your roof in top shape.

Why Choose Fibreglass Roofing?

Fibreglass roofs, also known as GRP (Glass Reinforced Plastic) roofs, are:

• Waterproof and weather-resistant.
• Long-lasting (up to 25 years with proper maintenance).
• Lightweight and easy to install.
• Seamless and aesthetically pleasing.

Fibreglass roofing panels are handy in commercial settings due to their strength and minimal maintenance needs. If you’re planning a new installation or roof upgrade, consider hiring the best roofers in London for a professional finish.

Common Issues with Fibreglass Roofs

While fibreglass roofing is tough, it can face the following issues:

• Hairline cracks due to thermal expansion and contraction.
• Surface blistering is caused by trapped moisture.
• Poor adhesion leads to delamination.
• Damage from heavy foot traffic or sharp objects.

Most of these problems can be resolved with timely fibreglass roof repair.

Routine Maintenance Tips for Fibreglass Roofs

1. Clean Your Roof Twice a Year

Dirt, moss, and debris can accumulate and affect water drainage.

Steps:

• Use a soft-bristle broom or brush.
• Rinse with a hose (avoid pressure washers).
• For commercial buildings, hire floor cleaning services in London that also offer rooftop or high-access cleaning.

2. Inspect for Cracks and Blisters

Check your roof at least twice a year and after extreme weather.

Look for:

• Fine cracks near edges or outlets.
• Raised bubbles or uneven surfaces.

3. Check Flashings and Joints

These are common leakage points. Make sure:

• The seals are intact.
• No signs of wear, especially around skylights and vents.

4. Ensure Proper Drainage

Standing water can weaken the fibreglass surface.

Tips:

• Keep gutters clean.
• Ensure the roof gradient directs water toward drains.

5. Avoid Heavy Foot Traffic

If access is needed:

• Use crawl boards.
• Wear soft-soled shoes.
• Limit access to maintenance personnel only.

DIY Fibreglass Roof Repair: Step-by-Step

If you notice minor cracks or delamination, you can perform small repairs yourself.

Tools and Materials:

• Fibreglass mat and resin kit.
• Sandpaper (60–80 grit).
• Acetone for cleaning.
• Paintbrush and protective gloves.

Repair Steps:

Step 1: Clean the Damaged Area

• Remove dirt and debris.
• Wipe with acetone to remove oils.

Step 2: Sand the Surface

• Roughen the area around the crack.
• This helps the resin bond properly.

Step 3: Cut and Place the Fibreglass Mat

• Cut to a size slightly larger than the crack.
• Lay it over the damaged spot.

Step 4: Apply Resin

• Mix resin and hardener according to instructions.
• Use a brush to coat the surface and mat.

Step 5: Let It Cure

• Leave it untouched for 24 hours.
• Check the seal afterwards for any gaps.

Step 6: Apply Topcoat (Optional)

• For UV resistance and finish, apply a topcoat.

Pro Tip: For extensive repairs, leaks, or multiple damaged areas, it’s best to hire the best roofers in London with experience in fibreglass systems.

Professional Repair Services: When to Call an Expert

Some fibreglass roofing issues require more than a DIY fix.

Call a roofing professional if:

• You see widespread blistering or delamination.
• Leaks persist even after patch repairs.
• The roof was improperly installed and has recurring issues.

Expert fibreglass roof repair ensures long-term performance and often comes with a service warranty.

How Commercial Properties Can Benefit from Regular Roof Maintenance

For commercial buildings, roof integrity is critical to daily operations. Combining roofing care with other building maintenance services, like commercial floor fitters in London or floor cleaning services in London, ensures a holistic approach to facility upkeep.

Why it’s important:

• Reduces downtime from leaks or emergency repairs.
• Enhances safety and compliance.
• Preserves asset value.

Recommended schedule:

• Bi-annual inspections.
• Annual resealing if needed.
• Emergency inspections after storms or structural changes.

Fibreglass Roofing Maintenance Table

Final Thoughts: Keep Your Fibreglass Roof in Prime Condition

A well-maintained fibreglass roof can protect your property for decades. Regular inspections, proper cleaning, and timely repairs can prevent bigger issues down the road. Whether you’re handling minor touch-ups yourself or hiring professionals for extensive work, staying proactive is key.

If you’re managing a commercial property, consider integrating roof care into your broader maintenance strategy with services from commercial floor fitters in London or floor cleaning services in London.

Need expert help? Don’t wait for a leak to ruin your space. Reach out to the best roofers in London today for a thorough fibreglass roof inspection or repair quote.

The proper maintenance today prevents expensive repairs tomorrow. Stay ahead with regular care and expert support for your fibreglass roofing needs.

FAQs About Fibreglass Roof Repair and Maintenance

Q1: Can fibreglass roofs be walked on?
A: Yes, but only when necessary and with protective measures like crawl boards to prevent surface damage.

Q2: How long does fibreglass roofing last?
A: With proper care, fibreglass roofs can last up to 25–30 years.

Q3: Is fibreglass roofing suitable for flat roofs only?
A: It is best suited for flat and low-pitch roofs, common in garages, extensions, and commercial buildings.

Q4: How much does fibreglass roof repair cost in London?
A: Minor repairs can cost around £200–£500, while major restoration may exceed £1500. Always get quotes from the best roofers in London.

Q5: What is the drying time for fibreglass roof resin?
A: Typically, the curing time is 24 hours, depending on temperature and humidity.