Cure-It GRP Topcoat

Complete your GRP roofing project with the Cure-It GRP Standard Topcoat, a high-quality finishing layer designed to protect and enhance your fibreglass roof. Specially formulated to work in tandem with the Cure-It GRP roofing system, this topcoat provides a durable, attractive surface that stands up to the elements all year round. Whether you're a professional installer or tackling a roofing project yourself, the Cure-It Topcoat is easy to apply and built to last. With excellent weather resistance, UV protection, and fire safety certification, it’s the go-to choice for flat roofing finishes that not only perform well but also look the part.

Key Features & Benefits

Tough & Flexible Finish – Adapts to seasonal temperature changes, protecting your roof through summer heat and winter frost. UV Resistant – Helps maintain the colour and integrity of the GRP system, preventing fading and long-term degradation. Low Styrene Emissions – Minimises harmful vapours during application, making it safer for users and the environment. Fire Rated – Meets BS476-3:2004 (EXT.F.AB) fire safety standard, suitable for use on a wide variety of roofing projects. Manufacturer-Backed Guarantee – Comes with a 20-year guarantee for added peace of mind. Smooth Professional Finish – Seals and protects the roof while improving appearance.

Available Sizes & Coverage

Choose the right tin size for your project: 5kg – Covers approx. 12.5m² 10kg – Covers approx. 25m² 20kg – Covers approx. 50m²

Colour Options

Graphite Clear White These colour options allow you to match or complement your building's style while still benefiting from the same strong protection.

Frequently Asked Questions (FAQs)

Can I use the Cure-It Topcoat without the GRP base layers?

No – the topcoat is specifically designed to work as part of the full Cure-It GRP roofing system and should always be applied over the cured laminate layer.

How long does it take for the topcoat to cure?

Under normal weather conditions, the Cure-It GRP Topcoat will surface cure within 30–60 minutes, although full curing may take longer depending on temperature and humidity.

Is the topcoat safe to apply in residential areas?

Yes – the topcoat has low styrene emissions, making it safer for use in both residential and commercial areas when applied with appropriate ventilation and safety precautions.

Check out our full range of roofing supplies.

Browse more flat roofing available online.

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
• A trusted business backed by the JJ Roofing Supplies Group.
  

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.