Fakro DXC-C P4 Secure Non-Opening Double Glazed Domed Flat Roof Window

Fakro DXC-C P4 Secure Non-Opening Double Glazed Domed Flat Roof Window

The Fakro DXC-C P4 Secure Non-Opening Double Glazed Domed Flat Roof Window is designed to bring natural daylight into flat-roof spaces while providing a strong focus on security, insulation and durability. Its fixed, non-opening construction makes it ideal for areas where ventilation is not required, but you still want a bright and comfortable interior. Combining secure double glazing with a durable, UV-protected polycarbonate dome, the DXC-C P4 provides a practical daylighting solution for homes, offices and commercial buildings. Its clean design and robust construction make it suitable for projects where reliable performance and low maintenance are important.

Enhanced Security with P4A Glazing

Security is at the heart of the DXC-C P4. The window features P4A laminated anti-burglary glazing, offering a higher level of resistance to impact and attempted intrusion. This makes it a suitable option for spaces where additional security is an important consideration alongside natural daylight.

Excellent Thermal Performance

The DXC-C P4 is designed to help minimise heat transfer through the roof. It achieves a whole-window U-value of 1.2 W/m²K, while the glass has a U-value of 1.1 W/m²K. This helps support a comfortable indoor environment throughout the year and can contribute to improved energy efficiency.

Durable UV-Protected Dome

The polycarbonate dome is protected against UV exposure on both sides. This helps prevent discolouration over time while maintaining good daylight transmission. The durable dome provides an additional layer of protection for the glazing and is designed to withstand regular exposure to outdoor conditions.

Insulated UPVC Kerb Upstand

The Fakro DXC-C P4 is supplied with a 150mm insulated UPVC kerb upstand. This provides a strong and stable foundation for the roof window while contributing to its overall thermal performance and insulation.

Fixed Non-Opening Design

The fixed construction means the DXC-C P4 does not provide ventilation. Instead, it is designed specifically to bring natural light into rooms where opening the roof window is not necessary. With no moving opening mechanism, the design also helps keep maintenance requirements to a minimum.

Flexible Installation

The DXC-C P4 is suitable for flat roofs with pitches between 0° and 15°, making it adaptable to a variety of roof designs and building types. An optional 15cm raised base can also be used where additional installation height is needed or where it suits the construction of a deeper roof structure.

Compatible with Accessories

For greater control over light and comfort, the DXC-C P4 is compatible with suitable internal and external accessories, including blinds and shading options. This allows the roof window to be tailored to the needs and appearance of the room.

Available Sizes

The Fakro DXC-C P4 Secure Non-Opening Double Glazed Domed Flat Roof Window is available in four sizes, providing options for different daylighting requirements and roof layouts.

• 900 x 900mm
• 900 x 1200mm
• 1000 x 1000mm
• 1200 x 1200mm

Key Benefits

• Fixed, non-opening design for secure natural daylight
• P4A laminated anti-burglary glazing for enhanced security
• Whole-window U-value of 1.2 W/m²K
• Glass U-value of 1.1 W/m²K
• UV-protected polycarbonate dome
• 150mm insulated UPVC kerb upstand
• Suitable for flat roofs with pitches between 0° and 15°
• Optional 15cm raised base for additional installation flexibility
• Compatible with suitable internal and external accessories
• Low-maintenance fixed construction
• Available in four sizes

Frequently Asked Questions

Is the Fakro DXC-C P4 a non-opening roof window?

Yes. The Fakro DXC-C P4 has a fixed, non-opening construction. It is designed to provide natural daylight without ventilation, making it suitable for rooms where a sealed rooflight is preferred.

What makes the Fakro DXC-C P4 secure?

The window features P4A laminated anti-burglary glazing, which is designed to provide increased resistance against impact and intrusion. The fixed construction also means there are no opening mechanisms to operate or maintain.

What sizes is the Fakro DXC-C P4 available in?

The Fakro DXC-C P4 is available in four sizes: 900 x 900mm, 900 x 1200mm, 1000 x 1000mm and 1200 x 1200mm.

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.
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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.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.

Multiple Products from the Same Supplier

If you're ordering multiple products from the same supplier, your order will be dispatched together once all items are ready. This means the longest lead time will apply.

If you need part of your order sooner, please call us on 01202 113233. We can arrange a split delivery, although an additional shipping charge will apply.