Fakro DMC-C P4 Secure Manually Operated Double Glazed Domed Flat Roof Window

Fakro DMC-C P4 Secure Manually Operated Double Glazed Domed Flat Roof Window

The Fakro DMC-C P4 Secure Manually Operated Double Glazed Domed Flat Roof Window is designed for flat-roof spaces where security, natural daylight and reliable ventilation all matter. Its combination of secure double glazing, a durable polycarbonate dome and simple manual operation makes it a practical choice for both residential and commercial properties. Built with security in mind, the DMC-C P4 features P4A laminated anti-burglary glazing and is certified to RC2 security class (EN1627). At the same time, its insulated construction helps limit heat loss, while the manual opening mechanism makes it easy to bring fresh air into the room whenever required.

Enhanced Security with P4A Glazing

Security is one of the key strengths of the DMC-C P4. It features P4A anti-burglary laminated internal glass and is certified to RC2 security class in accordance with EN1627. This provides increased resistance against impact and unauthorised access, making it suitable for properties where additional security is important.

Excellent Thermal Performance

The Fakro DMC-C P4 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 reduce heat transfer through the roof and supports a more comfortable indoor environment throughout the year.

Durable UV-Protected Dome

The polycarbonate dome features UV-resistant coatings on both its inner and outer surfaces. This helps protect the material from yellowing, fading and degradation caused by prolonged sunlight exposure, supporting its appearance and performance over time.

Simple Manual Operation

The DMC-C P4 provides straightforward manual control, allowing you to open and close the roof window whenever ventilation is needed. This makes it easy to refresh the room with natural airflow without the need for an electrical operating system.

Insulated UPVC Kerb Upstand

The window is supplied with a 150mm insulated PVC kerb upstand, providing a strong and stable foundation for installation. The insulated construction also helps improve thermal performance around the rooflight and contributes to a more energy-efficient installation.

Improved Acoustic Comfort

With an acoustic rating of 35dB (-1, -3), the DMC-C P4 helps reduce external noise entering the room. This can make the interior feel quieter and more comfortable, particularly in areas where outside noise is a consideration.

Flexible Flat Roof Installation

The Fakro DMC-C P4 is suitable for flat roof pitches between 0° and 15°, allowing it to be used across a variety of building designs and project types. Its combination of daylight, ventilation and security makes it suitable for homes, offices and commercial spaces.

Low-Maintenance Construction

Made from durable and weather-resistant materials, the DMC-C P4 is designed to provide dependable performance with minimal upkeep. The UV-protected dome and robust frame help it withstand regular exposure to outdoor conditions while maintaining its functionality.

Available Sizes

The Fakro DMC-C P4 Secure Manually Operated Double Glazed Domed Flat Roof Window is available in four sizes, providing options for different room layouts and daylight requirements.

• 900 x 900mm
• 900 x 1200mm
• 1000 x 1000mm
• 1000 x 1500mm

Key Benefits

• Manual operation for convenient natural ventilation
• P4A laminated anti-burglary internal glazing
• Certified to RC2 security class (EN1627)
• Whole-window U-value of 1.2 W/m²K
• Glass U-value of 1.1 W/m²K
• UV-resistant polycarbonate dome
• 35dB (-1, -3) acoustic rating
• 150mm insulated PVC kerb upstand
• Suitable for flat roof pitches between 0° and 15°
• Durable, weather-resistant construction
• Low-maintenance design
• Available in four sizes

Frequently Asked Questions

What makes the Fakro DMC-C P4 a secure flat roof window?

The DMC-C P4 features P4A laminated anti-burglary internal glass and is certified to RC2 security class according to EN1627. This provides enhanced resistance against impact and unauthorised access.

Is the Fakro DMC-C P4 manually operated?

Yes. The DMC-C P4 uses a simple manual opening mechanism, allowing you to control ventilation by opening and closing the roof window as required.

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

The Fakro DMC-C P4 is available in four sizes: 900 x 900mm, 900 x 1200mm, 1000 x 1000mm and 1000 x 1500mm.

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.