Fakro DMF-D U8 Manually Operated Flat Roof Window

Fakro DMF-D U8 Manually Operated Flat Roof Window

The Fakro DMF-D U8 Manually Operated Flat Roof Window is a high-performance solution for bringing natural daylight and fresh air into modern residential and commercial spaces. With its manually operated design and advanced quadruple glazing, it provides convenient ventilation alongside excellent thermal insulation, helping create a comfortable and energy-efficient interior.

Simple Manual Ventilation

The DMF-D U8 is designed for straightforward manual operation, allowing you to open the window whenever fresh air is needed. This gives you direct control over ventilation without relying on an electrical opening system, making it a practical choice for everyday use.

High-Performance Quadruple Glazing

The window features quadruple glazing with toughened external glass and laminated anti-burglary internal glass rated P2A or higher. This advanced glazing configuration provides a strong combination of thermal insulation, durability and security while allowing natural light to enter the room. The entire window can achieve a U-value as low as 0.64 W/m²K, helping to limit heat loss through the roof and support improved energy efficiency throughout the year.

Enhanced Acoustic Comfort

Alongside its strong thermal performance, the Fakro DMF-D U8 provides sound insulation of up to 34dB (-1, -3). This can help reduce external noise and create a more peaceful indoor environment, making the window suitable for a range of living and working spaces.

Durable Insulated Frame

The DMF-D U8 is supplied with a 150mm multi-chamber UPVC kerb upstand finished in RAL9010 white PVC. The robust construction provides strength and rigidity while supporting the window's thermal performance for dependable long-term use.

Contemporary Design

The window combines its practical features with a modern architectural finish. The RAL9005 black profiles and dark-edge glazing effect give the Fakro DMF-D U8 a sleek appearance that can complement contemporary residential and commercial buildings.

Suitable for Flat Roofs

Designed for flat roofs with pitches between 2° and 15°, the Fakro DMF-D U8 can be used across a variety of roof configurations. Its manually operated design makes it particularly useful in spaces where both natural daylight and controllable ventilation are required.

Available Sizes

The Fakro DMF-D U8 Manually Operated Flat Roof Window is available in a range of sizes to suit different rooms, roof layouts and daylighting requirements:

• 600 x 600mm
• 600 x 900mm
• 700 x 700mm
• 800 x 800mm
• 900 x 900mm
• 900 x 1200mm
• 1000 x 1000mm
• 1000 x 1500mm
• 1200 x 1200mm

The range includes both square and rectangular options, from the compact 600 x 600mm size through to the larger 1000 x 1500mm and 1200 x 1200mm options, providing flexibility for different flat roof applications.

Key Benefits

• Manually operated design for convenient ventilation control
• High-performance quadruple glazing
• Toughened external glass for increased durability
• Laminated anti-burglary internal glass rated P2A or higher
• Whole-window U-value as low as 0.64 W/m²K
• Sound insulation of up to 34dB (-1, -3)
• 150mm multi-chamber UPVC kerb upstand
• RAL9005 black profiles with a modern dark-edge glazing effect
• Suitable for flat roof pitches between 2° and 15°
• Suitable for residential and commercial applications
• Available in 9 different sizes

Frequently Asked Questions

Is the Fakro DMF-D U8 Flat Roof Window manually operated?

Yes. The Fakro DMF-D U8 Manually Operated Flat Roof Window is designed for manual opening, allowing you to control ventilation and bring fresh air into the room whenever required.

What glazing does the Fakro DMF-D U8 use?

The DMF-D U8 features quadruple glazing with toughened external glass and laminated anti-burglary internal glass rated P2A or higher. This provides excellent thermal insulation while also supporting security and durability.

What sizes are available for the Fakro DMF-D U8?

The Fakro DMF-D U8 is available in nine sizes: 600 x 600mm, 600 x 900mm, 700 x 700mm, 800 x 800mm, 900 x 900mm, 900 x 1200mm, 1000 x 1000mm, 1000 x 1500mm and 1200 x 1200mm. This selection provides options for a variety of flat roof layouts and daylighting requirements.

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.

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.