UPVC roof window DXW

fixedtriple-glazedblack

Overview
A specialised flat-roof, walk-on window for terraces, green roofs and pedestrian roof areas. Flush-mounted to the roof covering, the DXW combines a reinforced load-bearing frame with an anti-slip laminated outer pane, delivering high thermal performance and watertightness for fixed (non-opening) installations.

Key benefits

• Reinforced structure certified for walking on the window surface
• External laminated glass with special anti-slip coating for traction
• High thermal insulation (Ug = 0.5 W/m²K for glazing; Uw = 0.7 W/m²K for 60×60 size)
• Suitable for roof pitches from 0° to 15°
• Fixed, non-opening design (passive glazing unit)
• Compatible with raised bases for green roofs or non-standard substrates
• Hail-resistant laminated outer pane (warranty terms apply)

Glazing and thermal performance
The DXW features a double-chamber passive glazing unit (triple-pane) with total glazing thickness of approximately 66 mm, achieving Ug = 0.5 W/m²K. Internal multi-chamber uPVC profiles are filled with insulating material to minimise heat loss and support the overall window thermal performance.

Comfort, safety and durability

• Anti-slip outer glass surface (special coating) enabling safe foot traffic and terrace use
• Laminated outer pane keeps fragments bonded to the safety film in case of breakage
• Reinforced load-bearing frame and glazing designed for walk-on applications
• Raised bases available to adapt to green roofs or specific installation heights

Use cases
Engineered for flat roofs and low-pitch installations (0°–15°). Typical applications: terraces, technical roofs, pedestrian walkways, green roofs and any flat-roof construction requiring integrated walkable glazing.

Dimensions & selected size
Commercial size: 60×60 cm
External frame (W × H): 820 mm × 820 mm
Window frame clear opening (W × H): 517 mm × 517 mm
Window sash clear opening (W × H): 476 mm × 476 mm
Window reveal clear opening (W × H): 558 mm × 558 mm

Installation
Recommended roof pitch: 0°–15°. Fits original installation accessories and available raised bases for elevated installations.

Technical specifications

• Model / Series: DXW
• Product type: Flat roof walkable window, fixed (non-opening)
• Commercial size (W × H): 60 × 60 cm
• External frame dimensions: 820 mm × 820 mm
• Window frame clear opening (W × H): 517 mm × 517 mm
• Window sash clear opening (W × H): 476 mm × 476 mm
• Window reveal clear opening (W × H): 558 mm × 558 mm
• Glazing unit: double-chamber passive glazing, triple-pane, total thickness ≈ 66 mm
• Glazing thermal transmittance (Ug): 0.5 W/m²K
• Window thermal transmittance (Uw) for selected size: 0.7 W/m²K
• Number of seals: 1
• Airtightness (air permeability): Class 4
• Wind load resistance: Class C5 / B5
• Impact resistance: Class 5 – 950 mm
• Watertightness: E1200
• Walk-on window (Walk On): Yes
• Window colour (interior): PVC white
• External cladding colour: Black (RAL 9005)
• Window material: multi-chamber uPVC profile
• Control system: Non-opening (no electric control)
• Solar power supply: No
• Installed electric control: No
• Product weight (approx.): 74 kg
• Package dimensions (W × L × H): 0.92 m × 0.91 m × 0.28 m
• Suitable roof pitch range: 0° – 15°