Fixing and buying guide
VELUX Centre-Pivot Roof Windows White Painted 134x98cm GGL UK04 2070Q
Security and glazing specification
This window is engineered with integrated frame locks, extra strong hinges, laminated internal glazing, and toughened external glazing to resist breakage and unauthorised entry. The dual-layer glazing also reduces heat loss and improves thermal comfort. These features make it particularly suitable for ground-floor loft spaces, vulnerable elevations, or properties in high-risk areas where enhanced security is a priority.
- Integrated frame locks and reinforced hinges for burglary resistance
- Laminated internal glazing and toughened external glazing
- 2-layer glazing reduces heat loss and improves insulation
- Top-operated centre-pivot design for secure ventilation without full opening
Operation and maintenance
The top control bar allows you to open the window to a ventilation position, providing fresh air circulation while keeping the window effectively closed and secure. The centre-pivot mechanism enables full 180° rotation, allowing you to safely clean the external glass from inside without accessing the roof. The window opens and closes smoothly even with furniture positioned underneath, making it practical for furnished rooms. A removable and cleanable ventilation filter protects your home from dust and insects during use.
- Top-operated control bar with ventilation position for secure fresh air
- 180° rotation capability for safe internal cleaning of outer glass
- Operates smoothly with furniture underneath
- Removable ventilation filter for dust and insect protection
Installation and compatibility
The GGL UK04 2070Q is a standard UK size window designed to fit rafter spacings of 1340mm (width) and 980mm (height). Confirm your roof structure matches these dimensions before purchase. The window requires a compatible flashing kit appropriate to your roof covering type (slate, tile, lead, or other materials). Pre-fitted brackets are included for blind attachment, allowing you to quickly add optional VELUX blinds without additional fixings. Ensure you have the correct flashing kit and any necessary roof membrane or weatherproofing materials before installation begins.
- UK04 size: 1340mm width x 980mm height – check your rafter spacing
- Requires compatible flashing kit for your specific roof covering
- Pre-fitted brackets for VELUX blind attachment
- Confirm roof pitch and structural compatibility before ordering
What is included and pre-installation checks
The window is supplied as a complete unit with integrated frame locks, hinges, glazing, and ventilation filter. Pre-fitted blind brackets are included. You will need to purchase a separate flashing kit matched to your roof type and any additional weatherproofing materials required by your roof specification. Before installation, verify roof pitch, rafter spacing, and that the opening is clear of obstructions. Ensure you have adequate access and appropriate safety equipment for working at height.
- Complete window unit with locks, hinges, and dual glazing
- Removable ventilation filter included
- Pre-fitted blind brackets included
- Flashing kit sold separately – specify your roof covering type
- Check roof pitch and rafter dimensions match UK04 specification