Crystal Double Glazed Window - Agate/White

A U-value measures how well a window prevents heat transfer. A lower U-value indicates better insulation. A U-value of 1.4 W/m2K signifies good thermal performance, helping to keep your home warmer in winter and cooler in summer, thus reducing energy costs.

The handing is determined by viewing the window from the *outside*. If the hinges are on the left and the handle is on the right, it's a right-hand opening. If the hinges are on the right and the handle is on the left, it's a left-hand opening.

Trickle vents provide a small, continuous flow of fresh air into the room, even when the window is closed. This helps to improve indoor air quality, reduce condensation build-up, and prevent 'stuffiness' without compromising security.

While technically possible, replacing a sealed double glazing unit is often best handled by a professional. If condensation appears between the panes, it signifies a seal failure, and professional assessment is recommended.

It is recommended to clean the window every 3-6 months to maintain its appearance and functionality. Pay attention to cleaning the glass, frames, and especially the trickle vents and drainage points.

This window is designed for standard residential applications and offers good thermal and security performance. For specific environmental conditions or unique building requirements, consulting with a fenestration professional is advised.

Check for obstructions around the frame or sashes. Ensure the espag locking mechanism is fully disengaged. If the issue persists, the frame may have shifted; consult a professional installer.

Minor condensation on the *outside* of the glass is normal, especially in humid conditions. Significant condensation *between* the panes indicates a seal failure, and the unit may need replacement. Check internal humidity levels and ensure trickle vents are not blocked.

Ensure the handle is in the correct position and that no part of the frame or sash is obstructing the lock. Clean and lubricate the locking points with a silicone-based spray.

Inspect the seals around the frame and sash for damage or wear. Ensure the window is correctly installed and sealed against the building fabric. Check that the espag locks are fully engaging.