Spring Balance Window

Lignum timber spring balance sliding sash windows are the modern alternative to the traditional box sash, making them suitable for new as well as traditional properties.

The Lignum Spring Sliding Sash Window uses a spring-loaded mechanism instead of weighted cords and pulleys, so it is suitable for a smaller or flush reveal detail.

The window provides excellent energy efficiency and security performance. The spring balance sash offers a more economical solution, making it a suitable choice for both refurbishment and new build projects.

The system is part of a registered Secured by Design scheme.

Features and benefits:

• PAS 24:2022 security.
• 1.3 W/m²K U-value double glazed.
• Document L, Document M and Document Q compliant.
• Tested to BS 6375-1.
• Double, triple or vacuum glazing.