QW-LB1 Lambs Tongue Glazing Bar – Composite Astragal Bar for Timber Windows

The QW-LB1 Lambs Tongue Glazing Bar is part of the Qwood range of high-performance composite glazing profiles from Quantum Profile Systems. Designed for timber windows and doors, it combines the traditional appearance of a lambs tongue astragal bar with the durability, consistency, and long-term performance benefits of wood polymer composite (WPC) technology.

Manufactured specifically for the timber joinery industry, the QW-LB1 profile provides an effective alternative to traditional timber glazing bars while maintaining authentic period detailing for heritage and conservation-style window systems.

Traditional Lambs Tongue Detailing with Modern Composite Performance

The QW-LB1 features a classic lambs tongue moulding profile widely used in traditional timber window manufacture. Its refined detailing makes it ideal for Georgian, heritage, and conservation-style glazing designs where authentic aesthetics are essential.

Unlike traditional timber glazing bars, Qwood composite profiles are designed to remain consistently straight and dimensionally stable. This helps reduce waste, improve machining accuracy, and minimise expansion, contraction, and twisting over time.

Note: Cutters to match available from Whitehill Tools https://www.whitehill-tools.com/profile-cutters/scribing-profiles/140792C/

Key Features & Benefits

• 22mm x 12.5mm lambs tongue glazing bar profile
• Manufactured from durable wood polymer composite (WPC)
• Resistant to warping, twisting, and rot
• Smooth, paintable surface finish
• Excellent dimensional stability and machining consistency
• Suitable for internal and external applications
• Compatible with modern double-glazed timber windows
• Reduced labour, preparation, and material waste
• Easy to cut, machine, fit, and finish using standard woodworking methods

Applications

The QW-LB1 Lambs Tongue Glazing Bar is suitable for a wide range of timber joinery applications, including:

• Timber casement windows
• Georgian-style glazing layouts
• Heritage and conservation projects

The profile is particularly suitable for projects where traditional window styling must be retained alongside modern glazing performance.

Why Choose Qwood?

Qwood glazing bars and beads are developed specifically for the timber window and door industry. The range combines the appearance and workability of timber with the performance benefits of engineered composite materials.

Benefits of Qwood include:

• Continually straight profile performance
• No knots or natural timber defects
• Reduced sanding and preparation time
• Improved manufacturing efficiency
• Consistent machining quality
• Reduced waste during fabrication
• Minimal expansion and contraction
• Long-term durability and weather resistance

Qwood profiles are compatible with standard joinery tooling and can be fixed using glazing tapes, pins, brads, or glazing bar systems depending on the application.

Technical Information

• Product code: QW-LB1
• Profile type: Lambs tongue glazing bar / astragal bar
• Dimensions: 22mm x 12.5mm
• Material: Wood polymer composite (WPC)
• Finish: Smooth paintable surface
• Application: Timber windows and doors
• Manufacturer: Quantum Profile Systems

Technical drawings, fitting guides, and product datasheets are available from the Qwood website.

Samples & Technical Support

Free samples of the QW-LB1 Lambs Tongue Glazing Bar are available for joiners, timber window manufacturers, and specifiers. Qwood also provides technical guidance and fitting support for both new-build and refurbishment projects.

About Qwood

Qwood is a specialist range of composite glazing bars, beads, and window profiles developed by Quantum Profile Systems for the timber joinery industry. The system is designed to replicate traditional timber detailing while improving durability, stability, and manufacturing efficiency across modern window and door production.