QW-SB20 Staff Bead – 20mm x 15mm Sliding Sash Window Profile

The QW-SB20 is a high-performance staff bead designed for traditional timber sliding sash windows. Manufactured from Qwood’s advanced wood polymer composite (WPC), this 20mm x 15mm profile delivers the authentic appearance of timber with the added durability, stability and consistency of a modern engineered material.

Widely used by joiners, sash window manufacturers and timber window specialists, the QW-SB20 is designed to secure the internal sash while maintaining smooth operation and a clean, traditional finish. It is part of the established Qwood sliding sash range, trusted across both heritage and contemporary joinery projects.

Unlike natural timber, Qwood staff beads are engineered for long-term performance. The QW-SB20 will not rot, warp, split or suffer from knots or grain defects, helping to reduce remedial work, improve production efficiency and ensure consistent results in fabrication and installation.

The profile is supplied in straight, stable lengths and can be easily cut, machined, pinned and painted using standard woodworking tools and finishes, making it fully compatible with existing joinery workflows.

Key Features of the QW-SB20
20mm x 15mm standard staff bead profile
Designed for timber sliding sash windows
Manufactured from durable Qwood composite material
Authentic timber appearance with improved performance
Will not rot, warp, split or twist
No knots, shakes or natural timber inconsistencies
Consistent straight lengths for accurate fabrication
Easy to machine, cut, fit and paint
Compatible with standard woodworking tools and joinery processes
Reduces waste, remedial work and maintenance requirements
Suitable for refurbishment and new-build sash window systems
Why Choose Qwood Staff Beads?

Qwood sliding sash beads are engineered to improve both manufacturing efficiency and long-term window performance. By combining the aesthetic qualities of timber with the stability of composite technology, Qwood helps eliminate common issues such as moisture movement, distortion and site-related defects.

The QW-SB20 is part of a wider system of staff and parting beads designed to work seamlessly together, supporting faster installation and improved consistency across production.

Applications

The QW-SB20 is suitable for:

Timber sliding sash windows
Heritage and conservation window restoration
Residential joinery manufacturing
Commercial timber window fabrication
New-build and refurbishment projects
Request a QW-SB20 Sample

Qwood offers free samples for joiners, manufacturers and fabricators who want to test the QW-SB20 in real-world production conditions before specification or full-scale use. Samples are available alongside the wider Qwood sliding sash range for system compatibility testing.