Performance Window System
Enhanced Strength. Superior Performance.
Engineered for premium renovations, self-build projects and larger window openings where increased structural performance and larger glazing units are required.
PERFORMANCE SUITE
Key Features
Where larger openings or premium specifications are required, the Performance Window System delivers increased capability while preserving the timeless appearance of traditional timber sash windows.
Enhanced 56mm Sash Sections
Specifically engineered to support heavier double-glazed units while maintaining exceptional dimensional stability.
Larger Glazing Capacity
Accommodates larger and higher-performance glazing specifications to improve thermal efficiency and acoustic performance.
Superior Thermal Performance
Designed to achieve lower U-values through improved glazing compatibility and enhanced timber construction.
Exceptional Structural Strength
Ideal for wider and taller sash windows commonly found within Victorian, Edwardian and Georgian properties.
PREMIUM Accoya® TIMBER
Manufactured using Grade 1 Accoya timber for outstanding durability, stability and resistance to movement.
FACTORY FINISHED
Available fully factory finished in an extensive range of RAL colours with durable low-maintenance coatings.
Expert guidance for every project
Access expert guidance on building regulations, thermal performance, planning requirements and sash window specification.
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Whether you're working on a new-build development, period renovation or heritage conservation project, access expert guidance designed to simplify specification and installation.
Understanding Part Q Compliance
Sash Window U-Values Explained
Window System Comparison Guide
Conservation Area Requirements
Technical Specifications for Windows
Looking For A More Traditional Appearance?
If your project doesn't require the enhanced structural capabilities of the Performance Suite, our Classic Window System offers a more traditional solution with slimmer sash sections, refined meeting rails and thinner double glazing for a more sympathetic heritage appearance.
Why Choose Performance?
A premium sash window system designed to satisfy the expectations of modern architects, self-builders and high-end residential developers. The Performance Window System complies with building regulations whilst featuring a 56mm sash section, enhanced thermal performance and increased structural stability, ideal for larger openings.