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Window Comparison Guide

Compare all UK Sash Company window systems side-by-side to understand compliance requirements, thermal performance, heritage suitability and specification options.

At a Glance

Part Q Sash Window

New-build developments and projects requiring Approved Document Q compliance.

Performance Sash Window

Large-scale renovations, self-build projects and period property upgrades requiring enhanced thermal performance.

Classic Sash Window

Most replacement, renovation and conservation-friendly projects.

Heritage Reproduction Sash Window

Sensitive conservation projects requiring traditional aesthetics.

Heritage Original Sash Window

Listed buildings and authentic heritage restoration.

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Detailed Comparison

Compare specifications, compliance requirements, glazing options and performance characteristics.

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Need Help Choosing The Right Window System?

Every project is different. Upload your drawings, elevations or window schedules and our technical team will review your project requirements and recommend the most suitable sash window system.

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What you can upload?

Architectural Drawings

Window Schedules

PDF Plans

Site Photos

Specifications

Frequently asked questions

Ready to Start Your Project?

Whether you're planning a new-build development, renovating a period property or restoring a listed building, our team can help you identify the most suitable sash window system for your project.

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