Flush Casement Window

A Flush Casement Window System for Traditional Aesthetics and Modern Performance

The Profile 22 Flush Casement Window is a high-performance PVC-U window system designed to replicate the appearance of traditional timber windows while delivering the thermal efficiency, security, and low maintenance benefits of modern materials. Built on the Profile22 profile platform, this system is ideal for heritage-sensitive developments, conservation areas, and design-led residential projects.

With a sash that sits flush within the outer frame, the system offers clean, understated lines that suit both period-style and contemporary homes. It is engineered to meet the latest UK Building Regulations and is available in a wide range of configurations, finishes, and glazing options.

Design & Aesthetic Excellence

The flush sash design delivers a sleek, timber-like appearance that enhances the visual appeal of any elevation. It is particularly well-suited to traditional homes, rural properties, and conservation areas where planning requirements demand sympathetic detailing.

• True flush finish externally for a clean, heritage look
• Available in Chamfered or Sculptured outer frame styles
• Compatible with bay and bow window assemblies
• Wide range of colour options including White, Anthracite Grey, Agate Grey, Chartwell Green, and Irish Oak
• Dual-colour options for internal/external contrast
• Grained and smooth surface finishes available
• Astragal bar options for traditional detailing

This flexibility allows the system to meet both aesthetic and planning requirements across a wide range of project types.

Thermal Performance & Energy Efficiency

The Profile 22 Flush Casement Window is designed to deliver excellent thermal insulation, helping to reduce energy consumption and improve occupant comfort. Its multi-chambered profile and advanced glazing options support compliance with Approved Document L.

• U-values as low as 1.2 W/m²K with double glazing
• 6-chambered outer frame and 5-chambered sash
• Glazing options: 24 mm
• Optional recycled composite thermal inserts for enhanced performance
• Compatible with energy-efficient sealed units
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These features make the system suitable for both new-build and retrofit projects aiming to meet or exceed energy efficiency targets.

Security & Compliance

The system is designed to meet the highest standards of safety and security. It is PAS 24 certified and suitable for Secured by Design specifications, making it ideal for residential and mixed-use developments.

• PAS 24:2022 certified
• Secured by Design accredited
• Internally glazed for added security
• Multi-point locking with shootbolts or espagnolettes
• Night vent facility and locking/non-locking handle options
• Compliant with BS 7412, BS 6375-1, BS EN 12608
• BSI Kitemark certified
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• This ensures the system meets the requirements of Approved Document Q and provides peace of mind for homeowners and developers alike.
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• Durability & Low Maintenance
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Manufactured from high-quality PVC-U, the Profile 22 Flush Casement Window is built for long-term performance with minimal upkeep. Its surface finish resists fading, warping, and weathering, making it ideal for exposed locations and high-traffic environments.

• Weather-resistant and UV-stable
• Easy to clean and maintain
• Long service life with minimal maintenance
• Backed by manufacturer warranties
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This makes it particularly suitable for social housing, rental properties, and heritage refurbishments.

• Construction & Configuration
• Flush sash design with Chamfered or Sculptured outer frame
• 70 mm frame depth
• Top-hung, side-hung, and fixed light configurations
• Compatible with bay and bow assemblies
• Internally glazed as standard
• Optional astragal bars and decorative features

This modular approach allows the system to be tailored to suit a wide range of architectural and performance requirements.

Sustainability

The Profile 22 Flush Casement Window is manufactured using responsibly sourced materials and offers options with recycled content. It is designed for long-term performance and recyclability at end of life.

• Recycled composite thermal inserts available
• Fully recyclable PVC-U profiles
• Manufactured in the UK to ISO 14001 environmental standards
• Supports sustainable construction and BREEAM targets
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Digital Specification Support

To support digital workflows and specification platforms, the Profile 22 Flush Casement Window is available with:

• NBS Chorus-compatible specification data
• BIM object availability (Revit, IFC, DWG)
• COBie-compliant data
• Full technical documentation including datasheets, test reports, and installation guides

Why Specify the Profile 22 Flush Casement Window?

• True flush sash design for traditional aesthetics
• U-values as low as 1.2 W/m²K
• PAS 24 and Secured by Design compliant
• Wide range of colours, finishes, and glazing options
• Durable, low-maintenance PVC-U construction
• Suitable for conservation areas and heritage projects
• Designed for efficient fabrication and installation
• Backed by Epwin’s technical support and warranties