The Spectus Casement Window – Bevelled/Chamfered is suitable for a wide range of architectural applications where traditional aesthetics, thermal performance, and secure operation are essential. Its classic styling, robust PVC-U construction, and flexible configuration options make it a versatile solution for both new-build and refurbishment projects.

New-Build Residential Developments

Ideal for detached homes, townhouses, and apartment blocks, the bevelled or ovolo sash options allow the window to complement a variety of architectural styles. Its thermal efficiency supports compliance with Part L of the Building Regulations, while its wide colour range enables tailored design schemes.

Social Housing and Local Authority Projects

In high-volume housing schemes, the Spectus Casement Window offers a cost-effective, low-maintenance solution that delivers long-term performance. Its PAS 24 and Secured by Design compliance ensures occupant safety, while its durable construction supports reliability in demanding environments.

Heritage and Traditional-Style Buildings

The sculptured (ovolo) sash option is particularly well-suited to properties requiring a more decorative or period-style appearance. It can be used in conservation areas (subject to planning approval) and is ideal for projects where a traditional aesthetic must be maintained alongside modern performance standards.

Commercial and Mixed-Use Buildings

For light commercial applications such as offices, retail units, and mixed-use developments, the Spectus Casement Window provides a professional, high-specification solution. Its compatibility with bay and bow configurations, side panels, and fanlights allows for flexible design integration.

Refurbishment and Retrofit Projects

Thanks to its flexible sizing, traditional detailing, and wide colour palette, the system is an excellent choice for upgrading existing buildings. It can replace outdated timber or metal windows while significantly improving thermal performance, security, and aesthetics.

A Bevelled/Chamfered PVC-U Casement Window for Traditional and Contemporary Living

The Spectus Casement Window with Bevelled or Chamfered styling is a high-performance PVC-U window system designed for residential, commercial, and public sector applications. Offering a choice of classic bevelled or sculptured (ovolo) profiles, this system delivers excellent thermal performance, security, and design flexibility—making it ideal for new-builds, refurbishments, and heritage-sensitive projects.

Manufactured by Epwin Window Systems, the Spectus Casement Window is engineered to meet the latest UK Building Regulations and provides a durable, low-maintenance solution for a wide range of architectural styles.

Design & Aesthetic Excellence

The Spectus Casement Window is available in both bevelled and ovolo (sculptured) sash options, allowing specifiers to tailor the appearance to suit traditional or contemporary design schemes. Its slim sightlines and wide range of finishes make it a versatile choice for any façade.

• Bevelled or ovolo sash designs for tailored aesthetics
• Slim sightlines for increased natural light
• Available in over 30 colour options including White, Anthracite Grey, Agate Grey, Chartwell Green, and Irish Oak
• Dual-colour options for internal/external contrast
• Smooth and woodgrain-effect finishes available
• Compatible with bay and bow configurations, side panels, and fanlights

This flexibility allows the system to complement a wide range of building types, from period properties to modern developments.

Thermal Performance & Energy Efficiency

The Spectus Casement Window is designed to deliver outstanding 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 0.8 W/m²K with triple glazing
• Multi-chambered PVC-U profiles for enhanced thermal performance
• Glazing options: 24 mm or 28 mm double glazing; 36 mm, 40 mm, or 44 mm triple glazing
• Optional recycled composite inserts for improved insulation
• Co-extruded gaskets and secure sealing for airtightness
• Supports compliance with Part L of the Building Regulations

These features contribute to lower heating costs and improved sustainability across all building types.

Security & Compliance

The system is designed to meet the highest standards of security and regulatory compliance. It is PAS 24 approved and suitable for Secured by Design specifications, making it ideal for residential and commercial developments where safety is a priority.

• PAS 24:2016 certified
• Secured by Design compliant
• Internally glazed for added security
• Multi-point locking systems with high-performance hardware
• Compliant with Approved Documents Q (Security), L (Thermal), and M (Access)

This ensures the system meets the demands of modern building regulations and planning requirements.

Durability & Low Maintenance

Manufactured from high-quality, lead-free PVC-U, the Spectus Casement Window is built to withstand the rigours of daily use while requiring minimal upkeep. Its surface finish resists fading, warping, and weathering, making it ideal for long-term performance in exposed locations.

• Weather-resistant and UV-stable
• Easy to clean and maintain
• Long service life with minimal maintenance
• Backed by manufacturer warranties

This makes it particularly suitable for social housing, rental properties, and other settings where durability and ease of care are essential.

Construction & Configuration

• PVC-U profile system with bevelled or ovolo sash options
• 70 mm frame depth
• Internally glazed as standard
• Compatible with side panels, fanlights, and bay/bow configurations
• Low threshold options available
• Frame-only or frame-and-side-panel configurations

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

Sustainability

The Spectus 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

Applications

The Spectus Casement Window – Bevelled/Chamfered is suitable for:

• New-build housing developments
• Refurbishment and retrofit projects
• Social housing and local authority schemes
• Apartments and communal entrances
• Light commercial and mixed-use buildings
• Heritage-sensitive projects (subject to planning approval)

Its combination of thermal efficiency, security, and traditional styling makes it a reliable choice for a wide range of residential and commercial applications.

Digital Specification Support

To support digital workflows and specification platforms, the Spectus 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 Spectus Casement Window?

• U-values as low as 0.8 W/m²K
• PAS 24 and Secured by Design compliant
• Bevelled or ovolo sash options for tailored aesthetics
• Wide range of colours and finishes
• Durable, low-maintenance PVC-U construction
• Compatible with bay/bow windows, side panels, and fanlights
• Designed for efficient fabrication and installation
• Backed by Epwin’s technical support and warranties