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Stellar Aluminium Flush Tilt & Turn Window - Tilt and Turn Window

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Epwin Window Systems Product certifications:
  • BSI Kitemark

    BSI Kitemark

    Certificate type

A flush aluminium tilt & turn window offering dual-function operation, slim sightlines, top-tier thermal performance, and secure ventilation—ideal for high-rise and modern architectural projects.

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Application

The Stellar Flush Aluminium Tilt & Turn Window is designed for use in a wide range of architectural settings where performance, aesthetics, and functionality are equally important. Its dual-function operation, true flush design, and high thermal efficiency make it an ideal solution for both new-build and refurbishment projects across residential, commercial, and public sector developments.

High-Rise and Medium-Rise Residential Buildings

This aluminium tilt & turn window is particularly well-suited to apartment blocks and mixed-use developments where ease of maintenance, secure ventilation, and modern styling are essential. The inward-opening turn function allows for safe and convenient cleaning of external glass from inside the building—an important feature for high-rise applications. The tilt function provides secure, controlled ventilation, making it ideal for urban living environments.

Contemporary Housing and Urban Regeneration

In low- to mid-rise residential schemes, the Stellar Flush Aluminium Tilt & Turn Window offers a clean, minimalist aesthetic that complements modern architectural styles. Its slim sightlines and flush finish enhance the visual appeal of façades, while its thermal performance supports compliance with energy efficiency targets. The system is also suitable for use in regeneration projects where modern performance must be balanced with design sensitivity.

Commercial and Mixed-Use Developments

For commercial buildings such as offices, hotels, and retail units, this aluminium tilt & turn window provides a professional, high-specification solution. Its robust aluminium construction ensures long-term durability, while its flush design and wide colour range allow for seamless integration into contemporary façades. The system’s security credentials, including PAS 24 and Secured by Design compliance, make it suitable for high-traffic environments.

Education and Public Sector Buildings

The Stellar Flush Aluminium Tilt & Turn Window is also ideal for schools, universities, healthcare facilities, and other public buildings. Its dual-function operation supports safe ventilation and ease of cleaning, while its thermal and acoustic insulation properties contribute to comfortable, energy-efficient internal environments. Optional restrictors and intelligent gearing enhance safety in settings where user control must be limited.

Refurbishment and Retrofit Projects

Thanks to its clean lines, flush finish, and flexible sizing, this aluminium tilt & turn window is an excellent choice for refurbishment schemes. It can be used to replace outdated systems while improving thermal performance, security, and aesthetics. The system’s ability to achieve U-values as low as 1.0 W/m²K makes it ideal for upgrading existing buildings to meet modern energy standards.

Description

A Versatile Aluminium Tilt & Turn Window for Modern Architecture

The Stellar Flush Aluminium Tilt & Turn Window is a premium window system designed for high-rise residential, commercial, and mixed-use buildings. Combining sleek flush aesthetics with dual-function operation, this aluminium tilt & turn window offers exceptional thermal performance, security, and design flexibility.

Engineered for specifiers seeking a contemporary solution that meets both aesthetic and regulatory demands, the Stellar system delivers outstanding performance across ventilation, access, and energy efficiency.

Design & Aesthetic Excellence

This aluminium tilt & turn window features a true flush finish on the exterior, with a refined stepped profile internally. The result is a clean, modern appearance that complements contemporary architectural styles. Concealed gearing and slim sightlines enhance the minimalist look while maximising natural light.

  • Flush exterior profile for seamless integration
  • Slim sightlines for up to 12% more glass area
  • Concealed hardware for a clean internal finish
  • Available in large sizes for expansive openings
  • Wide range of colours and finishes, including dual-colour options

Dual-Function Operation

The Stellar Flush Aluminium Tilt & Turn Window offers two modes of operation:

  • Tilt mode: Provides secure top ventilation, ideal for controlled airflow in residential and commercial settings.
  • Turn mode: Allows full inward opening for maximum ventilation and easy cleaning of external glass—particularly beneficial in high-rise applications.

This dual-functionality makes the system ideal for buildings where both safety and accessibility are key considerations.

Thermal Performance & Energy Efficiency

Designed to meet and exceed UK Building Regulations, including Approved Document L, the Stellar aluminium tilt & turn window delivers excellent thermal insulation without the need for foam inserts or complex enhancements.

  • U-values as low as 1.0 W/m²K with triple glazing
  • U-values of 1.4 W/m²K with double glazing
  • Triple air seals and under-glass seals for enhanced weather protection
  • Polyamide thermal breaks (40mm and 45mm) for improved energy performance

These features contribute to reduced energy consumption and improved occupant comfort, supporting sustainability goals in modern construction.

Security & Compliance

The Stellar Flush Aluminium Tilt & Turn Window is designed with robust security features and meets key regulatory standards:

  • PAS 24:2016 compliant
  • Secured by Design accredited
  • Approved Document Q compliant
  • Intelligent gearing prevents accidental switching between tilt and turn modes
  • Optional restrictors for added safety in residential and public sector buildings

Weather Resistance

Tested to rigorous standards, the system offers excellent protection against the elements:

  • Air permeability: Class 4 (600 Pa)
  • Watertightness: Class 9A (300 Pa)
  • Wind resistance: Class C5 (1600 Pa)

Fabrication & Installation Benefits

Designed with fabricators and installers in mind, the Stellar aluminium tilt & turn window includes several innovations that simplify manufacturing and reduce time on site:

  • Reverse butt joint allows internal glazing without dummy sashes
  • Knock-in beads and flat rebates for easy installation
  • Post-installation beading minimises site damage
  • Compatible with Stellar’s full suite of trims, cills, and accessories

Applications

This aluminium tilt & turn window is suitable for a wide range of applications, including:

  • Medium and high-rise residential buildings
  • Urban apartments and mixed-use developments
  • Commercial offices and public sector buildings
  • Refurbishment and retrofit projects
  • Projects requiring secure ventilation and easy-clean access

Its combination of aesthetics, performance, and functionality makes it a versatile choice for architects and specifiers working across sectors.

Digital Specification Support

To support BIM workflows and digital specification, the Stellar Flush Aluminium Tilt & Turn Window is available as a BIM object in multiple formats:

  • RevitIFC, and DWG
  • COBie-compliant data
  • Full metadata for scheduling, performance analysis, and integration into digital models

Why Specify Stellar Aluminium Tilt & Turn Windows?

  • True flush aesthetics with slim sightlines
  • Dual-function operation for ventilation and access
  • Outstanding thermal and weather performance
  • Secure, compliant, and future-ready
  • Designed for efficient fabrication and installation
  • Backed by Epwin’s industry-leading support and warranties

General information

Color

Black

Brown

Cream

Grey

White

Material

Aluminium

Shape

Square

Rectangle

Length

Bespoke

Guidance for specification option:

Available in larger sizes to create modern, light-filled living spaces:

  • 1342 x 2442 mm.
  • 1642 x 2042 mm.
  • Fixed light: 5 m.

Width

Bespoke

Height

Bespoke

Warranty description

Ten year

Guidance for specification option:

Mechanical performance guarantee.

25 year

Guidance for specification option:

Surface finish guarantee.

Uniclass

Pr_30_59_98_02 Aluminium window unitsPrimary

CAWS

L10/25 Aluminium windows

L10/330 Aluminium windows

Product range

Stellar

Specification data - Aluminium window units

Classification data

Description

Flush tilt and turn window.

Manufacturer

Epwin Window Systems.

Dimensions and configurations

-

Manufacturer guidance

Insert size requirements.

Product performance

-

Weather performance

-

Air permeability

600 Pa.

Watertightness

300 Pa.

Resistance to wind load

1600 Pa.

Safety

-

Security level

To Secured by Design standard/ To PAS 24.

Thermal

-

Whole window U-value

1.0 W/m²K (triple glazing); 1.4 W/m²K (double glazing).

Guidance for specification option:

Best performance figures, tested and approved by UKAS.

Consult manufacturer to provide calculations on accurate weather performance based on your specific requirements.

Frame

-

Profile

26 mm.
36 mm.
44 mm.

Finish as delivered

-

Colour

Anthracite Grey Flat/ Matt RAL 7016.

Guidance for specification option:

Stock colour.

Anthracite Grey/ Signal White Flat/ Matt RAL 7016 / 9003.

Guidance for specification option:

Stock colour.

Jet Black Flat/ Matt RAL 9005.

Guidance for specification option:

Stock colour.

Jet Black/ Signal White Flat/ Matt RAL 9005 / 9003.

Guidance for specification option:

Stock colour.

Signal White Flat/ Matt RAL 9003.

Guidance for specification option:

Stock colour.

Agate Grey Flat/Matt RAL 7038.

Guidance for specification option:

Available upon request.

Anthracite Grey Textured RAL 7016.

Guidance for specification option:

Available upon request.

Chocolate Brown Flat/Matt RAL 8017.

Guidance for specification option:

Available upon request.

CreamFlat/MattRAL 9001.

Guidance for specification option:

Available upon request.

Slate Grey Flat/Matt RAL 7015.

Guidance for specification option:

Available upon request.

Glazing or infill

-

Requirements

Double glazed.
Triple glazed.

Hardware

-

Manufacturer guidance

The range includes styles and finishes to suit all projects. Consult manufacturer for details and insert requirements. 

Operation

-

Type

Manual.

Cill profile

100 mm.
150 mm.
200 mm.

Accessories

Astragal bars.

Sustainability data

Country of product manufacture

United Kingdom

Manufacturing plant location

Material

Aluminium

Recyclability

100

Expected Life

60 year

Product certifications

BSI Kitemark

BSI Kitemark

BS4873 Aluminium Window System Supplier no.KM711705

Literature

Stellar Window & Door features

Stellar Window & Door features

STE18774 Stellar FTT datasheet

STE18774 Stellar FTT datasheet

Stellar Window and Door range

Stellar Window and Door range

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