Aluminium Window Specification

TECHNAL explains aluminium window specification for commercial and public buildings. Secure, durable, and made from Hydro CIRCAL® recycled aluminium.

When developing an aluminium window specification, every decision influences the overall performance, longevity and appearance of a building. From thermal efficiency and weather resistance to facade integration and lifecycle value, commercial projects require a specification that balances technical performance with architectural intent.

TECHNAL's aluminium window systems are designed to support commercial, public-sector, mixed-use and multi-occupancy developments throughout the UK and Ireland. Backed by comprehensive technical documentation, BIM resources and project support, our aluminium windows specifications help architects, consultants, contractors and fabricators specify with confidence from concept through to completion.

Aluminium Window Specification for UK & Irish Commercial Projects

A professional aluminium window specification should consider the specific requirements of the building rather than adopting a one-size-fits-all approach. Key specification criteria include:

Building type and occupancy
Opening configuration and ventilation strategy
Frame depth and sightlines
Glazing thickness and glass specification
Thermal performance
Acoustic performance
Air permeability, watertightness and wind resistance
Security hardware and locking systems
Finish, colour and durability
Maintenance access
Integration with façades, doors and surrounding construction

By considering these factors together, design teams can develop aluminium windows specifications that meet both aesthetic and operational objectives while supporting compliance with project requirements.

TECHNAL Aluminium Windows Specifications and SOLEAL Product Options

TECHNAL offers aluminium window systems designed to support a wide range of commercial applications.

SOLEAL Next 65 Window

SOLEAL Next 65 is suitable for commercial, residential and mixed-use developments where design flexibility and performance are equally important. The system supports:

Open-in and open-out configurations
Excellent thermal performance
High levels of airtightness, watertightness and wind resistance
Acoustic comfort
Motorisation options
Juliet guarding
Composite assemblies
Magnetic or wireless window contact solutions

SOLEAL Next 75 Window

For projects requiring a deeper module, SOLEAL Next 75 provides a high-performance solution with a 75 mm frame depth. It combines sleek sightlines with extensive design flexibility, making it suitable for commercial, residential and mixed-use buildings where enhanced performance requirements influence the aluminium window specification.

Aluminium Windows Details, Profiles and Façade Integration

Professional aluminium windows details extend far beyond window dimensions. Technical details should address:

Frame sections
Opening configurations
Glazing interfaces
Cills
Perimeter interfaces
Drainage
Fixings
Installation tolerances
Thermal breaks

TECHNAL systems are designed to integrate seamlessly with TECHNAL façade systems, door systems, and sliding systems, helping designers create a coordinated building envelope with consistent detailing across the project.

Download our aluminium window specification PDF to access technical information and system details.

Aluminium Window Specification: Thermal, Weather and Acoustic Performance

A commercial aluminium window specification should contribute to overall building performance by considering:

U-values and glazing strategy
Thermal break technology
Airtightness
Watertightness
Wind resistance
Solar control
Acoustic performance
Occupant comfort

Project-specific calculations remain essential, as performance requirements vary depending on building location, exposure and intended use.

TECHNAL presents SOLEAL Next 65 as providing thermal insulation, excellent airtightness and watertightness, alongside high wind-load resistance and acoustic performance suitable for modern commercial buildings.

Aluminium Window Specification and UK Standards

There is no single British Standard covering every aluminium window specification. Instead, commercial projects should consider a range of regulatory and project-specific requirements, including:

UK Building Regulations
Approved Document L for thermal and energy performance
Approved Document B where fire strategy applies
Approved Document M where access and use interfaces apply
PAS 24 where enhanced security is required
Tested performance for air permeability, watertightness and wind resistance
UKCA or CE marking and Declarations of Performance where applicable

Project requirements such as building height, exposure, glazing strategy, acoustic targets and façade interfaces should also inform final aluminium windows specifications.

Aluminium Grade, Thickness and Quality Checks for Window Specification

When specifying commercial aluminium windows, grade and material thickness should never be selected generically. They depend on several project-specific factors, including:

Profile design
Window size
Opening type
Wind loads
Glazing weight
Hardware requirements
Structural calculations
TECHNAL system documentation

Quality should be assessed through independently tested performance, technical documentation, fabrication standards, installation quality and manufacturer support rather than relying solely on material thickness.

Sustainable Aluminium Window Specification for Net Zero Objectives

Sustainability is becoming an increasingly important part of every aluminium window specification.

TECHNAL supports lower-carbon construction through Hydro CIRCAL 75R, manufactured using a minimum of 75% recycled post-consumer aluminium with an embodied carbon footprint of 1.9 kg CO₂e per kg of aluminium. Combined with aluminium's 95% recyclability, long service life and excellent thermal performance, these systems help support both embodied carbon reduction and operational efficiency.

Aluminium Window Specification Across UK Commercial Sectors

Different sectors require different aluminium windows specifications.

Healthcare: daylight, ventilation, durability and occupant comfort.
Education: robust systems, safeguarding, acoustics and energy performance.
Hotels and leisure: visual quality, acoustic comfort and façade consistency.
Commercial offices: daylight, ventilation, thermal performance and façade rhythm.
Mixed-use developments: coordinated specifications across retail, residential and communal areas.
Residential and communal accommodation: durability, safety, thermal performance, acoustics and ease of maintenance.

Aluminium Windows Details, PDFs, BIM and Technical Documentation

TECHNAL supports every stage of the specification process with a comprehensive suite of technical resources, including:

Contact TECHNAL to discuss your aluminium window specification, access technical documentation and discover how our aluminium windows specifications can support your next commercial project.

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