Double Glazing

Double glazing represents a fundamental advancement in window technology, utilizing two glass panes separated by a sealed air or gas-filled cavity to create a high-performance thermal and acoustic barrier. This intelligent construction dramatically improves insulation properties while maintaining excellent optical clarity and light transmission, making it the standard for energy-efficient buildings worldwide.

All Glass specializes in manufacturing premium double glazed units customized to meet specific performance requirements for diverse applications. Our state-of-the-art production facility enables precise control over every aspect of fabrication, from glass selection and spacer systems to gas filling and edge sealing. Each unit undergoes comprehensive quality testing to ensure optimal performance and long-term durability in real-world conditions.

Why Choose Our Double Glazing

Our double glazing solutions deliver exceptional value by addressing multiple performance challenges simultaneously. Beyond the immediate comfort improvements and noise reduction benefits, these units significantly reduce energy consumption, leading to lower utility costs and reduced environmental impact. With various glass types, coatings, and spacer options available, we can tailor your glazing solution to achieve the perfect balance of thermal efficiency, sound control, and solar management for your specific project requirements.

Energy Conservation

Double glazed units typically reduce heat loss through windows by 50-70% compared to single glazing, dramatically improving building energy efficiency and reducing heating and cooling costs.

Comfort Enhancement

By maintaining more consistent interior glass surface temperatures, double glazing eliminates cold drafts and "cold zones" near windows, improving overall comfort throughout the space.

Acoustic Insulation

The dual-pane construction with optimized air space significantly attenuates sound transmission, creating quieter interior environments protected from traffic noise and other external disturbances.

Condensation Control

Improved thermal performance of the interior glass surface significantly reduces or eliminates condensation formation, protecting window frames and surrounding materials from moisture damage.

Production Machinery for Double Glazing

Our Double Glazing units are manufactured using advanced machinery that ensures exceptional quality and performance. The core of our production process features our specialized IGU assembly lines—Forel and Bystronic—which create precisely constructed insulated glass units with perfect alignment and hermetic sealing essential for long-term thermal and acoustic performance. The process begins with our precision cutting lines—Bottero 363 evo, Intermac LM 37, and Intermac combyline—which dimension glass sheets with exacting accuracy to ensure perfect fit within the completed units. These sophisticated machines work together to produce double glazing with precise spacer application, controlled gas filling, and superior edge sealing that ensures decades of reliable performance. Our integrated quality control systems verify every aspect of production, delivering double glazed units that consistently exceed industry standards for energy efficiency, sound reduction, and durability.

Planning & Strategy

Our approach to double glazing projects begins with a thorough assessment of performance requirements and site conditions. We consider factors such as building orientation, exposure, climate zone, and specific comfort objectives to recommend the optimal glass combination, cavity width, and gas fill. This consultative process ensures that your glazing solution delivers maximum performance value while respecting aesthetic and budget considerations.

Our work benefits

Investing in quality double glazing from All Glass delivers substantial benefits throughout your building’s lifecycle. The immediate improvement in thermal and acoustic performance creates more comfortable and usable interior spaces. Energy savings typically provide a return on investment within 3-7 years, while continuing to deliver value for decades thereafter. The reduction in condensation risk protects surrounding building materials from moisture damage, extending the service life of the entire window system and reducing maintenance requirements. Additionally, upgraded glazing often increases property value and marketability by improving energy ratings and comfort levels.

Frequently asked questions

Understanding the options and benefits of double glazing helps clients make informed decisions. Here are answers to common questions about our double glazed units.

What is the difference between standard double glazing and thermal double glazing?

Standard double glazing refers to any two-pane insulated glass unit with a sealed air space, which provides basic thermal and acoustic improvements over single glazing. Thermal double glazing specifically incorporates low-emissivity (Low-E) coatings and often uses argon or krypton gas fills to achieve significantly higher insulation values. While standard double glazing might achieve a U-value of 2.8-3.0 W/m²K, thermal double glazing can reach values as low as 1.0-1.4 W/m²K—a dramatic improvement in insulation performance. At All Glass, we typically recommend thermal double glazing for most applications due to its superior energy efficiency and comfort benefits.

How does the gas fill between panes improve performance?

The standard air space between glass panes in double glazing can be filled with inert gases—typically argon or krypton—that have lower thermal conductivity than air. Argon, the most commonly used gas, reduces heat transfer across the cavity by approximately 30% compared to air. Krypton provides even greater insulation but at a higher cost, making it most appropriate for premium applications or narrow cavity designs. These gas fills are colorless, odorless, non-toxic, and non-reactive, providing performance benefits without any visual or safety implications. Our production process includes precision gas filling and testing to ensure optimal concentration levels for maximum performance.

Can existing windows be upgraded to double glazing?

In many cases, yes. We offer several approaches to upgrading existing windows to double glazing. For windows with sufficient frame depth and structural integrity, we can often replace single glazing with slim-profile double glazed units designed specifically for retrofit applications. For historic windows or those that cannot accommodate full double glazing, we offer secondary glazing systems that provide many of the same benefits while preserving the original window. Our assessment process evaluates your existing windows to determine the most appropriate and cost-effective upgrade path, considering factors such as frame condition, thermal breaks, and operational mechanisms.