Sealed Units vs. Single Pane Glass: A Practical Comparison

Date: 4 December 2024
Source: Sparklike Oy
Sealed Units vs. Single Pane Glass: A Practical Comparison
Photo source
Sparklike Oy

Date: 4 December 2024

When comparing sealed units (insulating glass units, IGUs) with single-pane glass, several key performance metrics highlight the advantages of sealed units.

1. Thermal Performance: Insulation and Energy Efficiency

Single Pane Glass: Typically has an R-value of around 1 (RSI below 0.2), indicating poor insulation properties.

Sealed Units: Double-glazed units can achieve R-values between 3 and 4, significantly reducing heat transfer. Triple-glazed units can reach R-values up to 5 or higher, offering superior insulation.

2. Noise Reduction

Single Pane Glass: Provides minimal sound insulation, allowing most external noise to pass through.

Sealed Units: Double-glazed units can reduce noise levels by approximately 20-30 decibels, depending on glass thickness and the gap between panes. Triple-glazed units offer even greater noise reduction.

3. Condensation Resistance

Single Pane Glass: Prone to condensation on interior surfaces, especially in colder climates, leading to potential mold growth and damage.

Sealed Units: The insulating layer between panes keeps interior glass surfaces warmer, reducing the likelihood of condensation. Additionally, the use of desiccants in spacers helps absorb any moisture that may enter the unit.

4. Energy Savings and Environmental Impact

Single Pane Glass: Due to poor insulation, single-pane windows can lead to higher energy consumption for heating and cooling, increasing utility costs and carbon footprint.

Sealed Units: By improving insulation, sealed units can reduce energy consumption for heating and cooling by up to 20-30%, leading to significant cost savings and a lower environmental impact.

5. Cost and Long-Term Value

Single Pane Glass: Lower initial cost but higher long-term expenses due to increased energy bills and potential for condensation-related damage.

Sealed Units: Higher upfront cost but offer long-term savings through reduced energy bills and increased property value. The lifespan of sealed units can exceed 20 years with proper maintenance.

These metrics underscore the superior performance of sealed units over single-pane glass in terms of energy efficiency, noise reduction, condensation resistance, and long-term value.

Contact Sparklike for more information and support on measuring argon concentration in IGUs.

Contact Sparklike for More Information

Sources used in this text:

https://en.wikipedia.org/wiki/Insulated_glazing

https://www.guardianglass.com/us/en/why-glass/build-with-glass/glass-functions/thermal-insulation

https://www.pilkington.com/en/global/products/product-categories/noise-control

https://centennialglass.com/window-repair/window-repair-faq/what-are-window-sealed-units/

https://glassforum.org/understanding-insulated-glass-units-igus/

https://hansenglassinc.com/insulated-glass/

600450 Sealed Units vs. Single Pane Glass: A Practical Comparison glassonweb.com

Others also read

For newcomers and those looking to refresh their knowledge, LiSEC has compiled the most frequently asked questions from its TPA training course.
Learn how to get the most accurate results with Sparklike Laser devices for non-invasive IGU gas concentration measurement.
From June 12 to 14, the CMS facility in Zogno (BG) hosted the CMS Open House – three days dedicated to innovation in glass processing, featuring live demonstrations, technical insights, and valuable meetings with customers and partners.
The new TPS® PRO technology represents the most efficient and flexible solution for insulating glass manufacturing.
On 30 June, the European Commission adopted a support package to help Member States implement the new Energy Performance of Buildings Directive (EPBD).
Glaston ScreenMax glass bending furnace was installed at Finn Lamex in Finland in 2024.

Add new comment

From industry

Polígono Industrial El Bayo, parcela I, 19
24492 Cubillos del Sil León
Spain