POLMEK Group

INSULATED GLASS

Insulated Glass Unit (IGU) is a multi-layer glass system composed of two or more glass panes fixed at a specific distance by a spacer, with the cavity between the panes filled with dry air or inert gas (typically argon or krypton) to ensure airtight sealing.

This system is widely preferred in modern buildings for façade applications to enhance thermal insulation, acoustic comfort, and energy efficiency. IGUs provide comfortable and environmentally friendly indoor conditions while meeting the performance criteria required by sustainable architecture.

INSULATED GLASS TECHNICAL FEATURES

Main Components

Component	Description
Glass panes	Usually Float Glass, Tempered Glass, Heat-Strengthened Glass, or Laminated Glass. Can include coatings such as Low-E, Solar Control, or Reflective.
Spacer bar	An aluminum, stainless steel, or thermoplastic profile that separates the glass panes. Often includes a desiccant to absorb moisture.
Desiccant	Moisture-absorbing material inside the spacer to prevent condensation inside the cavity.
Sealant system	Dual-seal systems are common: primary seal (e.g., polyisobutylene - PIB) for gas retention, and secondary seal (e.g., silicone or polysulfide) for structural integrity.
Cavity (interspace)	Filled with dry air or inert gas (e.g., Argon gas, Krypton, Xenon) to improve thermal performance and reduce U-value.

Performance Parameters

Parameter	Description
U-value (W/m²·K)	Thermal transmittance. Lower values indicate better insulation.
SHGC / g-value	Solar Heat Gain Coefficient: the fraction of solar energy transmitted.
LT (%)	Light Transmittance: how much visible light passes through.
Rw (dB)	Weighted Sound Reduction Index (for acoustic insulation).
UV Transmittance	Indicates how much ultraviolet radiation passes through.
Gas Fill Rate (%)	The proportion of cavity volume filled with inert gas (ideally 90%+)

Common IGU Configurations

Configuration	Description
Double Glazing	Two glass panes with a single air/gas-filled cavity.
Triple Glazing	Three panes with two cavities. Enhanced thermal/acoustic.
Low-E Coated IGU	One or more surfaces have Low-Emissivity coating to reduce radiative heat loss.
Warm Edge Spacer IGU	Spacer with low thermal conductivity (e.g., TPS, Foam Spacer)

TYPES OF INSULATED GLASS

→ INSULATED GLASS WS SERIE

The WS Series is the most preferred product group in our insulated glass solutions portfolio, offering superior performance standards and user-centric functional advantages. The key technical specifications of this series are detailed below.

• Provides superior thermal and noise control.

• Manufactured using modern technologies.

• Holds significant importance in terms of safety and security.

• Controls sunlight with colored glass models.

• Reflective models similarly prevent excessive solar heat from entering the environment, making them suitable for both indoor and outdoor use.

→ INSULATED GLASS EXCELLENT SERIE

Our EXCELLENT insulated glass series is manufactured using the latest production technologies and in compliance with international standards. Featuring Low-E glass technology, it provides significant energy savings. The key technical specifications of the series are detailed below.

• The EXCELLENT Series enables up to 50% fuel savings during winter months.
• Similarly, cooling costs are reduced by 40% in the summer.
• It delivers highly effective results in heat and solar control.
• Moreover, it allows natural sunlight to enter the space without any compromise.
• With the EXCELLENT Series, window surfaces remain warm in winter and cool in summer.
• It delays the formation of condensation on the glass.
• Compared to other double-glazed units, it shows significant differences in reducing condensation.
• Additionally, its durable structure ensures long-lasting performance and minimizes maintenance requirements.
• It contributes to environmental sustainability through superior energy efficiency.

WS SERIE PDF EXCELLENT SERIE PDF

ADVANTAGES OF USING INSULATED GLASS (IGU)

Thermal Control: Insulated glass units provide effective temperature regulation in buildings by reducing heat loss in winter and minimizing heat gain in summer.
Energy Savings: IGUs can reduce heating fuel consumption by up to 50% during cold months and decrease air conditioning costs by approximately 40% in hot months.
Heat and Light Management: These glass units optimize heat insulation and light transmission without compromising the quality of natural daylight.
Acoustic Comfort and Noise Reduction: Insulated glass systems significantly reduce external noise, creating a quieter and more comfortable indoor environment.
Enhanced Safety: When combined with laminated or tempered glass, IGUs offer a high level of security and durability.
Prevents Cold and Hot Spots: IGUs help maintain comfortable indoor temperatures by preventing window areas from becoming cold in winter or excessively hot in summer.
Reduced Condensation: Thanks to airtight sealing and gas filling, insulated glass units significantly delay or reduce fogging and condensation.
Durability and Weather Resistance: Manufactured with strong and durable materials, IGUs provide long-lasting performance against harsh weather conditions.
Versatility: A wide range of models are available to suit all facade types and building requirements.
Reflective Options: Reflective IGUs offer enhanced solar control for both interior and exterior environments.
Aesthetic Appearance: Colored and coated glass options add stylish and elegant design elements to any architectural project.

INTERNATIONAL STANDARDS

Float Glass: TS EN 572-2
Laminated Glass: TS EN ISO 12543
Tempered Glass: TS EN 12150
Partially Tempered Glass: TS EN 1863
Coated Glass (including Low-E): TS EN 1096
Frosted Glass: TS EN 572-5