Overview

Switchable™ glass and smart film both use PDLC (Polymer Dispersed Liquid Crystal) technology to provide controllable privacy by switching between transparent and opaque states. While they share similar functional behaviour, they differ significantly in construction, durability, installation, and long-term performance. Understanding these differences helps determine the most suitable solution for a given application.

Core Difference

The primary distinction lies in how the PDLC layer is integrated.

Switchable™ glass is manufactured as laminated glass with the PDLC interlayer sealed within the structure during production.
Smart film is typically applied to the surface of existing glass as a retrofit solution.

This difference affects durability, appearance, and long-term performance.

Construction and Durability

Switchable™ Glass

• Laminated glass structure
• PDLC layer sealed within the glass
• Protected from external wear and damage
• Designed for long-term use
• Suitable for permanent installations

Smart Film

• Applied to the surface of existing glass
• More exposed to environmental and physical wear
• Typically used for retrofit applications
• May require replacement over time

Switchable™ glass generally provides greater durability due to its integrated laminated construction.

Optical Clarity and Appearance

Switchable™ Glass

• Consistent optical clarity when transparent
• Uniform light diffusion when opaque
• Clean, integrated appearance
• No visible surface layer

Smart Film

• Optical performance depends on application quality
• May show slight surface texture or edge visibility
• Appearance influenced by installation method

Switchable™ glass is typically preferred where optical clarity and finish are important.

Installation Differences

• Switchable™ Glass
• Installed as part of a glazing system
• Electrical wiring integrated during installation
• Suitable for new builds and permanent glazing
• Requires professional specification

Smart Film

• Applied to existing glass surfaces
• Can be used for retrofit installations
• Electrical connection added separately
• Less structural integration

The choice often depends on whether the installation is new or retrofit.

Performance and Lifespan

Switchable™ Glass

• Long operational lifespan
• PDLC layer protected within laminated structure
• Consistent performance over time
• No exposed functional layer

Smart Film

• Lifespan varies depending on environment and use
• Surface exposure may affect long-term performance
• May require maintenance or replacement
• Switchable™ glass is generally used where long-term durability is required.

Cost Comparison

Smart film is often lower in upfront cost due to its retrofit nature, while Switchable™ glass typically represents a premium glazing solution because of its laminated construction and integration. However, long-term durability, performance consistency, and maintenance considerations can influence overall value.

Typical Use Cases

Switchable™ Glass

• Commercial office partitions
• Healthcare privacy glazing
• Architectural glazing systems
• Permanent installations
• High-spec environments

Smart Film

• Retrofit privacy applications
• Existing glazing upgrades
• Temporary or adaptable installations
• Budget-conscious projects
• Each solution serves different project needs.

Which Should Be Chosen?

The choice depends on project priorities.

Switchable™ glass is generally preferred where:

• Long-term durability is required
• Integrated laminated glazing is needed
• Optical clarity is important
• Installation is part of a new glazing system

Smart film may be suitable where:

• Retrofitting existing glass is required
• Lower upfront cost is preferred
• Structural replacement is not feasible

Selecting the correct solution depends on application, specification, and long-term performance requirements.

Learn More

For a full technical explanation of how the technology operates, see How Switchable™ Glass Works.

For a complete overview of performance, benefits, and applications, see the Complete Guide to Switchable™ Glass.

For a clear definition, see What is Switchable™ Glass?

You can also explore further comparisons and technical explanations within the Your Questions Explained knowledge hub.

Frequently Asked Questions

Do Switchable™ glass and smart film use the same technology?
Yes. Both use PDLC technology to switch between transparent and opaque states.

Is Switchable™ glass more durable than smart film?
Yes. Switchable™ glass has the PDLC layer laminated within the glass, providing greater protection and long-term durability.

Can smart film be applied to any glass?
Application depends on glass condition, size, and electrical integration requirements.

Does smart film perform the same as Switchable™ glass?
Both provide similar switching behaviour, but durability, optical clarity, and long-term performance may differ.

Which is better for permanent installations?
Switchable™ glass is generally preferred for permanent installations due to its laminated structure and durability.

In simple terms, Switchable™ glass is integrated within laminated glass for long-term durability, while smart film is applied to existing glass for retrofit applications.