Low-E Insulating Glass (Low-E IGU) Limitations

The silver-ion metallic film deposited on the surface of Low-E glass is exceptionally vulnerable. Exposure to atmospheric moisture, oxygen, or other airborne contaminants triggers a chemical reaction that can lead to discolouration, blackening, or even complete detachment (peeling) of the coating.

Low-E Insulating Glass Units (IGUs) contain air or an inert gas (e.g., argon) in the cavity. Air continuously oxidises and degrades the Low-E coating, causing its performance to progressively decline until it eventually discolours and fails. Argon is susceptible to leakage, which ultimately renders the Low-E film ineffective.

Crucially, the Low-E coating within the IGU cavity only mitigates radiant heat transfer. It offers no defence against heat loss via gas convection and conduction.

LandVac Titanium Vacuum Glass Advantages

In sharp contrast, the Low-E coating in LandVac Titanium Vacuum Glass is sealed within a vacuum cavity. This vacuum environment serves to protect the metallic film from oxidation and eliminate heat transfer caused by gas convection and conduction. As a result, the thermal insulation performance of titanium vacuum glass is fourfold (4x) that of a standard Low-E IGU with a comparable configuration.

Furthermore, LandVac VIG is constructed through integrated titanium alloy welding. The edge seal employs titanium alloy materials and is entirely free of silicone sealant, guaranteeing stable performance for 80 years without deterioration. Its theoretical service life is five times (5x) longer than that of a Low-E IGU.