Q: What is the K-value (U-value) of LandVac vacuum glass if it is made with clear glass instead of Low-E coating?

A: If LandVac Titanium vacuum insulated glass (VIG) is manufactured entirely with standard clear glass (without Low-E coating), its K-value is approximately 2.2 W/(m²\K). The Reason: The core function of the vacuum layer is to eliminate heat transfer through conduction and convection. However, it cannot block thermal radiation. Without a Low-E (Low-Emissivity) coating to reflect infrared heat, the radiation still passes through, limiting the thermal insulation performance. 

Note: If you are concerned about the slight "haze" or tint associated with standard Low-E glass, we recommend using High-Transmittance Low-E or Ultra-Clear (Low-Iron) Low-E glass. These options meet strict energy-saving requirements while providing a crystal-clear, high-transparency visual effect.