Is Low Emmisivity (Low-e) Glass better than Double Glazing?

No.

Low Emmisivity Glass is not better than double glazing. Double glazing gives better performance for your windows. Double glazing can also be used in conjunction with Low Emmisivity Glass to achieve better performance results. Low-e glass may result in a more cost effective option in warmer climates if utilised with a tint. Utilising Low-e glass within a insulating Glass unit also has the added benefit of sealing the coating within the unit. This protects the Low-e coating from scratches and harsh chemicals, allowing for a longer life. To check how to properly care for your low-e glass please contact the glass manufacturer.