Low E Glass

Energy efficiency is a major concern for both home and business owners. Many property owners are looking for ways to reduce their energy consumption and costs. Low-E glass is one of the most effective ways to improve a property’s energy efficiency.


Low E glass is an energy-efficient glass coated with a layer of thin metallic oxide. The coating helps to reflect heat and block ultraviolet (UV) light Low E glass is available in a variety of different types, each with its own unique set of benefits.


When it comes to low-e glass, there are two main types: hard coat and soft coat.

Hard coat low-e glass is the more popular type. It is scratch resistant and can be used in single-glazed installations. However, it has a higher U-value and slightly greater haze levels than soft coat low-e glass.

Soft coat low-e glass is less common, but allows more visible light to enter while producing less visible haze. Its ultra-low emissivity also results in high U-values. The disadvantage of soft coat low-e glass is that it must be used in double-glazed windows and can have minor colour changes. Hard coat is more durable than soft coat.

What Does it Cost?

The cost of low-e glass can vary depending on the type, brand, and size. Hard coat low-e glass typically costs approximately $120 per square metre. Soft coat low-e glass usually costs approximately $240 per square metre.

What Are The Benefits Of Using Low E Glass?

low e glass

There are many benefits to using low E glass, including:

Reduced energy bills:

Low E glass helps to keep heat inside the room during winter and outside the room during summer. This can lead to reduced energy bills year-round.

Increased comfort:

Low E glass can help to create a more comfortable environment inside your home or office as it helps to regulate the temperature.

UV protection:

The coating on low E glass also helps to protect against harmful ultraviolet (UV) rays.

Common Problems With Low E Glass

There are a few problems that are associated with low E glass, including:

Condensation in Colder Climates:

Any condensation forms which forms on the coated surface of a single glazed Low E glass will cause it to lose its low emissivity performance characteristics and behave like regular float glass. In other words, condensation on the inside of the glass will cause it to lose all it’s benefits. Condensation is likely to form on the inside of the window on the coated glass surface if you live in very cold climates and double glazing would be the better option.

Easily Damaged:

The coating on low E glass is susceptible to scratches and other damage especially during installation. This can reduce the effectiveness of the glass and cause it to look unsightly.

Is Low E Glass Better Than Double Glazing?

Double glazing is superior in performance when compared to low-E glass in regions with extremes of both heat and cold because it minimises heat transfer from both within and without. However,  double glazing is also more expensive than single glazed low E glass windows. The best performance comes from combining both – that is, using low E glass in an insulated glass unit.


Low E Glass is a type of glass that has been designed to improve the insulation properties of windows and doors. It comes in various types, each with its own benefits, and it can be installed in a number of ways.

While some common issues can occur during or after installation, most people find that the benefits of using Low E Glass outweigh any potential issues.