IG Units

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IG Units are two panes of glass that have been sealed together to create a thermal barrier. The gap between the two panes is filled with argon, and the unit is sealed tightly for maximum insulation. This helps keep heat in during cold weather and out during hot weather, reducing energy bills. IG Units are often used in both residential and commercial applications, due to their energy efficiency.

The most common types of IG units are double pane windows, triple pane windows, and Low-emissivity (Low-E) coated glass. Double pane windows use two layers of glass with an argon gas-filled space between them, while triple pane windows use three layers of glass with two argon gas-filled spaces between them. Low-E coated glass is specially designed to reflect heat, making it even more energy efficient.

IG Units are durable and feature long lifespans, so they make great investments for any home or business. Additionally, the units come in a variety of shapes and sizes to fit any window size or style. Furthermore, they are easy to install and require very little maintenance. With all of these benefits, it’s easy to see why so many people choose IG Units for their buildings.

Our IG Units products are produced locally, end to end.

Step 1: Glass Preparation

The two panes of glass that will be used to make the sealed unit are measured and cut to size either by hand or using an automatic cutting table, which reduces waste and manpower. Glass panes are then fed through a glass washer/dryer using demineralized or deionised water. After being washed, the operator thoroughly inspects the glass. For leaded units, the leading is applied to the glass which is then fed through the washer a second time.

Step 2: Spacer Frame Construction

The Tubular Spacer bar can either be bent or cut and used with corner keys to construct a frame that will be used to create an airspace between the two panes of glass in a double glazing sealed unit. The width of the spacer bar determines the cavity depth within the sealed unit. Spacer tubes can be made with aluminum, steel or warm edge options.

Step 3: Desiccant Filling

The completed spacer frame is filled with desiccant. This absorbs any moisture that may be trapped in-between the two panes of glass during the manufacturing process, or which finds a way into the sealed unit throughout the lifetime of the unit.

Step 4: Gas Filling

At AWG, we add an Argon gas fill to our sealed units. Adding Argon is a means of improving the thermal efficiency of your unit to produce a high performance glass sealed unit.

Step 5: Sealing

There is a Primary Seal and Secondary Seal on the Sealed Glass Unit. The Primary Seal is usually Polyisobutylene, or PIB< which is applied to both edges of the spacer tube framework. This is carefully pressed in place between the two panes of glass, usually via machine but can be done by hand. Care needs to be taken to ensure PIB covers the joints where the key and bar meet. There are various options of secondary sealant, which can be applied to the outer edge of the units to provide a dual seal.