The gases used within the panes glass in an IGU is as follows.

Argon (most commonly used in vinyl windows)

Krypton (High thermal retention properties)

Xenon (Most expense with equal benefits)

The benefit of having windows with these gases in between the pane is reduced condensation and heat loss.

The thickness of the glass which make up an IGU is also important since thinner glass tend to more readily conduct temperature. Insulated units uses glass that is between 3 to 10 millimeters in thickness.

In most cases both panes of glass are usually the same thickness, in special cases different thickness are used to assemble the IGU. By selecting a window that uses different glass thickness, the benefits can be a more cost effective window that may offer equal efficiency as well as excellent acoustic value.
Only some manufacturer actually offer this as an option to their customer.

A double glazed unit has four faces and a triple glazed unit has six. On a double pane insulated glass unit the surface are as follows:

Surface #1 – Facing exterior
Surface #2 – Interior face of exterior pane
Surface #3 – Interior face of Interior pane
Surface #4 – Facing interior

Low-e coating or Low-emissivity coating is an transparent metal film which is applied to the interior face of the interior or exterior pane of glass to reduce the amount of harmful ray of sun light form enter the living space.

What this means is, furniture and wood flooring would fade less if exposed to these long infrared wave lenght from a sun exposure.

The spacer, seemingly simply is underestimated for it functionality and thermal significant in an insulated unit.

There are two types of spacers (generally), one is an aluminum spacer and the other is vinyl. One is also outdated and less efficient than the other.

Aluminum spacer were initially used in the assembly of insulated glazed units (infant technology). The aluminum spacer are fill with a substance (no liquid) that promote dryness within the aluminum space itself.
What this does is reduces the likelihood of condensation forming on the window panes.

Vinyl windows with vinyl spacer are the recommendation by experts, because its a known fact that aluminum has a high conductivity ratio than vinyl and also carry more weight. Vinyl spacer is part of a new bred of spacer known as warm edge technology (WET). These spacer reduce heat transfer and condensation considerably.

For more tips visit http://www.reading-detailing-house-plans.com

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