An improvement that can be made to the thermal performance of windows is to reduce the conductance of the air space between 2 panes of glass in an insulated glass unit (IG). Normally that space is just filled with ambient air prior to being sealed, however by filling that space with a heavier, less conductive gas, measurable gains can be made in the unit’s ability to slow the transfer of heat and cold through the glass. A bonus side effect is that slowing effect applies to sound as well. That means by gas filling your windows, you can help reduce the noise level that comes in your home from the outside, leaving the inside of your home quieter and more peaceful.
Argon is a colorless, odorless, non-toxic, non-reactive gas, which is heavier than air. Inexpensive to produce, Argon performs best in windows with a large airspace between the panes of glass. Custom Built’s windows utilize an overall glass thickness of at least 7/8″, which fits in perfectly with Argon’s optimal application.
While benefits can be seen when utilized alone, Argon performs at its peak when combined with Low-E glass.