Also known as double glazing. They are two panes of glass separated by a layer of
air or argon gas. The panels of glass are bonded together with a Super Spacer Multi
Layer Vapour Barrier and then the airspace is completely sealed with Hot Melt Butyl.
The air is hermetically sealed and acts as an insulator. Filling the unit with Argon
Gas will further improve the insulating properties.
Super Spacer’s Argon Gas Retention
Argon gas filling is an effective way to ensure a window system achieves optimal
thermal efficiencies. Argon is a colourless, odourless, non-flammable, non-reactive,
inert gas that reduces heat transfer through the insulating glass unit versus air.
It is the most popular type of insulating gas used in this application, although
krypton can also be used.
At manufacture, argon is injected between the two glass panels in an insulating glass
unit. Whether argon gas will do its job throughout the life of the window system
depends on the strength of the edge seal and the ability to keep the gas inside of
the IGU unit. Super Spacer resists argon gas escape, providing the industry’s most
consistent seal and the best gas retention rates of greater than 99 percent
The benefits of using an IGU compared to single-glazed windows:
Comfort in Winter. Heat loss can be reduced by up to 64% and there will be no more
cold zones near windows - Reducing heating costs.
Comfort in Summer. Ordinary windows allow up to 87% of the scorching summer heat
into your home. EFFICIENT’s IGU’s will help To keep you cool, and again saving you
on your cooling costs.
Peace and Quiet. An IGU can reduce the noise transmitted from outside by up to 65%.
Enjoy a more tranquil personal environment
For effective noise reduction it is recommended to have one or two panels
of laminated glass. For best results use Vlam Hush
You also need to consider other areas where noise can enter your home
- gaps around windows & door frames, walls and floors.
- insulation of the walls and ceilings
Reduce Condensation on your windows thanks to the all-foam formula Super Spacer
and better insulation offered by an IGU
No Need for expensive thermal drapes - just sit back and enjoy the view.
Brewsters Fringes. Brewsters fringes refers to the rainbow effect occasionally seen
in double glazing. This is not a deterioration or stain on the glass, but is simply
caused by light refraction between four glass surfaces of similar thickness and substrate.
This effect can usually be avoided by ordering unequal thicknesses of glass for
unit fabrication eg., 6mm glass/12mm airspace/5mm glass
Distortion. Tinted and reflectvie IGU’s may experience slight visual distortion or
bowing due to atmospheric/air changes. This is not considered a defect. This distortion
can be more obvious with tempered glass
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Argon Retention - NRC Study (Elmahdy/Yusuf) Percent Argon Gas Loss after Weather Cycling
Hot Melt Butyl
Silicone Dual Seal
*Simulates 5 years weather exposure. All units dual pane with hard-coated Low E Glass