NOTE: Tested units include argon. The
laminate has 1/4" inner pane. Based on
Lawrence Berkeley Lab (LBL) Window
5.2 © 2003 analysis for classical UV
Kolbe offers numerous options to achieve the optimum energy efficiency for the geographic region in which you live.
To improve thermal efficiency, microscopically thin coatings are applied to the glass that is used in the insulated glass units
incorporated into our windows and doors. The state-of-the-art application of the LoE coating is known as sputter coating.
There are a number of coating options available, and the appropriate one should be chosen for either the specific geographic
region or building construction design required to help achieve the highest level of energy performance possible. As
standard, we use double-pane insulating LoE
-270 glass. In energy zones with a warmer climate, LoE coatings can be used
to significantly block the amount of heat transfer, reducing the load of air conditioning systems. In colder climate zones, LoE
coatings can be used to allow for high solar heat gain, resulting in reduced heating and cooling costs throughout the year.
LoE coatings also reduce the potential for condensation, as well as provide protection against fading of furniture, fabrics
and carpeting. Numerous glass options and combinations are available for different applications and various geographic
regions. Special glass requests are also welcomed.
When the weather turns frigid, LoE-180 glass is the perfect cold remedy.
It keeps homes warmer and more comfortable by blocking heat loss to
the outside and letting the sun’s heat stream in to increase solar heat
Wherever glare is a problem, LoE²-240 glass is a solution to maintain
year-round comfort in warmer climates. In summer, it blocks oppressive
solar heat gain and maintains cool glass temperatures. When winter
rolls around, it keeps inside glass temperatures warm.
LoE²-270 glass delivers year-round comfort in most types of weather.
Offering a balance of high clarity and low solar heat gain, LoE
standard in most Kolbe products. In summer, it rejects the sun’s heat
and damaging UV rays. In winter, it reflects heat back into the room.
For warm climates, LoE³-366 delivers a balance of solar control and
high visibility. This coating helps provide protection of fading, blocking
up to 95% of the sun’s damaging rays.
ThermaPlus LoE is an additional interior coating applied to help meet the strictest energy requirements and provide
protection against heat loss and UV damage.
Argon gas is a colorless, odorless, non-toxic, naturally-occurring element that is inert, meaning it will not react with other
elements or gasses. Because argon gas has a thermal conductivity 30% lower than air, the use of argon gas in a LoE coated
insulated glass unit allows it to provide for an incremental improvement to the overall U-factor of the unit. For increased
energy efficiency, argon is supplied, at no additional cost, in all LoE coated insulated glass units, with the exception of those
units when glass dimensions are less than 14" x 14" or units that require capillary/breather tubes due to being shipped over
or installed in high altitude elevations. Units constructed without argon gas will have higher U-values.
High altitude situations occur when Kolbe double pane insulated glass units are shipped over or installed in areas that begin
at 5000 feet above sea level. For triple pane insulated glass units, high altitude begins at 3500 feet above sea level. To find
the energy performance for units in high altitude situations, use our energy database at kolbe-kolbe.com and select
the fill option for double or triple pane glass.