LoE²-270 glass delivers year-round comfort in most types of weather. Offering a balance of high clarity and low solar heat gain, LoE²-270 is 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.
Customers placing orders, with LoE-270, containing annealed and tempered products, will receive LoE-270 on the annealed glass units and LoE-272 on tempered units. The LoE coating of 272, for tempered units, will provide the closest match in function and visibility to the LoE-270 annealed units.
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.
The solar performance of LoE³-340 glass is unprecedented in a double pane unit, with no room-darkening tint required. With an SHGC of just 0.18, it greatly reduces oppressive solar heat gain. And, wherever glare is a problem, LoE³-340 controls that as well. Then, when the cold weather rolls around, its low U-factor reduces indoor heat loss. This results in year-round comfort in warm climates.
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 gain.
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 with glass dimensions 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 and select Air as the fill option for double or triple pane glass.
In doors, all panes are tempered for safety. Windows may be ordered tempered as well, which may be required due to the glass size and/or to meet local building codes. If broken, tempered glass shatters into small fragments rather than large, sharp shards.
Heat-strengthening and glass tempering are processes of heating annealed glass to approximately 1200° F (650° C) and then rapidly cooling it with air. The resultant piece of glass is approximately two to four times stronger than a piece of annealed glass. This increased strength is the result of permanently locking the outer surface molecules of the glass in compression and the center portion in compensating tension. When LoE tempered glass is required, because of the tempering process, specially formulated LoE coatings are used to match annealed glass coatings. Kolbe will supply tempered glass products that closest match in function and visibility to the standard annealed products supplied.
Inert gas dissipates over the life of the insulated glass unit. Kolbe does not warrant the amount or percentage of argon present in insulating glass or a specific level of unit thermal efficiency at any time after manufacture. Visit our energy database to select and view your specific window and its listed energy performance values.
Kolbe’s standard glass offerings are complemented by a state-of–the-art, stainless steel spacer bar system on most units. The advanced design of this system incorporates a stainless steel spacer with airtight bent corners and a dual-seal construction of compressed polyisobutylene (PIB) and silicone. Desiccants are contained in the spacer to eliminate the potential for moisture. These features combine to reduce the thermal transmission through the edge seal, creating better energy performance and increasing the roomside glass temperature while reducing the potential for condensation at the sash to glass interface as compared to aluminum spacer designs. Thermo-Edge spacers are one of the many quality details that define Kolbe windows and doors. Thermo-Edge spacers are not available on very small radius units, units with ½" insulated glass, with the Champagne or Dark Bronze Anodized spacer option, units with "pencil" bar grilles-in-the-airspace, or true divided lites. Available in stainless steel (standard) and black painted.
NOTE: LoE²-270 and other LoE coatings are trademarks of Cardinal IG; visit the Cardinal IG website for in-depth information about glass.