Low-E coatings can be applied to both the exterior and interior glass surfaces of a window or door and deliver comfort and energy savings in both directions. On an exterior glass surface, a Low-E coating can reflect the heat of the summer sun or the cold of winter away from the home.
Low--E coatings can be applied to both the exterior and interior glass surfaces of a window or door and deliver comfort and energy savings in both directions. On an exterior glass surface, a Low--E coating can reflect the heat of the summer sun or the cold of winter away from the home.
Learn how Low E / LoĒ Glass is coated
How Low-E Glass Works
What Are Low-E Coatings For Windows?
Frequently Asked Questions
Does low-e glass go inside or outside?
The low-e coating is usually placed on one of the inside glass pane surfaces of the insulating unit. Homeowners can test for the low-e coating in a window by doing the following: Hold a lit match or a pen light up in front of the window.
Can low-e coating be applied to existing windows?
Retrofit Low-E Window Films. Adding low-Emissivity film coatings to windows: this article describes low-e window films that can be added to existing windows to improve window efficiency and improve solar gain in cold weather.
What surface should the low-e coating be on?
All Low-E Coatings must be on one of the interior surfaces of an insulating glass unit (#2 or 3 Surface) • Orienting the Low-E Coating to the #2 surface reduces solar heat gain and cooling costs. The insulating value (u value) of a Low-E insulating unit is the same whether the Low-E Coating is on the #2 or #3 surface.
Where is low-e coating applied?
Low-e coatings are applied to the various surfaces of insulating glass units. Whether a low-e coating is considered passive or solar control, they offer improvements in performance values.
How does the low E coating on glass work?
Low e glass has a special coating applied to one of the glass faces; this can be either a ‘hard coat’ or ‘soft coat’ depending on the actual coating process used. How does low e work? Heat energy from the sun is a radiant heat in the Infra Red spectrum, which is short wave radiation.
Are there different types of low E glass?
Not all Low-E coatings are created equal, nor is the Low-E coating on glass units manufactured today the same as it was as recently as two or three years ago. Advances in glass coatings technology and stronger regional energy code requirements have helped to create a new generation and more sophisticated array of Low-E glass options.
Can a low E coating be used on metal?
Never allow the low E coating to come into contact with metallic objects (blades, watches, rings, scourers etc) as it can leave behind deposits which show up on the glass as stains or scratches. The following solution can be used to remove staining caused by contact with metal objects –
Is it OK to use low E glass in winter?
Because low-E blocks sun, it may leave some rooms cooler than you want in the winter. As a result, you should ask your window installer how low-E glass will affect the room's temperature during the winter.