5 Common Misconceptions About Electrochromic Glass
Electrochromic glass is an innovative technology that offers dynamic control over light and heat entering a building. However, several misconceptions persist about its functionality and aesthetics. Let's break down these myths and provide answers to some of the most common questions we receive.
#Myth 1: If different spaces of the building are in different tint states, the exterior aesthetic of the building will be compromised.
Many architects worry that the four tint states of electrochromic glass will result in four different exterior aesthetics, which they find unappealing. In reality, the only perceptible difference in appearance from the outside is between the clear and tinted states. The light, medium and full tint states look the same from the outside.
A more abrupt disruption to curb uniformity is actually the checkerboard effect that is created when shades and blinds are drawn inconsistently throughout the day. Electrochromic glass maintains a sleek and consistent look, enhancing the building's curb appeal.
#Myth 2: Full tint is like privacy glass. At 1% VLT, occupants can't see outside and lose their connection to the outdoors.
When we talk about "full tint," we're referring to the darkest tint state of SageGlass, designed to provide maximum glare control. The glass is only in this state during the limited times of the day when the orb of the sun is directly visible to occupants.
Contrary to some beliefs, electrochromic glass at 1% visible light transmission is not opaque and does not block visibility to the outside. Instead, full tint prevents uncomfortable glare conditions while ensuring that occupants maintain their connection with the external environment. For those seeking 100% privacy, day or night, electrochromic glass is not the answer.
#Myth 3: Both SHGC and U-Value change when electrochromic glass tints.
There are two key measures when evaluating the energy efficiency of glazing: U-value and the solar heat gain coefficient (SHGC). U-value is a measure of insulation and indicates how well a window resists heat loss (or gain in cold climates) while SHGC indicates how much solar heat passes through the window to the interior.
Electrochromic glass dynamically manages SHGC, adapting to changing light conditions to optimize energy efficiency. The U-value remains constant for a given insulated glass unit (IGU) makeup, similar to conventional low-e IGUs. The makeup of the IGU is adjusted to hit project-specific U-value targets.
#Myth 4: Dynamic glass has high embodied carbon.
Concerns about the embodied carbon of dynamic glass are valid, but significant strides have been made to reduce it. Take, for instance, our most recent North American Environmental Product Declaration (EPD). Compared to previous EPDs, we reduced the embodied carbon in our DGUs by 64%. Additionally, dynamic glass is both a window and shading solution. When compared to a typical low-e IGU with external louvers, SageGlass actually has a lower embodied carbon footprint.
#Myth 5: SageGlass just sells glass and controls.
This is accurate, but only part of the story. We provide a turnkey smart window solution, encompassing the insulating glass unit (IGU), software, and controls system that is designed to meet the specific requirements of your building. Our comprehensive service ensures that the system is installed, activated, and fully operational, so you don't have to worry about the rest. We take care of everything, providing seamless integration and functionality.
By addressing these common misconceptions, we hope to provide a clearer understanding of electrochromic glass and its benefits. This innovative technology not only enhances building aesthetics but also improves energy efficiency and occupant comfort.