The Window Man Replacement Windows
The Window Man Replacement Windows

Glass Basics

Different glass types not only vary greatly in looks, but different styles can help secure your house and lower utility bills.

Glass style:

  • Laminated Glass
    • Laminated is also known as "IMPACT" glass. Laminated glass does not shatter when broken, instead in fractures and looks like a spiderweb. Its similar to the material front windshields in cars are made out of. It also has a higher STC (Sound Transmission Class) rating because it dampens noise. Blocks 99% UV light.
  • Obscure Glass
    • Obscure glass is any kind of glass that is designed to change the view through it. They are commonly used in Entry Door and bathroom windows.
  • Low E Glass
    • Low E stands for low emittance. It is a coating that can be placed on window panes to reduce the U Factor, or rate of heat loss.
  • Argon or Kynar Gas
    • You might have heard Low E and Argon used together a lot in window talk. Argon is a gas that when placed in between panes of glass reduces the conductance of the air space. By doing this the glass lets less heat/cold into your house, lowering the U Factor and your utility bills 

 Sound Abatement: 

  • Noise transmittance is measured in STC (Sound Transmission Class). The higher the STC rating the more noise is blocked by your window
    •  Noise transmittance can also be effected by other factors such as: proximity to noise, doorways, walls, and roofing
  • If noise is your problem, click here to learn more

Energy Ratings:

  • There are multiple rating systems to reflect a windows energy efficiency:
    • AAMA (American Architectural Manufacturer's Association)- measure water leakage, air leakage, and structural strength
    • NFRC (Nation Fenestration Rating Council)- test rate of heat loss, solar heat efficiency, light transmittance, and condensation resistance
    • Energy Star- does not test products , sets minimum ratings for NFRC
  • Federal Tax Credits require certain qualifying energy ratings


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