SunGuard IS 20

Boost performance to meet U-value requirements

It can be a challenge to minimize heat loss in cold climates, and cooling loss in warm regions. Enter SunGuard® IS 20 coated glass. This interior-surface solution helps buildings meet strict energy code requirements by improving U-value performance in double-glaze and triple-glaze units.

Key Features:

Neutral color: Features a low haze and an ultra-smooth surface
High light transmission: Allows for more visible light indoors
Easy maintenance: Able to be cleaned with common glass cleaners
Greater energy savings: Helps projects qualify for LEED® credits

Product Downloads:

IS 20 Flyer Sunguard brochure IS 20 Technical information

Product Information

Glass Substrates

  • Clear
  • Guardian UltraClear® Low iron

Applications

  • Facades
  • Windows
  • Doors
  • Curtain Walls
  • Roofs
  • Skylights

Manufacturing Options

  • Tempered
  • Laminated
  • Curved
  • Heat Strengthened

Recommended coating positions

  • Double glazed: #4 surface
  • Triple Glazed: #6 surface

Performance Data

SNX 62/27 w/ IS 20(#4) SNX 62/27 w/ IS 20(#4)

  • TRANSMITTANCE

    1. Visible Light 60%
    2. Ultraviolet 6%
    3. Solar Energy 22%
    4. Light to Solar Gain (LSG) 2.33

  • Reflectance

    1. Visible Light Outside 12%
    2. Visible Light Inside 13%
    3. Solar Energy Outside 40%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.20
    2. Winter Nighttime - Air 0.23
    3. Summer Daytime - Air 0.21

  • Heat Gain

    1. Relative Heat Gain (RHG) 62%
    2. Solar Heat Gain Coefficient (SHGC) 26%

  • Composition

    1. IG 6 mm/12.7 mm/6 mm
    2. Outboard lite SNX 62/27 on Clear - #2 surface
    3. Inboard lite SunGuard IS 20 on Clear - #4 surface
    4. Calculation Standard NFRC-2010

See product specifications

SNX 51/23 w/ IS 20(#4) SNX 51/23 w/ IS 20(#4)

  • TRANSMITTANCE

    1. Visible Light 50%
    2. Ultraviolet 10%
    3. Solar Energy 18%
    4. Light to Solar Gain (LSG) 2.23

  • Reflectance

    1. Visible Light Outside 14%
    2. Visible Light Inside 14%
    3. Solar Energy Outside 36%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.20
    2. Winter Nighttime - Air 0.23
    3. Summer Daytime - Air 0.21

  • Heat Gain

    1. Relative Heat Gain (RHG) 54
    2. Solar Heat Gain Coefficient (SHGC) 0.22

  • Composition

    1. IG 6 mm/12.7 mm/6 mm
    2. Outboard lite SNX 51/23 on Clear - #2 surface
    3. Inboard lite SunGuard IS 20 on Clear - #4 surface
    4. Calculation Standard NFRC-2010

See product specifications

SN 68 w/ IS 20(#4) SN 68 w/ IS 20(#4)

  • TRANSMITTANCE

    1. Visible Light 66%
    2. Ultraviolet 29%
    3. Solar Energy 32%
    4. Light to Solar Gain (LSG) 1.82

  • Reflectance

    1. Visible Light Outside 12%
    2. Visible Light Inside 13%
    3. Solar Energy Outside 33%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.20
    2. Winter Nighttime - Air 0.24
    3. Summer Daytime - Air 0.22

  • Heat Gain

    1. Relative Heat Gain (RHG) 87
    2. Solar Heat Gain Coefficient (SHGC) 0.36

  • Composition

    1. IG 6 mm/12.7 mm/6 mm
    2. Outboard lite SN 68 on Clear - #2 surface
    3. Inboard lite SunGuard IS 20 on Clear - #4 surface
    4. Calculation Standard NFRC-2010

See product specifications

SN 54 w/ IS 20(#4) SN 54 w/ IS 20(#4)

  • TRANSMITTANCE

    1. Visible Light 52%
    2. Ultraviolet 15%
    3. Solar Energy 23%
    4. Light to Solar Gain (LSG) 1.94

  • Reflectance

    1. Visible Light Outside 14%
    2. Visible Light Inside 19%
    3. Solar Energy Outside 35%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.20
    2. Winter Nighttime - Air 0.24
    3. Summer Daytime - Air 0.22

  • Heat Gain

    1. Relative Heat Gain (RHG) 65
    2. Solar Heat Gain Coefficient (SHGC) 0.27

  • Composition

    1. IG 6 mm/12.7 mm/6 mm
    2. Outboard lite SN 54 on Clear - #2 surface
    3. Inboard lite SunGuard IS 20 on Clear - #4 surface
    4. Calculation Standard NFRC-2010

See product specifications

SNR 43 w/ IS 20(#4) SNR 43 w/ IS 20(#4)

  • TRANSMITTANCE

    1. Visible Light 42%
    2. Ultraviolet 17%
    3. Solar Energy 18%
    4. Light to Solar Gain (LSG) 1.92

  • Reflectance

    1. Visible Light Outside 28%
    2. Visible Light Inside 15%
    3. Solar Energy Outside 43%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.20
    2. Winter Nighttime - Air 0.23
    3. Summer Daytime - Air 0.21

  • Heat Gain

    1. Relative Heat Gain (RHG)
    2. Solar Heat Gain Coefficient (SHGC)

  • Composition

    1. IG 6 mm/12.7 mm/6 mm
    2. Outboard lite SNR 43 on Clear - #2 surface
    3. Inboard lite SunGuard IS 20 on Clear - #4 surface
    4. Calculation Standard NFRC-2010

See product specifications