ACRYLITE® Soundstop XT with Bird Guard

Transparent Noise Barriers


This is a highly transparent specialty grade of acrylic that helps to prevent bird collisions.


In addition to the well-known and proven properties of standard ACRYLITE® sheet, such as:

  • Excellent light transmission and brilliance
  • Superior weather resistance
  • Ease of fabrication
  • High surface hardness
  • Lightweight – half the weight of glass
  • 11 times the impact strength of glass

Special Features

  • Many traditional sound barriers create a tunnel effect when driving, but the transparency of ACRYLITE® Soundstop XT with Bird Guard allows for more comfortable driving conditions.
  • It offers a superior sound reduction rating (STC) of 32 dB or higher by ASTM E90.
  • Large noise barrier panels reduce the need for excess supporting structures and thus enhance the transparency of the barrier.
  • It is available in colorless sheet as well as various transparent colors.
  • Embedded black stripes reduce the likelihood of bird collisions.


These properties make ACRYLITE® Soundstop XT with Bird Guard especially suitable for:

  • Noise control along roads and railways
  • Wind barriers on bridges
  • Impact resistant glazing for pedestrian bridges/greenways


  • It can be machined just like standard ACRYLITE® sheet.

Physical forms

This material is available in the following sizes, thicknesses, and stripe directions:

Length: up to 20ft (6.1m)

Width: up to 6.5ft (2.0m)

Thicknesses: 15, 20, 25 mm

Stripe direction:

  • (-XLA) along length
  • (-XLD) along width
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Typical Values – ACRYLITE® Soundstop XT with Bird Guard

Physical PropertiesTest StandardValue
Specific Gravity ASTM D792 1.19

Tensile Strength

Elongation at Break (%)

Modulus of Elasticity


10,000 psi (69 MPa)


400,000 psi (2,800 MPa)

Flexural Strength

Modulus of Elasticity


17,000 psi (117 MPa)

480,000 psi (3,300 MPa)

Compressive Strength (Yield) ASTM D695 17,000 psi (117 MPa)

Resistance Against Stone Projectiles

(15 mm thickness)

EN 1794-1 Pass
Impact - Windborne Debris in Hurricanes ASTM E1996 Pass
Optical (Colorless)
Refractive Index ASTM D542 1.49

Initial Light Transmission

15 years natural outdoor weathering

ASTM D1003



Initial Haze

15 years natural outdoor weathering

ASTM D1003



Initial Yellowness Index

15 years natural outdoor weathering




Sound Transmission
Sound Transmission Class (STC) ASTM E90

32 dB at 15mm

34 dB at 20mm

36 dB at 25mm

Weight per Square Foot

15mm thickness

20mm thickness

25mm thickness

3.66 lb/ft2 (17.9 kg/m2)

4.86 lb/ft2 (23.8 kg/m2)

6.1 lb/ft2 (29.8 kg/m2)

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ACRYLITE® Soundstop XT with Bird Guard next to a walkway in North Vancouver, BC