Urban planning has always faced a difficult conflict: how do we protect communities from highway and railway noise without building oppressive concrete walls that block sunlight and destroy the landscape?
Urban planning has always faced a difficult conflict: how do we protect communities from highway and railway noise without building oppressive concrete walls that block sunlight and destroy the landscape?
The solution lies in 15-20mm PMMA Acoustic Sheets. While glass was traditionally the go-to for transparency, heavy-gauge acrylic has become the industry standard for soundwalls across Europe. It offers the same optical clarity as glass but with significantly higher impact resistance and a safety profile that prevents dangerous shattering. In public infrastructure, however, performance is not just about aesthetics; it is about certified compliance with European Standards.
For a noise barrier to be legally installed on European roads, it must generally comply with EN 14388, and specifically EN 1793-2 for acoustic performance. The most important metric is the sound reduction index, where a high-quality 15mm or 20mm PMMA sheet typically delivers a reduction of 30 to 34 decibels. This level of performance places the material in Category B3, the highest standard classification for airborne sound insulation, ensuring that traffic roar is effectively dampened before it reaches residential zones.
Unlike acoustic fencing in private gardens, highway barriers face extreme conditions ranging from gale-force winds to stones kicked up by trucks. Under EN 1794-1, sheets are tested to ensure they can withstand the impact of a stone projectile without cracking or shattering in a way that endangers traffic. Furthermore, the sheer rigidity of cast acrylic in these thick gauges allows it to withstand significant static wind loads without bowing, provided the installation accounts for the coefficient of linear thermal expansion by using flexible EPDM rubber gaskets that allow the sheet to float safely during temperature shifts.
Understanding the alphabet soup of certifications from Fire Safety to Impact Ratings can be complex, but it is essential for compliant infrastructure projects. We have compiled a comprehensive guide to help you navigate these requirements for all our technical plastics, which you can view on our full Plastic Standards and Classifications page. SRT Plastics supplies cut-to-size acoustic acrylic sheets compliant with European noise reduction standards; contact our engineering team today for data sheets and project support.
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Urban planning has always faced a difficult conflict: how do we protect communities from highway and railway noise without building oppressive concrete walls that block sunlight and destroy the landscape?
