Envirotech Systems offers the complete range of certified, high performance noise barriers to solve the noise problems.
» Proven, certified, sound transmission loss (Noise Reduction)
» Sound absorption to minimize reflected sound
» Tough, abuse-resistant steel/aluminum construction
» Weather-resistant, rust-proof, durable finishes which blend sympathetically with the surrounding landscape
» Supporting structural steel and/or installation services upon request.
standing barrier systems are sound absorptive/ reflective on one or both sides and offer excellent sound transmission loss characteristics and are easily assembled from prefabricated components.
Absorptive / Reflective Noise Barriers :
Sound absorptive surfaces reduce reverberant build-up between parallel barriers and other reflective surfaces and increase the ability of barriers to attenuate noise.
The absorptive face consists of a black breathable membrane, 25 x 25 black weldmesh and 17 vertical chamfered timber trims per 2.4 metre bay.
A five vertical trim finish is a more economical option where blending with the environment is not so crucial and a tough industrial face can be offered with heavy galvanised weldmesh.
In sensitive residential areas, where planning / conservation constraints are strict, the absorptive face may be finished with willow / hazel woven hurdles or thin vertical feather edged pales. This type of finish reduces the absorptive performance of the barrier slightly but there is a slight gain in the airborne insulation.
 Metallic Noise Barriers.pdf
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