CALM Acoustic Louvres
At Colt, we have been designing, manufacturing and installing award-winning louvre systems for over 50 years. Our in-house louvre team can support you from the initial planning and design stages, right through to the final installation. We’ll work with you to understand your project requirements and vision, developing a tailored louvre solution that delivers on both performance and aesthetics. Our end-to-end approach ensures reliable timelines for delivery and excellent quality at every stage.
What is an acoustic louvre?
Acoustic louvres are specially designed to limit the amount of noise transmitted through the louvre whilst still providing effective airflow and weather defence. They are most commonly used around plant rooms, substations and cooling towers where noise transfer from the mechanical equipment to the surrounding environments needs to be limited.
How does the blade profile affect an acoustic louvre?
We supply our CALM Acoustic Louvre Modules in two blade profiles: straight and chevron.
The straight blade designs provide a direct path for air to pass through the module, allowing them to deliver excellent aerodynamic efficiency whilst still limiting noise transfer. The chevron or V-shaped blades are designed to lengthen the path that sound waves need to travel to pass through the module and to help deflect them into the absorption material, maximising the noise reduction performance. This means they can deliver enhanced acoustic performance, particularly at mid to high frequencies, whilst maintaining effective airflow.
How is acoustic louvre performance measured?
There are two key measures used to measure the performance of acoustic louvres:
- Aerodynamic coefficient (Cv): This measures the rate at which air can pass through the unit. A higher Cv value means air can flow more efficiently through the louvre.
- Weighted sound reduction index (Rw): This measures the unit’s effectiveness at limiting airborne noise based on acoustic testing to BS EN ISO 10140-2:2021. A higher Rw value indicates the unit will limit noise more effectively. Along with the primary Rw value, we also provide two further correction values in brackets: C and Ctr. These adjust the Rw value based on performance with mid-frequency noise (C) and low-frequency noise (Ctr).
Where can CALM Acoustic Louvre Modules be installed?
Our CALM Acoustic Louvres are suitable for a wide range of applications where sound transfer in or out of a space needs to be limited. They’re most commonly used around areas housing mechanical equipment, such as plant rooms and substations or in sensitive industrial applications where noise transfer needs to be carefully limited to meet planning requirements.
How do I specify the right acoustic louvre for my project?
The most suitable acoustic louvre will depend on a variety of factors, including the ventilation requirements within the space, the level of sound attenuation and the available depth for the louvre unit. Our expert louvre team can work with you to understand your requirements and help find the right acoustic louvre solution for your project.
How can CALM Acoustic Louvres Modules be customised around my project?
CALM Acoustic Louvre Modules are highly customisable to meet the performance or aesthetic requirements of your project. The modular system can be used to create walls, installed in runs in virtually any width or height, and fully integrated with our other louvre options, including units offering additional weather protection. The units can be finished in a wide range of coatings and colour options, including marine-grade finishes for highly corrosive environments. Where active airflow control is required, COLT ventilators can also be fitted behind the CALM modules.
Specification, Manufacture, Installation
Specification
Louvre systems often need to balance a range of considerations, including airflow, acoustics, weather defence, sizing and aesthetics. We can help develop a custom solution to best meet your project requirements.
Manufacture
Our advanced louvre systems are all manufactured at our specialist facility which is operated to leading ISO standards. Its location here in the UK can also help to lower the embodied impact associated with transport and delivery vehicles when compared with systems that are manufactured and transported from overseas.
Installation
Our highly experienced installers fit louvre systems across projects of all sizes. We can also provide comprehensive project management services to ensure work is completed on schedule, to budget and to exacting standards.
Contact Us
We deliver tailored solutions across Louvres, Smoke Control and Climate Control. For more information on how we can help you with your project, get in touch with our team.