Rain getting in, airflow dropping, or façades that just don’t look right? Commercial Weather Louvres solve all three. Designed to work seamlessly with Extractor Fans, they protect openings, maintain airflow, and keep buildings performing properly—whatever the UK weather decides to throw at them.
When managing airflow in commercial buildings, the details matter. Extractor Fans rely on properly specified external components to perform at their best, and that’s where Commercial Weather Louvres come in. Designed to protect ventilation openings from wind, rain, and debris, they help maintain airflow while safeguarding the building envelope—no matter the conditions.
High-Performance External Weather Louvres & Construction
External airflow points are exposed to the elements. That’s where external weather louvre systems play a critical role. Designed to reduce water ingress while allowing consistent ventilation, they’re a key component in modern louvres construction.
Whether you’re upgrading an existing façade or specifying ventilation for a new build, our Commercial Weather Louvres combine durability with proven performance.
Large Commercial Weather Louvres for Plant Rooms
Plant rooms require serious airflow. Boilers, chillers and air handling units all generate heat that needs controlled extraction.
Large commercial weather louvres are ideal for:
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Rooftop plant enclosures
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Service risers
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Data centres
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Industrial facilities
They’re manufactured in robust aluminium or galvanised steel and sized to handle high-volume air movement. If airflow is the priority, selecting the correct blade profile and weather louvre free area is essential.
Architectural Louvres and Bespoke Finishes
Function is vital. But appearance matters too.
Architectural louvres are designed to blend seamlessly with façades while maintaining ventilation performance. Powder-coated finishes, bespoke sizing and concealed fixings allow you to match design intent without compromising airflow.
Ideal for commercial offices, schools and retail spaces where visual impact counts.
Specialist Circular Louvres for Round Ducting
Working with round ductwork? Circular or spigot-mounted louvres provide a practical solution for terminating exposed duct runs.
Often used with hvc louvres or similar systems, they offer a neat finish while maintaining external weather protection. Simple, effective and easy to install.
Technical Specification: Weather Louvre Free Area & Performance
Performance isn’t just about size. It’s about efficiency.
Understanding Weather Louvre Free Area and Airflow Efficiency
The weather louvre free area refers to the open space through which air can pass. A higher free area typically means improved airflow, but blade design and rain defence ratings also matter.
When selecting Commercial Weather Louvres, consider:
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Free area percentage
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Airflow resistance
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Water penetration class
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Wind loading performance
Balancing these factors ensures your system supports airflow demands without compromising weather protection.
Leading Brands: Gilberts, HVC, and Lindab Louvres
Brand reliability matters on commercial projects. That’s why many contractors and consultants look for proven manufacturers.
Gilberts and HVC Louvres: Professional Air Distribution
Gilberts louvres and hvc louvres are widely specified in commercial developments. Known for consistent performance and compliant testing standards, they’re suitable for schools, healthcare settings and industrial applications.
They offer a range of blade profiles, performance classes and custom sizes to suit project requirements.
Lindab Louvres for Commercial Ventilation Systems
Lindab louvres integrate seamlessly with broader ducting and ventilation systems. Designed for efficiency and ease of installation, they’re well suited to modern commercial builds where system compatibility is key.
If you’re coordinating full ventilation packages, choosing compatible components simplifies installation and long-term maintenance.
FAQs
What is a weather rated louvre?
A louvre tested to resist wind-driven rain while allowing airflow.
What are the different types of louvres?
Weather louvres, acoustic louvres, architectural louvres and fire-rated louvres.
Can louvres be fire rated?
Yes, specific models are designed to provide fire resistance.
Do aluminium louvres attract heat?
They absorb some heat, but reflective finishes reduce heat gain.
- 10 sizes (150 to 600mm)
- 45° blade, 90% free area
- Aluminium, bird mesh