Cyclone (Roof) Ventilators/whirly birds in Kenya
Cyclone roof ventilators—also called turbine ventilators, whirlybird ventilators, or rotary roof ventilators—are wind-driven systems designed to extract hot air, fumes, humidity, and dust from industrial and commercial buildings without using electricity. These Roof Ventilators in Kenya utilize natural wind movement and thermal convection to create a continuous airflow, making them one of the most energy-efficient ventilation solutions available in Kenya.
At Industrial Materials Kenya, we provide premium-grade cyclone roof ventilators engineered for durability, low maintenance, and optimal ventilation performance in factories, warehouses, workshops, and large buildings across Kenya and East Africa. Our units are designed to withstand Nairobi, Mombasa, Kisumu, Eldoret, and all local climatic conditions including high heat, coastal humidity, and strong winds.
Why Cyclone Roof Ventilators Are Critical for Industrial Buildings
Industrial buildings in Kenya typically face challenges such as:
Excessive heat buildup under metal roofs
Fumes from welding, painting, chemicals, and machinery
High moisture levels leading to corrosion and mold
Dust accumulation affecting worker comfort and product quality
Poor indoor air circulation resulting in low productivity
Cyclone ventilators provide a zero-energy, long-term, and maintenance-free solution to these problems.
How Cyclone (Turbine) Ventilators Work
Cyclone ventilators operate using two natural forces:
A) Wind Energy
When wind blows over the roof, it pushes the turbine to spin. The spinning action creates negative pressure, pulling hot air and contaminated air from inside the building and releasing it outside.
B)Thermal Updraft (Stack Effect)
Hot air naturally rises. Even on days with little or no wind, the internal heat causes the ventilator to rotate slowly, allowing consistent upward air movement.
This dual-action ensures 24/7 natural ventilation with zero power consumption, making cyclone ventilators cost-effective for both small workshops and large industrial facilities.
Key Benefits of Roof Ventilators in Kenya
Zero Electricity Costs
No wiring, no motors, no power bills. Completely wind- and heat-driven.
Significant Reduction in Indoor Temperature
This improves worker comfort, reduces heat-related stress, and increases productivity—especially in metal-roofed factories where heat accumulation is high.
Removes Fumes, Dust & Moisture
Ideal for industries handling solvents, chemicals, welding smoke, paint, varnish, food steam, and dusty environments.
Prevents Condensation & Roof Corrosion
Proper ventilation reduces moisture buildup, extending the roof lifespan.
Low to No Maintenance
Quality bearings and lightweight materials ensure smooth, long-term operation without servicing.
Noise-Free Operation
Modern ventilators operate quietly, even in strong winds
Environmentally friendly
No emissions, no energy consumption, long-lasting, and recyclable.
Enhances Indoor Airflow
When combined with side louvers or ridge vents, it creates a balanced ventilation system.
Benefits of Cyclone Ventilators to industries and buildings
A)Industrial Facilities
Fabrication and welding workshops
Factories and processing plants
Printing and packaging industries
Chemical plants and paint workshops
Metalwork and mechanical engineering shops
B)Commercial Buildings
Warehouses & go downs
Supermarket backrooms
Commercial kitchens
Storage units
C)Agricultural & Food Industry
Poultry houses
Livestock structures
Greenhouses
Grain storage units
D)Institutional & Public Buildings
School halls
Churches
Community halls
Laboratories
Laundries and boiler rooms
Product Specifications at Industrial Materials Kenya
Our Roof Ventilators Kenya come in multiple sizes and material options to suit different building types.
Available Sizes
500mm (20”) – medium factories & warehouses
600mm (24”) – large industrial buildings, high heat areas
Material Options
Aluminium: Lightweight, corrosion-resistant, ideal for most locations
Stainless Steel: Best for coastal areas and high-corrosion environments
Galvanized Steel: Strong, durable, and cost-effective
Base Types
Custom bases designed to fit all Kenyan roofing profiles:
IT4
IT5
Box profile
Corrugated iron sheets
Industrial steel roofing
Performance Features
Auto-lubricated ball bearings
UV-resistant fins
Rust-proof construction
Water-resistant design
High rotational efficiency
Capable of operating at wind speeds as low as 5 km/h
How Many Cyclone Ventilators Do You Need?
Our experts help calculate based on:
Building size (length, width, height)
Roof shape and ventilation openings
Type of industrial process
Heat generation level
Number of workers
Machinery in use
As a general guideline:
Medium warehouse (300–600m²): 4–8 unit
Large factory (1000m²+): 10–20 units of 600mm
We offer free consultation & sizing to ensure maximum airflow.
Professional & Efficient Installation Services
Industrial Materials Kenya provides full installation including:
On-site assessment
Sizing & ventilation design
Waterproof flashing installation
Cutting & fitting base plates
Secure mounting of ventilator
Leak-proof sealing
Testing and commissioning
We guarantee:
Strong, safe, and rainproof installations
Durable fittings suitable for long-term industrial use.
Why Choose Industrial Materials Kenya?
1.High-quality cyclone ventilators built for Kenyan climate
2.Professional installation services
Fast delivery across Kenya—including same-day delivery in Nairobi
Competitive pricing for single and bulk orders
Expert ventilation advice for maximum efficiency
Reliable customer support and after-sales service
We are committed to helping your building stay cooler, safer, and more energy-efficient.
Frequently Asked Questions (FAQ)
Do cyclone ventilators work without wind?
Yes. Even when there is no wind, thermal updraft (rising hot air) causes the ventilator to spin slowly, ensuring continuous airflow.
Do they require electricity?
No. They operate 100% on natural wind and heat.
Will cyclone ventilators allow rain to enter the building?
No. Their curved fins and spinning motion prevent rainwater from entering.
How long do they last?
Aluminium units last 10–15 years, while stainless steel ones can last 20+ years.
How many units do I need for my building?
It depends on the building size, roof height, and industrial activities. We offer free sizing assistance.
Can they be installed on any type of roof?
Yes. We customize the base to fit IT4, IT5, box profile, and corrugated sheets.
Do they make noise when spinning?
High-quality units operate quietly. Cheap units may rattle, but ours are built with high-grade bearings.
Are cyclone ventilators suitable for coastal areas?
Yes—choose stainless steel for maximum corrosion resistance.
How soon can delivery be done?
Same-day delivery in Nairobi. 24–48 hours for other towns.
Do you offer installation?
Yes, we provide full installation and ensure leak-proof performance.
Order Cyclone Roof Ventilators Today
Contact / WhatsApp: 0769 723 154
Email: info@industrialmaterials.co.ke
Delivery: Nairobi & all counties in Kenya
Installation: Available nationwide