Details

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Roof Smoke Extractors by EKG M&E Sdn Bhd

In the industrial and commercial hubs of KL and PJ, the roof is the most strategic location for smoke management. Because heat and smoke naturally rise, Roof Smoke Extractors are the primary defense against "Smoke Logging" and structural "Flashover." EKG M&E Sdn Bhd specializes in both mechanical and natural roof extraction systems, ensuring your facility remains compliant with BOMBA and Uniform Building By-Laws (UBBL).

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Mechanical vs. Natural Roof Extraction

Depending on your building’s height, volume, and fire load, we engineer one of two specialized roof-mounted solutions:

1. Powered Axial Smoke Extractors

These are high-capacity, motor-driven fans used in shopping malls, basement car parks, and high-rise atria where natural buoyancy isn't enough to clear the smoke quickly.

• High-Temperature Reliability: Equipped with Class H motors, certified to run for 2 hours at 250°C.

• Static Pressure Performance: Designed to pull smoke through long runs of fire-rated ducting.

• VFD Integration: While utilized for daily "purging" of hot air or CO2, they feature a "Fire-Mode" override to run at 100% capacity during an alarm.

2. Natural Smoke and Heat Exhaust Ventilators (NSHEV)

Commonly used in large warehouses and factories, these are automatic hatches that open to let smoke escape via natural buoyancy.

• Fail-Safe Mechanism: Opens via a Fusible Link (heat-activated) or a 24V DC signal from the fire panel.

• Zero Power Dependency: Uses gas springs or gravity to open, ensuring operation even during a total power failure.

• Dual-Purpose: Can be opened during the day for free natural cooling and daylighting.

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Engineering for the Malaysian Climate

Installing equipment on a roof in the Klang Valley requires specific M&E considerations to ensure long-term durability:

• Watertight Integrity: We utilize high-grade EPDM gaskets and specialized bird-beak flashing to ensure that even during heavy tropical downpours, your roof extractors remain 100% leak-proof.

• Corrosion Resistance: Our extractors feature powder-coated galvanized steel or aluminum housings to withstand high humidity and UV exposure.

• Make-Up Air Synchronization: To prevent the building from becoming a "vacuum," we interlock roof extractors with low-level motorized louvers. This ensures that for every m3/s of smoke exhausted, fresh air enters to keep exit doors easy to open.

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Performance & Compliance Standards

Feature	Powered Extractors	Natural Vents (NSHEV)
Activation	Smoke Detector / Fire Panel	Fusible Link / Fire Panel
Extraction Rate	Constant (Controlled by VFD)	Variable (Buoyancy-based)
Maintenance	Motor & Bearing lubrication	Link & Actuator testing
BOMBA Req.	10 ACH (Smoke Spill)	Calculated Free Area

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Why Choose EKG M&E Sdn Bhd?

• HVAC & Clean Air Specialist: We perform Static Pressure Calculations and Fan Curve Analysis to ensure your roof fans can overcome the resistance of fire-rated dampers and ducting.

• Testing & Commissioning (T&C): We conduct Hot Smoke Visualization Tests to prove to building owners and authorities that the extraction path is 100% effective.

• Klang Valley Strategic Support: Based in Kuala Lumpur, we provide on-site audits, replacement of fusible links, and annual safety certifications for roof extraction systems across the Klang Valley.