Aerosolized sealant for inaccessible ducts

Aerosolized Sealant for Inaccessible Ducts

In the 2026 Malaysian M&E landscape, Aerosolized Sealant technology (commonly known by the trade name Aeroseal) has become the standard for addressing leakage in inaccessible duct networks. In older Grade-A offices in Kuala Lumpur or high-rise complexes in Selangor, manual sealing is often impossible without significant structural demolition.

Under the Energy Efficiency and Conservation Act (EECA) 2024, these "hidden leaks" are now a major liability, as they artificially inflate your Building Energy Index (BEI). Aerosolized sealing allows for a "non-invasive" repair that seals the entire system from the inside out.

The Challenge of Inaccessible Leaks

Standard ductwork is often buried behind fixed plaster ceilings, within narrow mechanical shafts, or obscured by other services like fire sprinklers and cable trays.

• The Energy Drain: Leaks in these areas can account for 20% to 30% of your total cooling loss. This "lost air" never reaches the occupant but forces your chillers to work harder, increasing your monthly TNB "Maximum Demand" charges.

• The Health Risk: Inaccessible return ducts can suck in dust and humidity from contaminated ceiling voids, leading to a failure in DOSH ICOP IAQ 2026 audits.

How Aerosolized Sealing Works

The process is a computerized "injection" that targets leaks based on air pressure rather than visual sight.

1. System Pressurization

The duct network is isolated, and all terminal diffusers/grilles are temporarily blocked. A specialized machine pressurizes the ductwork to identify the total leakage rate ($L/s$).

2. Mist Injection & Bridge Building

A non-toxic, vinyl acetate polymer is aerosolized into a fine mist (suspended particles) and injected into the pressurized air stream.

• The Physics of Sealing: As the mist is forced through a leak site, the particles collide with the edges of the hole. They bond together to "bridge" the gap, effectively building a permanent, flexible seal from the inside out.

• Gap Capacity: The technology can seal holes up to 15mm in diameter, which covers the vast majority of joint failures and small punctures in inaccessible areas.

Critical Operational & Compliance Benefits

As your M&E partner, EKG M&E Sdn Bhd ensures your aerosol sealing service provides measurable value:

• EECA 2024 Audit Readiness:

  The Energy Commission (ST) now requires an Energy Intensity Label. Aerosol sealing is the fastest way to reduce the "unaccounted-for" energy loss in your BEI. We provide the "Before and After" digital certificate required for mandatory annual reporting.

• Zero Demolition (Non-Invasive):

  Because the sealant is delivered through the air path, there is no need to break down plaster ceilings or disrupt office operations. The entire process for a typical office floor can often be completed within a single weekend.

• Airtightness Class 6 (ATC 6):

  This process is the only reliable way to guarantee that an existing, inaccessible system meets the ATC 6 standard (less than 1% air loss).

Performance Comparison: Manual vs. Aerosolized Sealing

Why Choose EKG M&E Sdn Bhd?

• Total 3D BIM Coordination: For retrofit projects, we use your existing 3D models (or create new ones) to map the aerosol delivery path, ensuring the mist reaches even the furthest corners of your duct network.

• Certified Digital Reporting: Every project concludes with a Certificate of Airtightness, providing the verifiable $L/s$ reduction data needed for your Registered Energy Manager (REM).

• Regional Support: Based in Kuala Lumpur, we provide professional aerosol sealing for corporate headquarters, hospitals, and high-occupancy retail malls across the Klang Valley.

Is your energy budget leaking into spaces you can't see? Contact EKG M&E Sdn Bhd today for a professional aerosolized sealant audit and secure the efficiency of your inaccessible ductwork.