Internally lined ducts should have sealed edges when installed for several important reasons:

Why Internally Lined Ducts Should Have Sealed Edges

1. Prevent Fiber Erosion and Air Contamination:

The internal lining of ducts is often made from materials like fiberglass, which can erode over time if the edges are not properly sealed. As air flows through the duct, it can pick up small particles from the exposed insulation and distribute them throughout the building. Sealing the edges helps prevent fibers or particles from entering the airflow, improving indoor air quality and reducing health risks associated with inhaling these particles.

2. Energy Efficiency:

Unsealed edges in internally lined ducts can cause air leaks, which reduce the efficiency of the HVAC system. Sealing the edges ensures that air moves through the system as intended, without escaping into the surrounding space. This not only improves the system’s overall performance but also helps reduce energy costs by preventing the loss of conditioned air.

3. Moisture Protection and Mold Prevention:

Internally lined ducts are often made from porous materials that can absorb moisture. If the edges are left unsealed, moisture can penetrate the insulation, leading to mold growth. Mold can spread throughout the ductwork, compromising air quality and posing health risks. Properly sealed edges prevent moisture from entering the lining, thus helping to avoid mold issues.

4. Noise Control:

Lined ducts are often used to reduce noise from the HVAC system. However, if the edges of the lining are not sealed, sound can escape or cause vibrations, reducing the noise-dampening benefits of the lining. Sealing the edges helps maintain the sound insulation properties of the ductwork, ensuring a quieter environment.

5. Durability and Longevity:

Properly sealing the edges of the duct lining prevents the material from fraying or becoming damaged over time due to airflow or environmental factors. This extends the lifespan of the duct insulation, reducing the need for repairs or replacements and ensuring the HVAC system operates efficiently for a longer period.

6. Compliance with Building Codes:

Many building codes and HVAC industry standards require the edges of internally lined ducts to be sealed to meet air quality, safety, and efficiency regulations. Non-compliance can lead to issues with building inspections and the need for costly repairs or modifications later on.

Conclusion

Sealing the edges of internally lined ducts is essential to ensure good indoor air quality, energy efficiency, moisture protection, noise control, and the long-term durability of the ductwork. Properly sealed edges help prevent fiber erosion, air leaks, and the potential for mold, making it a critical step in HVAC installation. Get started with Advanced Air Duct Cleaning today.