Attenuating noise carried through ductwork is a vital function of a duct liner insulation material to help create productive living, work and learning environments. Specifically designed as an interior insulation material for sheet metal ducts used in heating, ventilating and air conditioning.
What is duct liner used for?
Fiberglass internal duct liner is commonly used in many commercial heating, ventilation, and air conditioning (HVAC) system. Fiberglass duct liner provides sound attenuation by dampening noise from HVAC equipment, and sound from adjacent office spaces.
What is meant by duct lining?
A fiberglass blanket material used as a lining inside a sheet-metal duct of an air-conditioning system; reduces noise which is transmitted along the duct and provides thermal insulation.
Are fiberglass ducts safe?
Fiberglass. When ducts are damaged or deteriorating, they can introduced particles of fiberglass into the air you breath. According to the American Lung Association– Inhaling fiberglass can reduce lung function and cause skin eye and throat irritation, in humans and animals.
Is duct liner flammable?
Duct Liner Adhesives Adhesives are classified according to their flammability in both wet and dry states.
How does duct silencer work?
These are specially designed for the purpose of stifling and insulating sound which is created by air duct equipment such as fans and AHUs. They act as a sound dampener, reducing vibrations and sounds through the production of expansion joints and compensators which absorb sound.
What causes noisy ducts?
The most common reasons to hear noise in your HVAC ducts include: Air Pressure: A buildup of pressure can cause rumbling sounds. Dirty Air Filter: If your air filters become dirty and clogged, it can affect the movement of air and cause noise. HVAC filters should be cleaned or replaced on a regular basis.
Is duct board safe to use?
Environmental Protection Agency (EPA) has classified it as an animal carcinogen. Numerous IAQ case studies have shown that fiberglass duct liner, combined with dust, dirt and moisture, is a very good medium for microbial growth (examples: mold, fungus, Legionella bacteria).
