Asbestos Air Conditioning Ducts

Since the early 1970 s a significant increase in the use of flexible duct which generally is internally lined with plastic or some other type of material has occurred.

Asbestos air conditioning ducts.

It adheres to the sheet metal and acts as a thermal insulator. Metal ducts wrapped with asbestos materials. This may occur for many years until it may be found due to significant disturbance by hvac or air conditioning tradesman through upgrades and refurbishments. This article shows how to recognize asbestos materials in heating and air conditioning ducts vibration dampers chimneys and flues and air handlers or blower compartments and it identifies potential asbestos fiber release or carbon monoxide hazards in buildings where certain asbestos and cement asbestos transite pipe materials are used for.

As a chalky plaster similar in appearance and texture to that of a cast for a broken arm. As a paper like sheath usually containing 20 60 percent asbestos fibers. Friable asbestos insulation on air conditioning ducts often comes in four different forms. One of the dangers is that it degrades over time and this disturbs the material dislodging asbestos fibers into the air.

Asbestos abatements include documentation of removal air sampling transport and disposal. However many modern residential air duct systems are constructed of fiber glass duct board or sheet metal ducts that are lined on the inside with fiber glass duct liner. Once inhaled asbestos has the potential to cause serious consequences such as asbestosis of the. From the mid 1950s through the early 70s sheet metal air ducts for forced air heating systems were commonly insulated with a cardboard like material that contained asbestos fibers.

But did you know that asbestos containing tapes and wraps were often placed directly inside of the heating vents in older homes. The first thing to check is if the duct composed of asbestos materials or just insulated with asbestos materials. Asbestos duct wrap is a material that resembles white paper. Hiring a licensed ahera building inspector to check your heating vents for asbestos.

If the air stream in these type of ducts isn t exposed to the asbestos material and there is little chance of exposure or contamination then many contractors will be comfortable. Asbestos rope inside heater bank.