Fiberglass Duct Board Problems

Mold may grow at extensive or problematic levels in some building insulation materials used in walls, floors, ceilings as well as in HVAC air duct systems.

What is a common mistake in ductwork installation?

Common HVAC Installation Mistakes and How to Avoid Them

• Picking the Wrong HVAC System. It is the most common mistake made by first-time HVAC buyers.
• Wrong Thermostat Placement. ...
• Inadequate Ductwork Sealing. ...
• Wrong Vent Placement and Installation. ...
• Inadequate Condenser Clearance.

How do you seal a duct board?

You just do it right on the inside. As you can see you know right inside the duct board same thing

Which ductwork is best?

Though there are different types of ductwork available in the market today, Sheet metal is most recommended as this type of air duct is non-porous in nature and thus does not allow mold or bacteria to breed in the air ducts. Sheet metal ductwork also helps you prevent potential health risks of fiberglass air ducts.

Is fiberglass duct board safe?

Health effects from exposure to fiberglass can be different depending on the fiber size and type of exposure. Fiberglass, at a minimum, is an acute physical irritant to the skin, eyes, and upper respiratory tract. While no long-term health effects should occur from touching fiberglass.

Should fiberglass ducts be replaced?

The problem with old fiberboard duct is that the fiberglass particles come loose and circulate through the house. These particles are inhaled by people in the home (or office), which is hazardous to everyone's health. When this occurs, the ductwork should either be replaced or reinsulated with safer material.

What causes the most leaks in ductwork?

Leaks in your ductwork may develop due to normal wear and tear. Over time, the ductwork segments that fit together (particularly at elbows and joints) can become loose or may even detach entirely. The caulk or other sealing materials may also begin to crack with age, which can cause leaks.

What is the good rule of thumb in sizing ductwork?

One of the most used methods is the HVAC duct sizing rule of thumb. In fact, even professional AC contractors might use this method to size the AC ducts in your home. According to this rule, you need to install an air conditioner of one-tonne capacity for every 500 square feet of the floor area of your residence.

What can go wrong with ductwork?

Ducts that are not properly insulated can lose heated air in the winter and cooled air in the summer. Dirty air ducts. Is the air quality inside your home worse than the air outside? Dirty air ducts can distribute dust, pollen, dirt, germs, mold, mildew and more throughout your home.

How long does fiberglass duct board last?

Ducts are designed to last for about 10-15 years on average. They are made from a combination of materials such as fiberglass and plastic. At some point, these ducts will get damaged. The sooner you see signs of damage and do something about it, the better.

How long will duct board last?

“If your ductwork is over 15 years old, you probably should replace it. Ductwork has a maximum lifespan of 20-25 years. By 15 years, however, it begins to deteriorate, significantly reducing your HVAC system's efficiency, so replacement is the prudent option.”

Is duct board safe to use?

GLASS DUCT CONSTRUCTION Testing using UL test proce- dures, however, has proven that fibrous glass duct board is a safe and durable duct fabrication material. Discussed below are issues specific to fibrous glass duct construction, as well as testing results and industry research that address these concerns.

Is it better to undersize or oversize ductwork?

Oversized Ducts Larger than normal ducts are certainly capable of handling more airflow. But your HVAC system may not be equipped to pump that much air. In fact, your system needs a specific air pressure in the ductwork to properly distribute air.

What are the three types of ducts?

There are three main types of ducting used within domestic ventilation systems: rigid ducting, semi-rigid ducting and flexible ducting.

What are the most popular thickness for duct board?

A duct board is a common form of heating and air conditioning insulation made out of fiberglass and a thin layer of foil. Each board typically is 1 to 2 inches (2.54 to 5.08 cm) thick, and several boards can be assembled together to help airflow and maintain temperature.

Does fiberglass hurt your lungs?

No long-term health effects should occur from touching fiberglass. Eyes may become red and irritated after exposure to fiberglass. Soreness in the nose and throat can result when fibers are inhaled. Asthma and bronchitis can be aggravated by exposure to fiberglass.

Can fiberglass damage lungs?

Eyes may become red and irritated after exposure to fiberglass. Soreness in the nose and throat can result when fibers are inhaled. Asthma and bronchitis can be aggravated by exposure to fiberglass. Temporary stomach irritation may occur if fibers are swallowed.

Is fiberglass toxic to breathe?

Fiberglass that makes it to your lungs may remain in your lungs and thoracic region. While low levels of exposure will result in irritation, inhaling high levels of airborne fiberglass can cause bronchitis-like conditions.

Can fiberglass duct board be cleaned?

Cleaning and Restoring Fiberglass Duct Boards Fortunately, these systems can now be restored through professional air duct cleaning. Fiberglass-lined or not, preventative maintenance and cleaning are always recommended for all ductwork.

How do you know if ductwork is bad?

Steadily climbing energy bills indicate that there is a leak or a block in your ductwork. In either case, you should call a professional and consider the possibility of replacing your ductwork. Poor temperature control within the rooms of your home, as well as hard-to-breath air, are both indications of dirty ductwork.