Insulating your air ducts is an important part of maintaining a comfortable and efficient home. Because air ducts are made of thin material such as fiberglass or sheets of metal, they are more likely to leak at the joints. Insulating the air ducts at the joints can seal them and prevent leaks. HVAC ducts are usually insulated with fiberglass, but there are other materials available as well.
As a rule, flexible, tube-shaped ducts usually have fiberglass covers. This type of insulation is coated with a shiny aluminum sheet that holds the fiberglass in place. They are particularly useful in attics and other tight spaces that cannot be easily accessed. Common types of duct insulation include fiberglass, aluminum foil, rock wool, and XLPE. Heating, ventilation, and air conditioning system contractors recommend that duct insulation have an R-value of at least 5, although the highest available R-value, 8, is preferable.
Keep in mind that, despite its name, adhesive tape should not be used to seal ducts; it could deteriorate and break down and become ineffective at sealing leaks, leaving sticky, useless dirt on the duct network itself. After covering those joints, the rest of the ducts can be insulated with fiberglass, rock wool, or XLPE, depending on the application. Especially if your air conditioning system is located in the attic, where hot summers or freezing winter temperatures can have an adverse effect on air conditioning ducts. All you need is thermal insulation, access to air conditioning ducts, duct adhesive, aluminum tape, or duct wrap. Ducts in unconditioned areas such as basements, floors, and roofs are where duct insulation is most needed. Ducts refer to the system of ducts and pipes through which hot or cold air circulates throughout the house.
Duct insulation ensures that the air circulating through the duct system is maintained at the desired temperature and does not escape. Air passing through ducts often has problems, especially in the attic where there is rarely air conditioning. Insulating your air ducts is essential for keeping your home comfortable and energy efficient. With the right materials and a bit of know-how you can easily insulate your air ducts yourself.
