Is duct board still used?
Basically, the fiberglass absorbs moisture and provides a breeding ground for mold spores. Therefore, duct board should only be used where it will not be exposed to damp conditions. Both systems have been used for years and, when installed appropriately, will give good service.
What is AC 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.
Can I use foam board for ductwork?
You can build ducts from rigid foam board to serve as the distribution system to circulate heated or cooled air in your house. As with all duct systems, it is essential that one built from rigid foam board is correctly designed so that the temperature is comfortable and consistent throughout the residence.
What are the most popular thickness for duct board?
Duct board is a pressed fiberglass sheet with a binder that is commonly used in heating and cooling systems. The sheets are typically available in three thicknesses (1″, 1.5″, or 2″) with R-values of either 4, 6, or 8 and the sheets have dimensions of 4′ x 8′, 4′ x 10′, or 8′ x 10′.
What is the R value of duct board?
The 1-inch fibrous glass duct board has an R-value at 75°F of 4.3 h•ft2•°F/Btu. The 1½-inch board has an R-value of 6.5.
What does duct board do?
Duct board is a pressed fiberglass sheet with a binder that is commonly used in heating and cooling systems. These sheets are cut and formed into squares that are connected and provide a path for airflow in the heating and cooling system.
How thick is R6 Ductboard?
1.5″
Duct board – 4 foot X 10 foot sheet – R4 (1″) / R6 (1.5″) / R8 (2″)
What is the R-value of 2 inch duct board?
8.7
Thermal Performance Thermal resistance (R-value) of 2″ fibrous glass duct board is 8.7, which enables it to comply with energy codes requiring duct system R-values of at least 8.0.