Greetings to everyone,
I have been doing some research on environmentally friendly ductwork
installations and have seen many arguments against using uncoated duct
board. The disadvantages range from a breeding ground for dust mites
and mold to inhalation of micro fiber particles and formaldehyde.
As I have a newborn in my household and my duct board boxes and lined
flex hose are all black on the inside, I am looking to replace the
entire ductwork system. My ductwork is in the attic and will primarily
be used for cooling a small 1300 sq/ft Florida home.
The entire current system is all lined flex hose connected with
triangular duct board junction boxes and terminated with duct board
1. What are my options for replacing the junctions, plenum, and
register boots with non fibrous duct board material?
2. If it's sheet metal, is there a way to insulate them just on the
outside up to R6?
3. My longest current flex hose run is about 11 feet. Is it possible
to design a system using only flex hose that is properly sized?
Plenum =======|Triangle Junction|
5Ft.|| |============|Boot 2|
|| 11 Ft.
Thank you in advance for any suggestions,