Ductwork insulation

[remp]

I came across ductwork insulation a few years ago that was glued to the duct (I think) and was foil faced but was made of a armaflex type material. It was very durable. Does anybody know what type this might have been? Im using ordinary rockwool foil faced insulation in a traficable ceiling space and it is in tatters....

Regards
Billyq

 

[quark]

Closed cell neoprene insulation comes (also)with foil on one side but the thickness of the insulation increases, for same duct and ambient conditions, if you go with a foil faced one. They say, this is to avoid condensation on foil face. I had been speaking to Armaflex to give some calculation back up for one year and I just got one. I didn't yet check it.

PS: This is something to do with emissivity of aluminium.

Regards,

 

[imok2]

You may find what your looking for here:

http://www.armaflex.com/

http://www/armacell/ACwwwAttach.nsf/ansFiles/999-028-NA(NA).pdf/$File/999-028-NA(NA).pdf

 

[quark]

BTW, are you speaking about closed cell phenolic panel ducting? The material itself is ducting and insulation.

http://www.koolduct.com/

 

[HVAC68]

Also known as pre-insulated ducting. Saves lot of installation time, is very light as compared to conventional GI ducting + insulation.

These come in panels and are to be formed into ducts using manuacturer-supplied tools and tackles. PAL, Italy are the pioneers in this field. Maybe there are others too.

HVAC68