Quote:
Originally Posted by turtles02675
Met up with a guy in the pool yesterday. Said he was a retired sheet metal worker. Saw them building Patio Villas using FIBERGLASS to fabricate the heating/cooling ducts. Said this was NOT a good material for this purpose. Constant air movement eats off the epoxy coating, subsequent air flow knocks off small glass fibers. These are not only dirty but very bad for people's lungs.
Google "Fiberglas hearing ducts" and see what you get.
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Since he's retired from sheet metal work, maybe he's not familiar with newer technology synthetic materials possibly being used?
This seems like something the building codes and inspectors would cover.
Here's a newer product…..
KoolDuct is a pre-insulated, high performance air duct system for interior and exterior commercial, industrial and residential HVAC applications. KoolDuct is constructed from foil faced, CFC/HCFC-free, phenolic foam board that provides a minimum of an R-6 Thermal rating.
Kingspan KoolDuct offers significant advantages over sheet metal ductwork. Weight, space, installation time, installed costs, air leakage and energy performances are just a few.
http://www.ptmmanufacturing.com/kool...ase_study.html