I want to replace a length of flex duct in my closet with rigid oval pipe, should it be insulated?
A contractor installed a length of flex from the air handler down to my 1 st floor with 8" insulated flex pipe. but he ran it right through a closet and we have lost space. my wife has been complaining and I figured i could replace it with rigid oval pipe and run it into the wall by removing the sheetrock setting the pipe in place and conecting each side to the existing flex and gain our closet back... Should the rigid pipe be insulated? if so, is bubble wrap insulation OK? or do I need the fiberglas insulation?