Replacing/Resealing Ductwork need help.
House built 1960, Charleston, SC - hot and humid
Brick ranch, 2300 sq/ft on crawlspace
Current ductwork is metal and located in crawlspace (not conditioned).
Replaced HVAC Unit 3 years ago - Carrier, 2 stage, 2 ton, located outside - does both heating and cooling.
Have 1 25x20 return.
I have hardwood floors throughout the house and no insulation underneath.
My termite guy was over doing an inspection and said I have problems with my HVAC. There is water beading up on the bottom of the floor boards above the main "trunk?" duct that runs down under the house. Why is this happening ? Also said the insulation is saturated with water.
Most of the other ducts are dripping and my mosture readings were really high.
Question is do I keep my metal ductwork and reseal it or do a complete rip-out and install another product? There is room to move around fairly well under there.
I have read about sealing existing ductwork with mastic...I have called the company that installed my HVAC unit...I think they are reputable. I just want some opinions on what my next steps should be.
Thanks for your time... Ron
I don't think I am getting the right encapsulation install...Pls. Help...
Hi there - finally got around to getting an encapsulation done. They laid out the 10 mil vapor barrier throughout the crawl space. They ran it up the wall about 6" from the sill (?), folded it over and used a ramset to secure. The problem is two fold: they didn't seal the plastic to the brick. The piers run pretty close to the walls (3" or so) so here they just ran the plastic up the same 6" from the sill and secured - BUT I can put my hand down behind the pier and feel dirt (!) So the space is not really sealed - not sealed along the wall and not sealed behind piers. Question is, is this right? Should this be like an air-tight seal. Yes they are going to install a 90 pint dehumidifyer as well. What is the right way to do this in Charleston, SC?
Originally Posted by holyrail