Black Spots Flexible Ducts Attic

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords.

Black spots flexible ducts attic. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. You may have black mold in your air ducts if you notice any of the following signs. The sun would come out melt some ice and it would find it s way to the nearest hole into the house. If you notice black dust around your air vents this could be a sign of black mold growing within.

When ductwork is touching it forms a very cold spot where they are touching thus condensation begins. Your home s ductwork is located in unconditioned spaces like attics and behind walls where all kinds of dust and dirty insulation abounds. Clean out your ductwork if it s confirmed that you have mold growing inside. The last usual cause for condensation on a duct system is if the ducts are not properly hung or they are touching each other.

Most of the time dirt accumulates on ceilings because air is leaking in from the attic between the drywall and the supply register. If the register is closed the air is forced along the ceiling and the next thing you know you ll start to see black buildup across your ceiling. Ductwork located in an attic must be hung properly so that the insulation can do its job. Black mold has a distinctive unpleasant musty smell.

Confirm that the black particles are actually mold spores through a lab test. Use metal flex or fiber board ducts that are insulated to. Dark dust is blowing into your home. The black dust may be patchy and difficult to wipe off.