Dryer exhaust ducts should be independent of all other systems.
They shall convey the moisture to the outdoors and shall terminate on the outside of the home in accordance with the manufacturer's installation instructions and
They shall be equipped with a back-draft damper.
Screens shall not be installed at the termination of the duct because screens and screws can trap lint.
Exhaust ducts shall be constructed rigid metal ducts having smooth interior surfaces with joints running in the direction of the air flow and not be connected with sheet-metal screws or any means which extend into the duct.
The maximum length of an exhaust duct is 25 ft. minus 2.5 ft per each 45° bend.
Flexible connectors from dryer to ductwork must be metal and <8 ft.

Mike Schulz
Lic. 393
Office/Fax: (919) 557-3889
Cell: (919) 614-0208
www.houseinspections.com
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We are inspectors, investigators very similar to the police investigator. The police inspector is there to uncover the truth, not to be fair to anyone. The judge and jury are the ones that are charged with being fair, not the investigators. Following this analogy, the buyer and seller will decide what is fair, we just provide the information.