Testing for Lower Leaks
Flex Duct Testing Overview
Rooms often fail the door fan test due to excessive ceiling leaks when it is known that the room would pass a discharge test. Reason: the first door fan test (often called the whole room test because only the total... read more
Measuring Lower Leaks with Plastic on the Ceiling
According to the NFPA 2001 Standard on Clean Agent Fire Extinguishing Systems 2004 Edition two methods of performing a lower leaks test are accepeted. In addition to the flex duct test Appendix C makes specific reference to the "plastic on... read more
