CSI Crime Lab

Posted by on 20 July 2015


Odor From Decomposing Bodies Permeated The Miami Valley Autopsy Lab And Its
Adjacent Offices – Aeroseal Saved The Day For Engineers…And Other Occupants


When decomposed bodies are found in Ohio’s Montgomery County, they wind up at the Miami Valley
Regional Crime Lab for autopsy. And for years, occupants of the three-story facility knew whenever a
new body arrived because the strong smell of the rotting corpses would permeate the building. Despite
spending hundreds of thousands of dollars over a period of years trying to solve the problem, nothing
seemed to work. Replacing the HVAC system didn’t work. Nor did installing high-efficiency fans,
adding an exhaust system incinerator, insulating the walls or any other strategy used so far.

Finally, the third engineer entrusted with solving the dire problem saw an episode of PBS’s “Ask This
Old House” that included a feature on aeroseal technology, a duct sealing process that seals leaks from
the inside of the ductwork. He believed he might have finally found an answer to the problem.


Once hired, it took the aeroseal experts at Service Tech Corporation just two days to completely
seal the supply and exhaust ductwork using aeroseal. Temporary access holes were cut into the
ducts, and the aerosol-based sealant was blown into the ducts’ interior.

The microscopic particles of sealant do not coat the walls of the ductwork but instead, stay
suspended in air until they come across a leak. At this point, they accumulate around the edges
of the leak and then to other sealant particles until the entire hole is sealed.

The final report generated by the computer-controlled aeroseal system showed a 98% reduction
in leakage. More importantly, the facility director – and the building’s other occupants –
declared the problem 100% solved!


“I knew we had leaks in the ventilation system that allowed the spread of odor throughout
the entire building, but there was no way we could access and seal the ductwork without
completely tearing down the entire structure. Over several years, we spent well over a
hundred thousand dollars in new equipment and outside consultants trying to solve the
problem, but nothing worked. Then we tried aerosealing, and the problem was solved.”

“I wish all of our projects went this fast and smooth. The aeroseal team was in and out in
just a couple of days. The fact is, any ductwork that has been installed a while ago has
leakage issues. I’m looking at using aerosealing the ductwork throughout many of our
Bill Epperson, Associate Engineer
Montgomery County Government

“Aerosealing the ductwork not only solved our critical ventilation issue, but it allowed us
to lower fan speeds while increasing HVAC efficiency. There is no doubt that the duct
sealing process had a significant impact on reducing energy usage and saving the county
Jeff Hatton, Energy Management
Montgomery County Government