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A Prescription for Structural Pasteurization
More medical professionals are prescribing structural pasteurization as a proactive health solution.
It turns out that the structures in which we live, work and play in can make us very sick.
Lurking in the walls, attics, crawlspaces, and subflooring—under sinks, toilets, showers, and other unseen areas—is moisture damage. Rain, plumbing leaks, sewage spills, and even humidity can cause unseen growth of mold, fungi, bacteria, and viruses. Other dangers can lurk within a structure including chemical odors, tiny dust mites, insects and rodents that may spread disease.
These unseen dangers can lead to a serious case of “building-related illness” leaving occupants feeling ill or exhibiting a variety of symptoms without knowing why. While it’s possible to test for many of these threats, it can be hard to reach and remove them in the walls, cracks, corners, and crawlspaces where they live. Tests are expensive and can add up quickly. Particularly if the potential cause of illness is unknown and multiple tests are performed in search of an answer.
As a result, medical professionals today are recommending, and even prescribing, structural pasteurization as a proactive health solution. Especially for those with severe asthma, allergies, compromised immune systems, and other serious conditions.
Structural Pasteurization
Structural pasteurization is an application of the principles Louis Pasteur used to reduce food spoilage – most famously milk – in the mid-1800s, but used in buildings.
It is a process in which high temperatures - up to 160 ºF - are introduced for several hours to a structure, or part of one, to reduce organisms to acceptable levels without damage to the structure. As Pasteur found out, certain temperatures kill a variety of harmful bacteria in food. Heat applied to a building is just as effective in destroying active mold growth, bacteria, viruses, protozoa, insects, and other heat-sensitive pests and organisms. Formaldehyde, VOCs, and second-hand smoke can also be addressed with heat.
“Structural pasteurization may provide doctors with a tool to treat the source of the problem.” says Chris Landon, MD, a pediatric pulmonary specialist and graduate of Stanford Medical School, who practices in Southern California. Dr. Landon has prescribed structural pasteurization as a health solution for those with severe asthma or other serious respiratory conditions.
“Structural pasteurization kills dust mites, insect, feces, and dead insect body parts to reduce the allergic response,” explains Dr. Landon. “It will also kill mold, fungi and bacteria and dry out the structure, making it difficult for them to grow back.” In one case, he had good results for a 3-year old boy who was allergic to mold in his home and previously hospitalized for asthma. “Reducing asthma and allergy triggers in a home can reduce the patient’s reliance on inhaled corticosteroids. These can have negative effects when used long term,” says Dr. Landon.
The Role of Filtration
Structural pasteurization is not just a matter of applying heat to a structure. HEPA filtration plays an important role in the treatment process. It eliminates airborne contaminants that already exist, or that are stirred up during the heat process. The combination of heat with HEPA filtration – known as ThermaPureHeat® – was co-invented and commercialized by David Hedman, a Stanford educated inventor. It is delivered by licensed contractors throughout the United States and Canada.
In the ThermaPureHeat process, technicians use heaters, fans and air scrubbers to move superheated air into the affected space, raising the temperature of a single room, or entire structure, to as much as 160 ºF for several hours. The special HEPA air scrubbers are designed to capture airborne particles, such as mold spores and insect parts found in household dust. These could aggravate respiratory conditions in sensitive individuals. The heat also accelerates the off-gassing of odors, VOCs and toxins even in hard-to-reach areas.
Dead mold in a wall cavity doesn’t necessarily need to be removed as long as it’s not part of the occupied space. In instances of mild to moderate water leaks of short duration, wall removal may be unnecessary except when you can see the mold or when the structure is compromised. That’s where heat treatments like ThermaPureHeat can be effective for managing mold in place. It penetrates cracks, crevices and other inaccessible areas like wall cavities at a fraction of the cost of removal and replacement.
The Day After
Betsy Dysart’s kitchen sink had a slow leak. It led to standing water in a crawl space under her home and she didn’t know how long it had been going on. Her 8-year daughter with epilepsy began having “nearly continuous seizures”. Betty homeschools her two daughters in Ottawa, Kansas, has a strong sensitivity to mold and suspected it as the culprit.
“She was having over 100 seizures a day, and we couldn’t identify what was causing them,” said Dysart. “My other daughter and I were also having terrible asthmatic attacks.” A plumber stopped the kitchen sink leak, but could not address the problem under her home from which an “awful smell” arose. Traditional cleaning in the crawl space wasn’t possible because it was too small. Barry Banzet, President of Ottawa-Kan.-based B&B Professional Cleaning and Restoration was brought in to structurally pasteurize the site using the ThermaPureHeat process.
“After structural pasteurization, my youngest daughter’s epileptic seizures stopped,” said Dysart. “The severe asthmatic attacks my oldest daughter and I suffered were gone too. ThermaPureHeat was able to end the bad episodes we were having.”
In another example of the value of structural pasteurization, a woman faced continued respiratory problems and worsening fatigue over a period of five years. She was in a wheelchair. A team of doctors conducted a variety of tests, but were unable to determine the cause for some time. Eventually, one of the members of the medical team asked if she had any pets. In addition to a dog and cat, the couple mentioned they had two pet cockatiels. Air samples indicated the presence of high bacteria levels that could be associated with bird disease. The medical recommendation included the removal of the birds and a thorough janitorial cleaning by a professional service of the entire home.
The couple contacted a local company serving the Monterey Peninsula called Certified Disaster Cleaning & Mitigation, Inc., to conduct a professional cleaning. When applicator John Martin assessed the situation, he instead recommended structural pasteurization because it could reach into places “the human hand can’t reach.”
After treatment, several samples were taken where the birds were kept and showed the bacteria was reduced from very high levels to non-detectable.
According to the woman’s husband, three days after the structural pasteurization was done, his wife was able to get out of her wheelchair and felt better for the first time in months. Later, as her strength returned, she regained the ability to walk and move around. Martin has since spoken to the woman’s husband who feels that the only thing they can attribute her progress to is structural pasteurization. They are very grateful.
While the growth of unseen dangers can be out of reach of our hands in walls, cracks, corners, and crawlspaces, they aren’t out of reach of structural pasteurization.
More medical professionals are prescribing structural pasteurization as a proactive health solution, particularly for those with respiratory conditions or compromised immune systems. Maybe our days of suffering from “building-related illness” are numbered.









