Heavy Rains and Hurricanes Clear a Path for Supercharged Mold

Anyone east of the Rockies will tell you this has been a wet year. It wasn’t just that Hurricanes Florence and Michael soaked parts of the South. It wasn’t just that this year’s drenching storms were numerous and tracked unusually far north (one, Alberto, made a historic appearance all the way up in Michigan).

It was also that the rest of the Eastern Seaboard just simply got wetter. In Wilmington, N.C., 60 inches of rain broke an annual record set in 1966. Around Scranton, Pa., rainfall broke a 1945 record. Wisconsin, Colorado and Maryland all saw 1-in-1,000-year rainfall events. And dozens of locations, like Baltimore, Pittsburgh and Charleston, W.Va., had their second- or third-wettest summers on record.

And with the rain comes mold.

In some houses, mold spores are nothing more than a nuisance—staining furniture or making the basement smell funny. But in other homes they can put people in the hospital or even kill them. Many molds are associated with allergy or asthma attacks; some have been linked to serious complications in immune-compromised populations, and cancer. It is hard to say just yet how much the latest wet year has affected people’s respiratory systems, but it is certainly already hitting their pocketbooks.

“This year there’s just a lot of mold tests being done,” says Michael Berg, the laboratory director for EMLab P&K, one of the biggest U.S. mold-testing companies. He says staffing has become a challenge after two hurricanes and relentless storms along the Eastern Seaboard: “We are struggling, as far as having enough hands on deck in a year like this.”

As climate change and CO2 emissions continue to shape life on Earth, we may be seeing a lot more flooding—with higher sea levels and more powerful storms. In some ways this year might be a glimpse into a wet and moldy future. But what will that mean in practical terms?

Modelling the effects of climate change and rising CO2 levels is notoriously difficult, and even more so when it comes to the diverse world of fungi. It is a little like asking, “How will climate change affect animals?”—some may benefit while others suffer. In some cases the heat will make for fertile breeding grounds for fungi. In others the additional CO2 might irritate them, thereby prompting them to release more spores. “It’s a stress response. The fungus wants to survive, and the way it tries to survive is to produce more offspring—and that means more spores,” says Naresh Magan, a mycologist at England’s Cranfield University. Aspergillus fumigatus, a member of what is perhaps the most common genus of mold to irritate humans, seems to release far more spores when scientists raise it in warmer, CO2-rich enclosures. Other researchers have suggested that increased CO2 might create more leaf litter—where a lot of mold grows when it is not in your house—adding much-needed nitrogen for fungi.

And the spores they produce might be more harmful. In addition to the number of spores a mold puts out, evidence suggests higher CO2 might change the spores themselves. Some mold spores are more than eight times more allergenic today than in pre-industrial times (though it is not clear this trend will be maintained as CO2 levels continue to rise).

Scientists are not completely certain as to how this works. Unlike plants—which breathe in CO2 and can benefit from its increase—fungi take in oxygen, so changes in the chemistry of their spores may be due to some kind of secondary effect. Experts have suggested that more CO2 can lead to more acidic soil or indirectly change fungi respiration. Or there might be some unknown mechanism that causes different responses in different molds. Whatever that mechanism might be, higher CO2 somehow triggers the more allergenic proteins in many molds—which may be why so many more people are allergic to mold today than in generations past.

But not all fungi react the same way to environmental changes. Experiments suggest Alternaria—a genus of mold that causes respiratory problems and is often found in spoiled crops and houses—may actually decrease the allergens in its spores in a warmer, higher-CO2 world. In many cases, it is not clear what chemicals cause adverse health effects from mold spores, let alone how they will respond to a changing climate and atmosphere.

Magan has exposed many types of mold to different levels of CO2, heat and moisture. He says molds such as Stachybotrys—a dangerous group often referred to as “black mold”—might become less allergenic as CO2 increases. But when Aspergillus species are put in a higher CO2 environment, they increase production of aflatoxin B1, a potent cancer-causing chemical that the mold can deposit on some types of produce and livestock feed.

Some of these effects will change, Magan says, as molds adapt and mutate. This might mean the molds will adjust to the stress of climate change—but it could also mean they will adjust to how we treat them. The human body is an excellent place for molds to grow, but most people’s bodies are able to fight them off (though we might start coughing or get runny noses in the process). But in people with compromised immune systems—after stem cell therapy or an organ transplant, for example—Aspergillus can be lethal. Studies have documented an increasing ability among such molds to resist medical treatments including triazole, the most potent anti-fungal in such cases, even in patients who have never taken the drug.

Another problem with mold today is that many energy-efficient homes are designed to capture and conserve heat—which means they can also trap moisture and prevent ventilation, Magan adds. Heat and moisture create a perfect environment for mold. In a bitter irony, architects battling the very things that encourage molds globally may be making them more comfortable in your basement.

But people living in modern, energy-efficient homes are not the ones likely to suffer most from the long-term effects of mold. As is often the case with climate change and rising CO2 levels, the repercussions will likely be worst among the poor, especially in underdeveloped economies where many people cannot purge moisture and mold from their houses.

“With asthma and chronic pulmonary disease, it’s a vicious cycle. [Patients] go and get medication and they feel a little bit better, but they come back into the same home environment,” says Maureen Lichtveld, a global health professor at Tulane University who works with marginalized communities in the Caribbean region as well as the U.S. Southeast.

Lichtveld studies many forms of disease that follow disaster and climate change, but she finds mold especially frustrating because it is highly preventable and relatively easy to control in the home. And if it is not removed, mold can exacerbate chronic asthma and other diseases and stunt a child’s learning and growth. In Puerto Rico asthma was already 23 percent higher than on the mainland—with twice as many asthma-related deaths—before Hurricanes Irma and Maria battered the island in 2017. Many reports suggest it has spiked since then, though objective numbers are not yet available.

In places such as South Florida, where seasonal flooding is common, the mold remediation business has become especially competitive, according to Berg. In other places hit by hurricanes or heavy rains, residents might be facing mold problems for the first time. But whether from flooding, increased spore output or changes in how it functions, mold is likely to become a bigger part of our lives.

Tips* for avoiding the effects of airborne mold spores:

  • Just because you can’t smell the musty odor of mold in the air doesn’t mean it is not there. But if you can, it’s a good sign you might have a problem.
  • As with other allergens, not everyone responds to mold spores in the same way. One person might sneeze or cough while another might become exhausted, and another will feel nothing at all.
  • Mold thrives in wet places with little ventilation. Be especially careful with showers, basements or wherever you hang your clothes to dry.
  • There are thousands of species of mold, and each species releases different concentrations of potentially harmful chemicals. Off-the-shelf mold detectors are generally not sophisticated enough to accurately measure dangerous molds. It is far better to hire a service to take samples and analyze them in a lab.
  • For people with asthma, mold spores become especially dangerous when combined with other allergens such as cockroaches or animal dander.
  • Whereas molds can become resistant to medicines, they cannot do so to household bleach—which is still the best way to get them off surfaces. White vinegar is another, less caustic, option.
  • One of the best ways to beat mold in the home is to keep humidity low (ideally below 50 percent, but at least below 80 percent). If you have a period of high humidity, keep an eye out for mold.
  • Mold is far more likely to grow on organic materials. Wicker, wood or straw on furniture are the most common.
  • Make sure rooms are well-ventilated. If the weather is dry, open a window and create a cross breeze. If not, switch on a fan or air conditioning.
  • Do not try to paint over mold. It will continue to grow and release spores underneath the paint. Always wear protective goggles and a mask when dealing with household mold.
  • Once you have removed the mold—washing with bleach, throwing out that old wicker chair, using an air filter—the mold should not come back. If it does, it is probably because moisture is continuing to seep in through the air or some kind of leak. Find the source of the moisture rather than endlessly fighting the mold.

Original Article Source:https://www.scientificamerican.com/article/heavy-rains-and-hurricanes-clear-a-path-for-supercharged-mold/

NIOSH Develops Tools to Help Identify and Assess Areas of Dampness and Mold

NIOSH has developed and released the Dampness and Mold Assessment Tool to help employers identify and assess areas of dampness in both general buildings and school buildings.

“Implementing regular visual inspections for dampness can help to identify trouble areas before they become major problems and help to prioritize maintenance and repair,” said David Weissman, M.D., director of NIOSH’s Respiratory Health Division. “The Dampness and Mold Assessment Tools provide an inexpensive mechanism to investigate, record, and compare conditions over time.”

Close-up Photo of Tree Bark

Nonindustrial buildings like offices and schools can develop moisture and dampness problems from roofs and window leaks, high indoor humidity, and flooding events, among other factors. Dampness can promote the growth of mold, bacteria, fungi, and insects. Workers and others in damp buildings can be exposed to airborne pollutants from biological contaminants and the breakdown of building materials.

According to NIOSH, research has shown that exposure to building dampness and mold are associated with a number of health problems, including:

  • Respiratory symptoms (such as in the nose, throat, or lungs)
  • Development or worsening of asthma
  • Hypersensitivity pneumonitis (a rare lung disease in which lungs become inflamed as an allergic reaction to inhaled bacteria, fungi, organic dusts, and chemicals)
  • Respiratory infections
  • Allergic rhinitis (often called “hay fever”)
  • Bronchitis
  • Eczema

The Dampness and Mold Assessment Tools provide a guide for users to assess all rooms for areas of dampness and mold and identifying the source(s) of the dampness and mold. The tools include a checklist and instructions for assessing and recording any damage found and for tracking conditions over time.

Workers who suspect their health problems are related to exposure to building-related dampness or mold should report new, persistent, or worsening symptoms to their personal doctor and to a designated individual at their workplace per their employer.

Article Source  https://ohsonline.com/articles/2018/12/18/niosh-develops-tools-to-help-identify-and-assess-areas-of-dampness-and-mold.aspx?m=1

Mold After A Disaster

Highlights

  • People with asthma, allergies, or other breathing conditions may be more sensitive to mold.
  • If you or your family members have health problems after exposure to mold, contact your doctor or other health care provider.
  • Controlling moisture in your home is the most critical factor for preventing mold growth.
  • If you plan to be inside the building for a while or you plan to clean up mold, you should buy N95 masks (or a respirator with a higher protection level) at your local home supply store and wear one while in the building. Make certain that you follow instructions on the package for fitting the mask tightly to your face. Even if you go back into the building for a short time and are not cleaning up mold, you need to wear an N95 mask.

After natural disasters such as hurricanes, tornadoes, and floods, excess moisture and standing water contribute to the growth of mold in homes and other buildings. When returning to a home that has been flooded, be aware that mold may be present and may be a health risk for your family.

People at Greatest Risk from Mold

  • People with asthma, allergies, or other breathing conditions may be more sensitive to mold.
  • People with immune suppression (such as people with HIV infection, cancer patients taking chemotherapy, and people who have received an organ transplant) are more susceptible to mold infections. People with a weakened immune system, especially people receiving treatment for cancer, people who have had an organ or stem cell transplant, and people taking medicines that suppress the immune system, should avoid cleaning up mold. Children should not take part in disaster cleanup work.

Possible Health Effects of Mold Exposure

People who are sensitive to mold may experience stuffy nose, irritated eyes, wheezing, or skin irritation. People allergic to mold may have difficulty in breathing and shortness of breath. People with weakened immune systems and with chronic lung diseases, such as obstructive lung disease, may develop mold infections in their lungs. If you or your family members have health problems after exposure to mold, contact your doctor or other health care provider.

Safely Preventing Mold Growth

Clean up and dry out the building quickly (within 24 to 48 hours). Open doors and windows. Use fans to dry out the building. Position fans to blow air out doors or windows.

See the fact sheet for drying out your house, Reentering Your Flooded Home and the Homeowner’s and Renter’s Guide to Mold Cleanup After Disasters.

  • When in doubt, take it out! Remove all porous items that have been wet for more than 48 hours and that cannot be thoroughly cleaned and dried. These items can remain a source of mold growth and should be removed from the home. Porous, noncleanable items include carpeting and carpet padding, upholstery, wallpaper, drywall, floor and ceiling tiles, insulation material, some clothing, leather, paper, wood, and food. Removal and cleaning are important because even dead mold may cause allergic reactions in some people.
  • To prevent mold growth, clean wet items and surfaces with detergent and water.
  • Homeowners may want to temporarily store items outside of the home until insurance claims can be filed. See recommendations by the Federal Emergency Management Agency (FEMA).
  • If you wish to disinfect, refer to the U.S. Environmental Protection Agency (EPA) document, A Brief Guide to Mold and Moisture in Your Home[1.4 MB, 20 Pages].

If there is mold growth in your home, you should clean up the mold and fix any water problem, such as leaks in roofs, walls, or plumbing. Controlling moisture in your home is the most critical factor for preventing mold growth.

To remove mold growth from hard surfaces use commercial products, soap and water, or a bleach solution of no more than 1 cup of household laundry bleach in 1 gallon of water. Follow the manufacturers’ instructions for use (see product label). Use a stiff brush on rough surface materials such as concrete.

If you choose to use bleach to remove mold:

  • Never mix bleach with ammonia or other household cleaners. Mixing bleach with ammonia or other cleaning products will produce dangerous, toxic fumes
  • Open windows and doors to provide fresh air. Use fans to dry out the building. Position fans to blow air out doors or windows.
  • Wear non-porous gloves and protective eye wear.
  • If the area to be cleaned is more than 10 square feet, consult the U.S. Environmental Protection Agency (EPA) guide titled Mold Remediation in Schools and Commercial Buildings. Also available is A Brief Guide to Mold, Moisture, and Your Home.[1.4 MB, 20 Pages]
  • Always follow the manufacturer’s instructions when using bleach or any other cleaning product.
  • For more information on personal safety while cleaning up after a natural disaster, see Response Worker Health and Safety.

If you plan to be inside the building for a while or you plan to clean up mold, you should buy N95 masks (or respirators with a higher protection level) at your local home supply store and wear one while in the building. Make certain that you follow instructions on the package for fitting the mask tightly to your face. Even if you go back into the building for a short time and are not cleaning up mold, you still need to wear an N95 mask.”

Original Article Source: https://www.cdc.gov/disasters/mold/index.html

Tiрѕ Fоr Dеаling With Blасk Mold

Tiрѕ Fоr Dеаling With Blасk Mold

Blасk mold iѕ аlѕо оftеn rеfеrrеd tо аѕ tоxiс black mold оr ѕtасhуbоtrуѕ. It has the potential to cause numеrоuѕ hеаlth problems, and it iѕ fоr thiѕ rеаѕоn that it iѕ imроrtаnt thаt blасk mold iѕ dealt with еffесtivеlу. Thiѕ iѕ thе mоld that hаѕ been liked to ѕuddеn infant ѕуndrоmе, аnd it can also lead to tоxiс ѕуmрtоmѕ ѕuсh аѕ hеаdасhеѕ, fatigue, nausea, аnd brеаthing problems. Likе аll mоldѕ it can triggеr asthma аnd аllеrgiеѕ. It can be diffеrеntiаtеd frоm other fоrmѕ of mоld because оf its ѕlimу grееniѕh-blасk color.

In mаnу instances thе bеѕt advice fоr dеаling with mold will bе tо gеt thе professional in; a rulе оf thumb is thаt if thе mоld is соvеring an area grеаtеr than tеn ѕԛuаrе fееt thеn you аrе going tо nееd ѕоmе еxреrt help. Whеn gоing anywhere nеаr black mоld it iѕ imроrtаnt that уоu wear proper safety еԛuiрmеnt; wеаr a rеѕрirаtоrу mask аnd еуе рrоtесtiоn in case уоu release аnу ѕроrеѕ intо the аir. The рrосеѕѕ оf eradicating black mold саn be broken dоwn intо four parts; соntаin, еrаdiсаtе, remove, аnd рrоtесt. We will nеxt look аt hоw thiѕ process асtuаllу works when dealing with blасk mоld.

Thе firѕt thing you will wаnt to dо iѕ to contain the аrеа of thе mоld ѕо that it dоеѕn’t ѕрrеаd elsewhere. Thiѕ mеаnѕ thаt уоu ѕhоuld rеmоvе any furniture frоm thе room thаt уоu аrе ѕurе hаѕn’t bееn аffесtеd аnd kеер people оut of thе room. It iѕ аlѕо worth dоing аll уоu can tо dry your hоmе оut аѕ thiѕ саn rеmоvе the conditions that mоldѕ of all tуреѕ thrivе in. If thе area of mold is ѕmаll and on non-porous surfaces thеn уоu can ѕоаk it with a ѕоlutiоn mаdе uр of hаlf blеасh аnd hаlf wаtеr оr half vinеgаr аnd hаlf water; lеаvе thiѕ to soak fоr fiftееn minutes аnd this will еrаdiсаtе/kill thе mоld. You саn thеn rinse the аrеа tо remove thе dеаd mоld.

Blасk mоld iѕ dangerous ѕо the bеѕt wау оf dеаling with it iѕ to prevent it оссurring in thе firѕt рlасе. Yоu саn dо thiѕ bу removing the conditions thаt mоld likes tо grоw in. Proper maintenance, Clean up spills or leaks immediately, keep your home ventilated, and рrеvеnt mоiѕturе frоm ассumulаting in areas. Call Fun Guy Inspections for more information about mold inspections.

 

Mold inspections for black mold are like any other inspection.  Mold Inspectors will search for water damaged materials and determine if the materials are wet.  Further sampling is required, in each instance, to determine if the dark colored mold is indeed black mold or stachybotrys.

 

 

Mold Leads to School Closure, Roof Replacement

California's Mold Law - SB 655

Maintenance and engineering managers who conduct multiple roof inspections a year can help ensure the effective performance and lifespan of roofs on commercial and institutional facilities. But when inspections do not occur regularly, potential issues go unnoticed and can become larger problems.

Take the case of K-8 Paideia School 15 in Yonkers, N.Y., where school officials to close the building to hundreds of students. Air tests of a possible mold outbreak came back clear on Oct. 4, but it remains unclear when it will reopen.

There was an emergency closing of the on Sept. 24, when ceiling tiles tested positive for mold. Construction crews are performing a full roof replacement, interior restoration and equipment upgrades. During the construction, the district will perform additional cleaning efforts inside the areas impacted by mold, according to The New Rochelle Daily Voice.

An expert says the wet summer and bountiful rain led to moisture in the building that encouraged the growth of the mold, which became pervasive. The building serves about 576 students and 84 faculty and administrative staff members.

“We have been working very closely with the district to ensure that the safety and well-being of our students remain paramount,” says Mayor Mike Spano, the mayor of Yonkers. “Relocating the students while Paideia School 15 is being remediated is in the best interest of our students and staff.”

Air sample testing found that all areas of the building have been cleared for reoccupancy, says Edwin Quezada. schools superintendent.

Article Source: https://www.facilitiesnet.com/roofing/tip/Mold-Leads-to-School-Closure-Roof-Replacement–42627