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Indoor mold

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820:. Air sampling can be used to identify hidden mold and is often used to assess the effectiveness of control measures after remediation. An indoor mold air sampling campaign should be performed over the course of at least several days as the environmental conditions can lead to variations in the day-to-day mold concentration. Stationary samplers assess a specific environment, such as a room or building, whereas personal samplers assess the mold exposure one person receives in all of the environments they enter over the course of sampling. Personal samplers can be attached to workers to assess their respiratory exposures to molds on the job. Personal samplers usually show higher levels of exposure than stationary samples due to the "personal cloud" effect, where the activities of the person re-suspend settled particles. There are several methods that can be used for indoor mold air sampling. 586: 881:-based molecular method that can identify and quantify fungal species. The Environmental Relative Moldiness Index (ERMI) is a numerical that can be used in epidemiological studies to assess mold burdens of houses in the United States. The ERMI consists of a list of 36 fungal species commonly associated with damp houses that can be measured using qPCR. Like swab and surface sampling, bulk and dust sampling can give detailed information about the mold source, but cannot accurately determine the level of exposure to the source. 1159: 890: 770:(EPA) does not generally recommend sampling unless an occupant of the space has symptoms. In most cases, if visible mold growth is present, sampling is unnecessary. Sampling should be performed by a trained professional with specific experience in mold-sampling protocols, sampling methods and the interpretation of findings. It should be done only to make a particular determination, such as airborne spore concentration or identifying a particular 430:, nasal stuffiness, eye irritation, cough and wheezing and skin irritation in some cases. Exposure to mold may heighten sensitivity, depending on the time and nature of exposure. People with chronic lung diseases are at higher risk for mold allergies, and will experience more severe reactions when exposed to mold. Damp indoor environments correlate with upper-respiratory-tract symptoms, such as coughing and wheezing in people with asthma. 730:, to prevent moisture seepage into the home; keeping air-conditioning drip pans clean and drainage lines clear; monitoring indoor humidity; drying areas of moisture or condensation and removing their sources; ensuring that there is adequate ventilation by installing an exhaust fan in your bathroom; treating exposed structural wood or wood framing with a fungicidal encapsulation coating after pre-cleaning (particularly homes with a 181: 917:
spread through the property contributing to adverse health problems and causing secondary damage to the structure and its contents. Significant mold growth may require professional mold remediation to remove the affected building materials and eradicate the source of excess moisture. In extreme cases of mold growth in buildings, it may be more cost-effective to condemn the building than to reduce mold to safe levels.
829: 79: 498: 38: 766:), or where moisture problems are suspected. In many cases, if materials have failed to dry out several days after the suspected water event, mold growth can be suspected even if it is not immediately visible. Often, quick decisions about the immediate safety and health of the environment can be made by these observations before sampling is even needed. The 257: 291:, but invisible to the naked eye, that float through the air and deposit on surfaces. When the temperature, moisture, and available nutrient conditions are correct, the spores can form into new mold colonies where they are deposited. There are many types of mold, but all require moisture and a food source for growth. 659:
cells. If a house has mold, the moisture may originate in the basement or crawl space, a leaking roof or a leak in plumbing pipes. Insufficient ventilation may accelerate moisture buildup. Visible mold colonies may form where ventilation is poorest and on perimeter walls (because they are nearest the
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Bulk removal of material from the contaminated area is used to identify and quantify the mold in the sample. This method is often used to verify contamination and identify the source of contamination. Dust samples can be collected using a vacuum with a collection filter attached. Dust from surfaces
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Mold will start to grow once moisture and organic material come together. This can happen anywhere in a property including bathrooms, walls, garages, bedrooms, kitchens, etc. A smell is a good indicator that there is mold growth that needs immediate attention. If not attended to, the growth can
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Air is the most common form of sampling to assess mold levels. Although, the Environmental Protection Agency (EPA) does not have any current testing protocols. Air sampling is considered to be the most representative method for assessing respiratory exposure to mold. Indoor and outdoor air are
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may have been compromised, mold remediation may be needed. The first step in solving an indoor mold problem is to remove the moisture source; new mold will begin to grow on moist, porous surfaces within 24 to 48 hours. There are a number of ways to prevent mold growth. Some cleaning companies
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or too drafty. Mold problems occur in airtight homes more frequently in the warmer months (when humidity is high inside the house, and moisture is trapped), and occur in drafty homes more frequently in the colder months (when warm air escapes from the living area and condenses). If a house is
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system creates a difference in temperature, encouraging condensation. The high rate of dusty air movement through an HVAC system may furnish ample food for mold. Since the air-conditioning system is not always running, warm conditions are the final component for mold growth.
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sampled, and their mold spore concentrations are compared. Indoor mold concentrations should be less than or equal to outdoor concentrations with similar distributions of species. A predominant difference in species or higher indoor concentrations can indicate poor
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Mold growth can be inhibited by keeping surfaces at conditions that are further from condensation, with relative humidity levels below 75%. This usually translates to a relative humidity of indoor air below 60%, in agreement with the guidelines for
625:– cellulose (the cell wall of green plants) is a common food for indoor spores; moisture – to begin the decaying process caused by mold; and time – mold growth begins from 24 hours to 10 days after the provision of growing conditions. 1890:
Vesper, Stephen; McKinstry, Craig; Haugland, Richard; Wymer, Larry; Bradham, Karen; Ashley, Peter; Cox, David; Dewalt, Gary; Friedman, Warren (August 2007). "Development of an Environmental Relative Moldiness Index for US Homes".
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are capable of sustaining mold growth and mold spores are ubiquitous, mold growth in an indoor environment is typically related to water or moisture exposure and may be caused by incomplete drying of flooring materials (such as
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on surfaces cooler than the moisture-laden air, enabling mold to flourish. This moisture vapor passes through walls and ceilings, typically condensing during the winter in climates with a long heating season. Floors over
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The goals of remediation are to remove (or clean) contaminated materials, preventing fungi (and fungi-contaminated dust) from entering an occupied (or non-contaminated) area while protecting workers performing the
1105:, also known as High Efficiency Particulate Filter is commonly used with mold remediation for safely removing any mold spores from the surface and building materials to deter these pores from becoming airborne. 1133:: Large, isolated areas (30–100 square feet (2.8–9.3 m)): Professionals experienced in microbial investigations or mold remediation should be consulted, and personnel should be trained in the handling of 758:, lifting (or removing) carpets, checking behind wallpaper or paneling, checking ventilation ductwork and exposing wall cavities. Efforts typically focus on areas where there are signs of liquid moisture or 852:, may also be used for species identification and quantification. Swab and surface sampling can give detailed information about the mold, but cannot measure the actual mold exposure because it is not 578:, and carpet padding provide food for mold. In carpet, organic load such as invisible dust and cellulose are food sources. After water damage to a building, mold grows in walls and then becomes 1114:
During mold remediation in the U.S., the level of contamination dictates the protection level for remediation workers. Contamination levels have been enumerated as I, II, III, and IV:
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is left out in the environment for a set period of time, sometimes weeks. Dust samples can be analyzed using culture-based or culture-independent methods. Quantitative PCR is a
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Dry brushing or agitation device: Wire brushing or sanding is used when microbial growth can be seen on solid wood surfaces such as framing or underlayment (the subfloor).
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effect as low humidity. Mold grows best in warm temperatures, 25 to 30 °C (77 to 86 °F), although growth may occur between 0 and 35 °C (32 and 95 °F).
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The effective way to clean mold is to use detergent solutions which physically remove mold. Many commercially available detergents marketed for mold cleanup include an
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or with dirt floors, are mold-prone. The "doormat test" detects moisture from concrete slabs without a sub-slab vapor barrier. Inorganic materials, such as metal or
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and death. Prolonged exposure (for example, on a daily basis) can be particularly harmful. Mycotoxins can persist in the indoor environment even after death of the
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due to improper ventilation, insufficient heating or poor thermal quality of the building envelope. Even something as simple as drying clothes indoors on
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An observation of the indoor environment should be conducted before any sampling is performed. The area should be surveyed for odors indicating mold or
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piles, cut grass, and wooded areas. More than half of adult workers in moldy/humid buildings suffer from nasal or sinus symptoms due to mold exposure.
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Mold is detectable by smell and signs of water damage on walls or ceiling and can grow in places invisible to the human eye. It may be found behind
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Removing one of the three requirements for mold reduces (or eliminates) new mold growth: moisture; food for the mold spores (for example, dust or
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is rubbed across the area being sampled, often a measured area, and subsequently sent to the mold testing laboratory. The swab can rubbed on an
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until subsequent high humidity; suitable conditions reactivate mold. Mycotoxin levels are higher in buildings which have had a water incident.
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that recommend a relative humidity between 40 - 60 %. Moisture buildup in buildings may arise from water penetrating areas of the
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Clark, Sierra N.; Lam, Holly C. Y.; Goode, Emma-Jane; Marczylo, Emma L.; Exley, Karen S.; Dimitroulopoulou, Sani (2023-08-02).
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in their lungs when they are exposed to mold. These people should stay away from areas that are likely to have mold, such as
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can increase the risk of mold growth, if the humidity produced is not able to escape the building via ventilation.
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Significant mold growth requires moisture and food sources and a substrate capable of sustaining growth. Common
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of mycotoxins. After a flood or major leak, mycotoxin levels are higher – even after a building has dried out.
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such as fallen leaves and dead trees; indoors, mold growth should be avoided. Mold reproduces by means of tiny
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Mold is found everywhere and can grow on almost any substance when moisture is present. It reproduces by
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Wet vacuum: Wet vacuuming is used on wet materials, and this method is one of those approved by the EPA.
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If there are mold problems in a house only during certain times of the year, the house is probably too
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and can spread through the air attached to these dust particles or spores. There must be very specific
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The purpose of cleanup is to eliminate mold and remove contaminated materials. Killing mold with a
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is a natural part of the environment and plays an important part in nature by breaking down dead
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Viegas, Carla Sofia Costa; Viegas, Susana; Gomes, Anita; Täubel, Martin; Sabino, Raquel (2017).
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such as floors, beds, or furniture is often collected to assess health effects from exposure in
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Surface sampling measures the number of mold spores deposited on indoor surfaces. With swab, a
419:. Signs of mold-related respiratory problems in an infant include a persistent cough or wheeze. 1839:. Viegas, Carla Sofia Costa,, Viegas, Susana,, Gomes, Anita,, Täubel, Martin,, Sabino, Raquel. 3584: 3061: 3016: 2771: 2766: 2696: 2592: 2428: 2231: 1916: 1908: 1858: 1848: 1840: 1806: 1719: 1709: 1674: 1633: 1532: 1522: 1437: 1427: 1392: 1351: 751: 712: 590: 540: 506: 427: 406: 358: 2174: 1551: 1227: 3528: 3283: 3278: 2861: 2567: 2465: 2460: 2455: 2372: 1900: 1796: 1788: 1769:
Niemeier, R. Todd; Sivasubramani, Satheesh K.; Reponen, Tiina; Grinshpun, Sergey A. (2006).
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Mold is ubiquitous, and mold spores are a common component of household and workplace
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disposal: Sealed in the remediation area, debris is usually discarded with ordinary
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causing reactions in humans remain in dead mold. The following methods are used.
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Culture dish with A. fumigatus colonies, a species commonly found in indoor air
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or fabric, from plumbing leaks, rainwater or groundwater penetration, or from
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Food sources for mold in buildings include cellulose-based materials such as
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In the U.S., sampling and analysis should follow the recommendations of the
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Moisture Control Guidance for Building Design, Construction and Maintenance
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Residential mold may be prevented and controlled by cleaning and repairing
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Exposure to microbiological agents in indoor and occupational environments
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After remediation, the premises should be reevaluated to ensure success.
1010: 991: 763: 743: 622: 579: 519: 511: 475: 467: 370: 275:, is a fungal growth that develops on wet materials in interior spaces. 256: 2751: 2423: 2007:"List A: Antimicrobial Products Registered with the EPA as Sterilizers" 1328:"Meta-Mold exposure and respiratory health in damp indoor environments" 983: 963: 942: 934: 771: 693:(HVAC) systems can produce all three requirements for mold growth. The 687:); and warmth since mold generally does not grow in cold environments. 652: 615: 559: 555: 551: 390: 409:. Infants may develop respiratory symptoms as a result of exposure to 3428: 3180: 2986: 2736: 2161: 1942: 1419: 1030: 817: 782:
Before sampling, a subsequent course of action should be determined.
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Mold colonies can grow inside buildings, and the chief hazard is the
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BS 5250:2021 - Management of moisture in buildings. Code of practice
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and equipped with respiratory protection, gloves and eye protection;
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Indoor mold on the head jamb of the window in a multi-story building
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with a half-face respirator prevent mold spores from reaching the
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Infants in homes with mold have a much greater risk of developing
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studies. Researchers of indoor mold also use a long-term settled
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are available to keep out particles down to one micrometer, and
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keep mold spores from entering skin cuts. Gloves are made of
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deal primarily with the United States and do not represent a
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Although this home experienced minor exterior damage from
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WHO Guidelines for Indoor Air Quality: Dampness and Mould
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HVAC cleaning: Should be done by a trained professional.
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to humans, potentially causing allergic reactions and
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New York City Department of Health and Mental Hygiene
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National Institute for Occupational Safety and Health
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conditions in order for fungi to produce mycotoxins.
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(2001). 1653:Madgwick, Della; Wood, Hannah (August 8, 2016). 1584:"A Brief Guide to Mold, Moisture and Your Home" 2162:"Skeptoid #494: Black Mold: Peril or Prosaic?" 1321: 1319: 2190: 2152:Environmental Protection Agency Mold Homepage 2122:United States Environmental Protection Agency 2015:United States Environmental Protection Agency 1980:United States Environmental Protection Agency 1948:United States Environmental Protection Agency 1743:United States Environmental Protection Agency 1589:United States Environmental Protection Agency 1046:Equipment used in mold remediation includes: 787:Occupational Safety and Health Administration 768:United States Environmental Protection Agency 501:Black indoor mold growing in a humid bathroom 188:The examples and perspective in this article 8: 621:Spores need three things to grow into mold: 29:Fungal growth that develops on wet materials 2042: 2040: 522:problems can lead to interior mold growth. 66:Learn how and when to remove these messages 2957:High efficiency glandless circulating pump 2206:Heating, ventilation, and air conditioning 2197: 2183: 2175: 2090:Centers for Disease Control and Prevention 1476:Centers for Disease Control and Prevention 1297:Centers for Disease Control and Prevention 1233:Centers for Disease Control and Prevention 691:Heating, ventilation, and air conditioning 1800: 1386: 1345: 672:artificially humidified, by the use of a 244:Learn how and when to remove this message 226:Learn how and when to remove this message 163:Learn how and when to remove this message 3391:Mold growth, assessment, and remediation 496: 255: 1975:"Selected EPA-Registered Disinfectants" 1219: 1075:to document findings during evaluation; 1053:to measure drying of damaged materials; 795:American Industrial Hygiene Association 2025:from the original on February 26, 2021 1868: 1830: 1828: 1826: 1824: 1822: 1820: 325:Symptoms of mold exposure may include 3264:Programmable communicating thermostat 1506: 1504: 1502: 1500: 1498: 7: 3386:Mechanical, electrical, and plumbing 1596:from the original on January 6, 2020 750:or leaking pipes, and water-damaged 643:and the paper facing on drywall and 341:; respiratory difficulties, such as 309:. 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Philadelphia: 1326:Park J, Cox-Ganser JM (2011). 1265:Minnesota Department of Health 1: 3401:Testing, adjusting, balancing 3345:Building information modeling 3340:Building services engineering 2917:Ground-coupled heat exchanger 2445:Demand controlled ventilation 2393:Building insulation materials 1875:: CS1 maint: date and year ( 1079:Personal protective equipment 976:personal protective equipment 482:Causes and growing conditions 2962:High-pressure cut-off switch 2513:Ice storage air conditioning 2434:Dedicated outdoor air system 2083:NIOSH (September 19, 2018). 1905:10.1097/JOM.0b013e3181255e98 1388:10.3390/environments10080136 1260:"Mold and Moisture in Homes" 3305:Thermostatic radiator valve 3107:Thermostatic radiator valve 2618:Underfloor air distribution 2553:Radiant heating and cooling 2471:Energy recovery ventilation 2383:Automobile air conditioning 2247:Domestic energy consumption 929:Cleanup and removal methods 202:, discuss the issue on the 3621: 3454:Institute of Refrigeration 3335:Architectural technologist 2807:Electrostatic precipitator 1738:"Mold Testing or Sampling" 1188:High-ozone shock treatment 804: 754:. This can include moving 570:, wood framing, composite 466:. They can adhere to dust 437: 298: 3507:Volatile organic compound 3366:Environmental engineering 3330:Architectural engineering 3132:Ultra-low particulate air 2717:Automatic balancing valve 2645:Variable refrigerant flow 2497:Heat recovery ventilation 2440:Deep water source cooling 1793:10.1080/15459620600637333 1424:World Health Organization 1173:Environmental engineering 824:Swab and surface sampling 793:(NIOSH), the EPA and the 3554:Template:Home automation 3376:Kitchen exhaust cleaning 3072:Solar-assisted heat pump 2672:Air conditioner inverter 2451:Displacement ventilation 2342:Vapour pressure of water 2327:Thermal destratification 970:of the eyes. Disposable 873:where a dust cloth or a 383:obstructive lung disease 3549:World Refrigeration Day 3396:Refrigerant reclamation 3325:Architectural acoustics 3269:Programmable thermostat 3201:Clean air delivery rate 3097:Thermal expansion valve 3012:Pressurisation ductwork 2922:Ground source heat pump 2363:Absorption refrigerator 1671:10.1108/SS-10-2015-0048 1333:Frontiers in Bioscience 1089:, impervious suit, and 937:is insufficient, since 535:and basements, without 490:, which are carried by 3539:Glossary of HVAC terms 3501:Sick building syndrome 3381:Mechanical engineering 3092:Smoke exhaust ductwork 2523:Mixed-mode ventilation 1983:. September 28, 2015. 1208:Sick building syndrome 1059:, often paired with a 894: 871:dust collection system 860:Bulk and dust sampling 844:to grow the mold on a 833: 655:, and dust containing 594: 502: 460:neurological disorders 455:Stachybotrys chartarum 287:. The spores are like 267:(American English) or 261: 3559:Template:Solar energy 3237:Intelligent buildings 3196:Carbon dioxide sensor 2583:Room air distribution 2403:Central solar heating 2160:(November 24, 2015). 1236:. September 1, 2015. 892: 831: 805:Further information: 588: 500: 259: 3605:Indoor air pollution 3361:Duct leakage testing 3351:Deep energy retrofit 3295:Thermographic camera 3232:Infrared thermometer 2707:Air source heat pump 2656:Water heat recycling 2222:Air changes per hour 1785:Taylor & Francis 1521:. p. 41606485. 1304:on December 16, 2019 1178:Environmental health 1097:Thermographic camera 315:respiratory diseases 208:create a new article 200:improve this article 97:improve this article 3227:HVAC control system 3217:Home energy monitor 3191:Building automation 2977:Inverter compressor 2639:Variable air volume 2548:Passive ventilation 2518:Kitchen ventilation 2418:Constant air volume 2388:Autonomous building 2018:. August 15, 2016. 1951:. October 7, 2015. 1845:Springer Publishing 1592:. August 13, 2014. 1556:Dehumidifier Critic 1272:on January 26, 2019 1203:Occupational asthma 1135:hazardous materials 1017:and drying quickly. 939:chemical substances 610:, on the inside of 381:illnesses, such as 3595:Industrial hygiene 3490:Indoor air quality 3434:ASTM International 3371:Hydronic balancing 3148:Wood-burning stove 3027:Radiator reflector 2812:Evaporative cooler 2623:Underfloor heating 2608:Thermal insulation 1198:Hurricane response 1035:construction waste 904:fabric restoration 899:indoor air quality 895: 834: 814:indoor air quality 752:building materials 595: 507:building materials 503: 444:Some mold produce 385:, may get serious 311:mold health issues 301:Mold health issues 262: 3567: 3566: 3483:Health and safety 3062:Scroll compressor 3017:Process duct work 2772:Convection heater 2767:Condensing boiler 2697:Air-mixing plenum 2593:Solar combisystem 2429:Cross ventilation 2232:Building envelope 2125:. July 31, 2014. 2057:. November 2008. 1854:978-3-319-61688-9 1841:Cham, Switzerland 1659:Structural Survey 1639:978-0-539-18975-9 1110:Protection levels 713:building envelope 591:Hurricane Katrina 541:polished concrete 428:throat irritation 407:allergic rhinitis 375:Immunocompromised 359:throat irritation 353:, and persistent 254: 253: 246: 236: 235: 228: 210:, as appropriate. 173: 172: 165: 147: 70: 16:(Redirected from 3612: 3590:Fungi and humans 3580:Building biology 3529:Building science 3284:Smart thermostat 3279:Room temperature 2862:Fireplace insert 2568:Radon mitigation 2466:Electric heating 2461:District heating 2456:District cooling 2373:Air conditioning 2199: 2192: 2185: 2176: 2171: 2139: 2138: 2136: 2134: 2113: 2107: 2106: 2104: 2102: 2080: 2074: 2073: 2071: 2069: 2063: 2052: 2044: 2035: 2034: 2032: 2030: 2024: 2011: 2003: 1997: 1996: 1994: 1992: 1971: 1965: 1964: 1962: 1960: 1939: 1933: 1932: 1887: 1881: 1880: 1874: 1866: 1832: 1815: 1814: 1804: 1766: 1760: 1759: 1757: 1755: 1746:. May 13, 2015. 1734: 1728: 1727: 1701: 1695: 1694: 1692: 1690: 1665:(4/5): 320–330. 1650: 1644: 1643: 1626: 1620: 1619: 1618:. December 2013. 1612: 1606: 1605: 1603: 1601: 1580: 1567: 1566: 1564: 1562: 1547: 1541: 1540: 1508: 1493: 1492: 1490: 1488: 1479:. May 17, 2013. 1467: 1461: 1460: 1458: 1456: 1450: 1417: 1407: 1401: 1400: 1390: 1366: 1360: 1359: 1349: 1323: 1314: 1313: 1311: 1309: 1288: 1282: 1281: 1279: 1277: 1268:. Archived from 1256: 1250: 1249: 1247: 1245: 1224: 1167: 1162: 1161: 1160: 1001:Dry-ice blasting 968:mucous membranes 893:Mold remediation 695:air conditioning 612:dropped ceilings 327:nasal congestion 249: 242: 231: 224: 220: 217: 211: 183: 182: 175: 168: 161: 157: 154: 148: 146: 105: 81: 73: 62: 40: 39: 32: 21: 3620: 3619: 3615: 3614: 3613: 3611: 3610: 3609: 3570: 3569: 3568: 3563: 3524:ASHRAE Handbook 3512: 3496:Passive smoking 3478: 3411: 3405: 3317: 3315: 3309: 3163: 3157: 3138:Whole-house fan 3052:Run-around coil 3047:Reversing valve 2992:Mechanical room 2982:Kerosene heater 2972:Infrared heater 2902:Gasoline heater 2842:Fan filter unit 2757:Condensate pump 2742:Centrifugal fan 2660: 2563:Radiant heating 2558:Radiant cooling 2533:Passive cooling 2528:Microgeneration 2398:Central heating 2346: 2322:Thermal comfort 2214: 2208: 2203: 2156: 2148: 2143: 2142: 2132: 2130: 2115: 2114: 2110: 2100: 2098: 2082: 2081: 2077: 2067: 2065: 2061: 2050: 2046: 2045: 2038: 2028: 2026: 2022: 2009: 2005: 2004: 2000: 1990: 1988: 1973: 1972: 1968: 1958: 1956: 1943:"What is mold?" 1941: 1940: 1936: 1889: 1888: 1884: 1867: 1855: 1834: 1833: 1818: 1768: 1767: 1763: 1753: 1751: 1736: 1735: 1731: 1716: 1703: 1702: 1698: 1688: 1686: 1652: 1651: 1647: 1640: 1628: 1627: 1623: 1614: 1613: 1609: 1599: 1597: 1582: 1581: 1570: 1560: 1558: 1549: 1548: 1544: 1529: 1510: 1509: 1496: 1486: 1484: 1469: 1468: 1464: 1454: 1452: 1448: 1434: 1415: 1409: 1408: 1404: 1368: 1367: 1363: 1325: 1324: 1317: 1307: 1305: 1290: 1289: 1285: 1275: 1273: 1258: 1257: 1253: 1243: 1241: 1226: 1225: 1221: 1216: 1193:House dust mite 1163: 1158: 1156: 1153: 1112: 1044: 931: 887: 862: 826: 816:and a possible 809: 803: 780: 740: 709:thermal comfort 704: 600: 562:strips, finish 505:Because common 484: 442: 436: 399: 363:skin irritation 323: 303: 297: 250: 239: 238: 237: 232: 221: 215: 212: 197: 184: 180: 169: 158: 152: 149: 106: 104: 94: 82: 41: 37: 30: 23: 22: 18:Mold prevention 15: 12: 11: 5: 3618: 3616: 3608: 3607: 3602: 3597: 3592: 3587: 3582: 3572: 3571: 3565: 3564: 3562: 3561: 3556: 3551: 3546: 3541: 3536: 3531: 3526: 3520: 3518: 3514: 3513: 3511: 3510: 3504: 3498: 3493: 3486: 3484: 3480: 3479: 3477: 3476: 3471: 3466: 3461: 3456: 3451: 3446: 3441: 3436: 3431: 3426: 3421: 3415: 3413: 3407: 3406: 3404: 3403: 3398: 3393: 3388: 3383: 3378: 3373: 3368: 3363: 3358: 3353: 3348: 3342: 3337: 3332: 3327: 3321: 3319: 3311: 3310: 3308: 3307: 3302: 3297: 3292: 3286: 3281: 3276: 3274:Psychrometrics 3271: 3266: 3261: 3256: 3250: 3244: 3239: 3234: 3229: 3224: 3219: 3214: 3209: 3204: 3198: 3193: 3188: 3183: 3178: 3173: 3171:Air flow meter 3167: 3165: 3159: 3158: 3156: 3155: 3150: 3145: 3140: 3135: 3129: 3124: 3119: 3114: 3109: 3104: 3099: 3094: 3089: 3084: 3079: 3074: 3069: 3064: 3059: 3054: 3049: 3044: 3039: 3034: 3029: 3024: 3019: 3014: 3009: 3004: 2999: 2994: 2989: 2984: 2979: 2974: 2969: 2964: 2959: 2954: 2949: 2947:Heating system 2944: 2939: 2934: 2929: 2927:Heat exchanger 2924: 2919: 2914: 2909: 2904: 2899: 2894: 2892:Gas compressor 2889: 2884: 2879: 2874: 2869: 2864: 2859: 2854: 2849: 2844: 2839: 2834: 2829: 2827:Expansion tank 2824: 2819: 2814: 2809: 2804: 2799: 2794: 2789: 2784: 2779: 2774: 2769: 2764: 2759: 2754: 2749: 2747:Ceramic heater 2744: 2739: 2734: 2729: 2724: 2719: 2714: 2709: 2704: 2699: 2694: 2689: 2684: 2679: 2674: 2668: 2666: 2662: 2661: 2659: 2658: 2653: 2648: 2642: 2636: 2630: 2625: 2620: 2615: 2610: 2605: 2600: 2595: 2590: 2588:Solar air heat 2585: 2580: 2578:Renewable heat 2575: 2570: 2565: 2560: 2555: 2550: 2545: 2540: 2535: 2530: 2525: 2520: 2515: 2510: 2505: 2500: 2494: 2489: 2487:Forced-air gas 2484: 2479: 2474: 2468: 2463: 2458: 2453: 2448: 2442: 2437: 2431: 2426: 2421: 2415: 2410: 2405: 2400: 2395: 2390: 2385: 2380: 2375: 2370: 2365: 2360: 2354: 2352: 2348: 2347: 2345: 2344: 2339: 2337:Thermodynamics 2334: 2329: 2324: 2319: 2314: 2309: 2307:Psychrometrics 2304: 2299: 2294: 2289: 2284: 2279: 2274: 2269: 2264: 2262:Gas compressor 2259: 2257:Fluid dynamics 2254: 2249: 2244: 2239: 2234: 2229: 2224: 2218: 2216: 2210: 2209: 2204: 2202: 2201: 2194: 2187: 2179: 2173: 2172: 2158:Dunning, Brian 2154: 2147: 2146:External links 2144: 2141: 2140: 2108: 2075: 2036: 1998: 1966: 1934: 1899:(8): 829–833. 1882: 1853: 1816: 1761: 1729: 1714: 1696: 1645: 1638: 1621: 1607: 1568: 1542: 1527: 1494: 1462: 1432: 1402: 1361: 1340:(2): 757–771. 1315: 1283: 1251: 1218: 1217: 1215: 1212: 1211: 1210: 1205: 1200: 1195: 1190: 1185: 1180: 1175: 1169: 1168: 1152: 1149: 1145: 1144: 1138: 1128: 1122: 1111: 1108: 1107: 1106: 1100: 1094: 1091:eye protection 1076: 1073:Digital camera 1070: 1064: 1057:Humidity gauge 1054: 1051:Moisture meter 1043: 1040: 1039: 1038: 1028: 1025:vacuum cleaner 1018: 1007: 1004: 998: 995: 956: 953: 930: 927: 902:specialize in 886: 883: 861: 858: 825: 822: 802: 799: 779: 776: 748:stagnant water 739: 736: 703: 700: 645:organic matter 614:, the back of 599: 596: 537:vapor barriers 483: 480: 438:Main article: 435: 432: 424:health effects 398: 395: 339:eye irritation 322: 319: 299:Main article: 296: 295:Health effects 293: 281:organic matter 252: 251: 234: 233: 194:of the subject 192:worldwide view 187: 185: 178: 171: 170: 85: 83: 76: 71: 45: 44: 42: 35: 28: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3617: 3606: 3603: 3601: 3598: 3596: 3593: 3591: 3588: 3586: 3583: 3581: 3578: 3577: 3575: 3560: 3557: 3555: 3552: 3550: 3547: 3545: 3542: 3540: 3537: 3535: 3532: 3530: 3527: 3525: 3522: 3521: 3519: 3515: 3508: 3505: 3502: 3499: 3497: 3494: 3491: 3488: 3487: 3485: 3481: 3475: 3472: 3470: 3467: 3465: 3462: 3460: 3457: 3455: 3452: 3450: 3447: 3445: 3442: 3440: 3437: 3435: 3432: 3430: 3427: 3425: 3422: 3420: 3417: 3416: 3414: 3412:organizations 3408: 3402: 3399: 3397: 3394: 3392: 3389: 3387: 3384: 3382: 3379: 3377: 3374: 3372: 3369: 3367: 3364: 3362: 3359: 3357: 3356:Duct cleaning 3354: 3352: 3349: 3346: 3343: 3341: 3338: 3336: 3333: 3331: 3328: 3326: 3323: 3322: 3320: 3312: 3306: 3303: 3301: 3298: 3296: 3293: 3290: 3287: 3285: 3282: 3280: 3277: 3275: 3272: 3270: 3267: 3265: 3262: 3260: 3257: 3254: 3251: 3248: 3245: 3243: 3240: 3238: 3235: 3233: 3230: 3228: 3225: 3223: 3220: 3218: 3215: 3213: 3210: 3208: 3207:Control valve 3205: 3202: 3199: 3197: 3194: 3192: 3189: 3187: 3184: 3182: 3179: 3177: 3174: 3172: 3169: 3168: 3166: 3160: 3154: 3151: 3149: 3146: 3144: 3141: 3139: 3136: 3133: 3130: 3128: 3127:Turning vanes 3125: 3123: 3120: 3118: 3115: 3113: 3110: 3108: 3105: 3103: 3102:Thermal wheel 3100: 3098: 3095: 3093: 3090: 3088: 3085: 3083: 3080: 3078: 3075: 3073: 3070: 3068: 3067:Solar chimney 3065: 3063: 3060: 3058: 3055: 3053: 3050: 3048: 3045: 3043: 3040: 3038: 3035: 3033: 3030: 3028: 3025: 3023: 3020: 3018: 3015: 3013: 3010: 3008: 3005: 3003: 3000: 2998: 2995: 2993: 2990: 2988: 2985: 2983: 2980: 2978: 2975: 2973: 2970: 2968: 2965: 2963: 2960: 2958: 2955: 2953: 2950: 2948: 2945: 2943: 2940: 2938: 2935: 2933: 2930: 2928: 2925: 2923: 2920: 2918: 2915: 2913: 2910: 2908: 2905: 2903: 2900: 2898: 2895: 2893: 2890: 2888: 2885: 2883: 2880: 2878: 2875: 2873: 2870: 2868: 2865: 2863: 2860: 2858: 2855: 2853: 2850: 2848: 2845: 2843: 2840: 2838: 2837:Fan coil unit 2835: 2833: 2830: 2828: 2825: 2823: 2820: 2818: 2815: 2813: 2810: 2808: 2805: 2803: 2800: 2798: 2795: 2793: 2790: 2788: 2785: 2783: 2782:Cooling tower 2780: 2778: 2775: 2773: 2770: 2768: 2765: 2763: 2760: 2758: 2755: 2753: 2750: 2748: 2745: 2743: 2740: 2738: 2735: 2733: 2730: 2728: 2725: 2723: 2720: 2718: 2715: 2713: 2710: 2708: 2705: 2703: 2700: 2698: 2695: 2693: 2690: 2688: 2685: 2683: 2680: 2678: 2675: 2673: 2670: 2669: 2667: 2663: 2657: 2654: 2652: 2649: 2646: 2643: 2640: 2637: 2634: 2631: 2629: 2628:Vapor barrier 2626: 2624: 2621: 2619: 2616: 2614: 2611: 2609: 2606: 2604: 2603:Solar heating 2601: 2599: 2598:Solar cooling 2596: 2594: 2591: 2589: 2586: 2584: 2581: 2579: 2576: 2574: 2573:Refrigeration 2571: 2569: 2566: 2564: 2561: 2559: 2556: 2554: 2551: 2549: 2546: 2544: 2543:Passive house 2541: 2539: 2536: 2534: 2531: 2529: 2526: 2524: 2521: 2519: 2516: 2514: 2511: 2509: 2506: 2504: 2501: 2498: 2495: 2493: 2490: 2488: 2485: 2483: 2480: 2478: 2475: 2472: 2469: 2467: 2464: 2462: 2459: 2457: 2454: 2452: 2449: 2446: 2443: 2441: 2438: 2435: 2432: 2430: 2427: 2425: 2422: 2419: 2416: 2414: 2413:Chilled water 2411: 2409: 2406: 2404: 2401: 2399: 2396: 2394: 2391: 2389: 2386: 2384: 2381: 2379: 2376: 2374: 2371: 2369: 2366: 2364: 2361: 2359: 2356: 2355: 2353: 2349: 2343: 2340: 2338: 2335: 2333: 2330: 2328: 2325: 2323: 2320: 2318: 2315: 2313: 2312:Sensible heat 2310: 2308: 2305: 2303: 2300: 2298: 2295: 2293: 2292:Noise control 2290: 2288: 2285: 2283: 2280: 2278: 2275: 2273: 2272:Heat transfer 2270: 2268: 2265: 2263: 2260: 2258: 2255: 2253: 2250: 2248: 2245: 2243: 2240: 2238: 2235: 2233: 2230: 2228: 2225: 2223: 2220: 2219: 2217: 2211: 2207: 2200: 2195: 2193: 2188: 2186: 2181: 2180: 2177: 2169: 2168: 2163: 2159: 2155: 2153: 2150: 2149: 2145: 2128: 2124: 2123: 2118: 2112: 2109: 2096: 2092: 2091: 2086: 2079: 2076: 2060: 2056: 2049: 2043: 2041: 2037: 2021: 2017: 2016: 2008: 2002: 1999: 1986: 1982: 1981: 1976: 1970: 1967: 1954: 1950: 1949: 1944: 1938: 1935: 1930: 1926: 1922: 1918: 1914: 1910: 1906: 1902: 1898: 1894: 1886: 1883: 1878: 1872: 1864: 1860: 1856: 1850: 1846: 1842: 1838: 1831: 1829: 1827: 1825: 1823: 1821: 1817: 1812: 1808: 1803: 1798: 1794: 1790: 1786: 1782: 1778: 1777: 1772: 1765: 1762: 1749: 1745: 1744: 1739: 1733: 1730: 1725: 1721: 1717: 1715:0-683-08027-X 1711: 1707: 1700: 1697: 1684: 1680: 1676: 1672: 1668: 1664: 1660: 1656: 1649: 1646: 1641: 1635: 1631: 1625: 1622: 1617: 1611: 1608: 1595: 1591: 1590: 1585: 1579: 1577: 1575: 1573: 1569: 1557: 1553: 1546: 1543: 1538: 1534: 1530: 1528:9780683080278 1524: 1520: 1516: 1515: 1507: 1505: 1503: 1501: 1499: 1495: 1482: 1478: 1477: 1472: 1466: 1463: 1447: 1443: 1439: 1435: 1433:9789289041898 1429: 1425: 1421: 1414: 1413: 1406: 1403: 1398: 1394: 1389: 1384: 1380: 1376: 1372: 1365: 1362: 1357: 1353: 1348: 1343: 1339: 1335: 1334: 1329: 1322: 1320: 1316: 1303: 1299: 1298: 1293: 1287: 1284: 1271: 1267: 1266: 1261: 1255: 1252: 1239: 1235: 1234: 1229: 1223: 1220: 1213: 1209: 1206: 1204: 1201: 1199: 1196: 1194: 1191: 1189: 1186: 1184: 1181: 1179: 1176: 1174: 1171: 1170: 1166: 1155: 1150: 1148: 1142: 1139: 1136: 1132: 1129: 1126: 1123: 1120: 1117: 1116: 1115: 1109: 1104: 1101: 1098: 1095: 1092: 1088: 1084: 1080: 1077: 1074: 1071: 1068: 1065: 1062: 1058: 1055: 1052: 1049: 1048: 1047: 1041: 1036: 1032: 1029: 1026: 1022: 1019: 1016: 1012: 1008: 1005: 1002: 999: 996: 993: 989: 985: 981: 977: 973: 969: 965: 961: 957: 954: 951: 948: 947: 946: 944: 940: 936: 928: 926: 924: 918: 914: 912: 907: 905: 900: 891: 884: 882: 880: 876: 872: 868: 859: 857: 855: 851: 847: 846:growth medium 843: 839: 830: 823: 821: 819: 818:health hazard 815: 808: 800: 798: 796: 792: 788: 783: 777: 775: 773: 769: 765: 761: 757: 753: 749: 745: 737: 735: 733: 729: 724: 722: 718: 714: 710: 701: 699: 696: 692: 688: 686: 681: 679: 675: 670: 665: 663: 658: 654: 650: 646: 642: 638: 633: 631: 626: 624: 619: 617: 613: 609: 605: 597: 592: 587: 583: 581: 577: 573: 572:wood flooring 569: 565: 561: 557: 553: 549: 544: 542: 538: 534: 529: 525: 521: 517: 513: 508: 499: 495: 493: 489: 481: 479: 477: 473: 469: 465: 461: 457: 456: 451: 447: 441: 433: 431: 429: 425: 420: 418: 414: 413: 408: 404: 396: 394: 392: 388: 384: 380: 376: 372: 368: 364: 360: 356: 352: 348: 344: 340: 336: 332: 328: 320: 318: 316: 312: 308: 302: 294: 292: 290: 286: 282: 278: 274: 270: 266: 258: 248: 245: 230: 227: 219: 209: 205: 201: 195: 193: 186: 177: 176: 167: 164: 156: 145: 142: 138: 135: 131: 128: 124: 121: 117: 114: –  113: 112:"Indoor mold" 109: 108:Find sources: 102: 98: 92: 91: 86:This article 84: 80: 75: 74: 69: 67: 60: 59: 54: 53: 48: 43: 34: 33: 27: 19: 3534:Fireproofing 3318:and services 3314:Professions, 3212:Gas detector 3112:Trickle vent 3087:Smoke damper 3082:Smoke canopy 3077:Space heater 3007:Plenum space 2942:Heating film 2822:Exhaust hood 2792:Dehumidifier 2732:Blast damper 2727:Barrier pipe 2702:Air purifier 2613:Thermosiphon 2492:Free cooling 2408:Chilled beam 2332:Thermal mass 2317:Stack effect 2302:Particulates 2282:Infiltration 2213:Fundamental 2165: 2131:. 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