3 Mold Litigation is increasing Introduction Mold Litigation is expensive Contractors are target defendants
4 Mold Problems In Buildings Are Not New Leviticus, Chapter 14, verses in the Old Testament of The Bible describes mold removal in a house using methods similar to those used today.
5 Leviticus, Chapter 14 The LORD said to Moses and Aaron, 34. When you enter the land of Canaan, which I am giving you as your possession, and I put a spreading mildew in a house in that land, 35. the owner of the house must go and tell the priest, I have seen something that looks like mildew in my house.
6 Leviticus, Chapter 14, cont d. 36 The priest shall then command that they empty the house before the priest comes to look at the mark, so that everything in the house need not become unclean; and afterward, the priest shall go in to look at the house.
7 Leviticus, Chapter 14, cont d. 37 So he shall look at the mark and if the mark on the walls of the house has greenish or reddish depressions and appears deeper than the surface 38 The priest shall return on the seventh day and make an inspection. If the mark has indeed spread in the walls of the house
8 Leviticus, Chapter 14, cont d. 38 The priest shall go out the doorway of the house and close it up for seven days.. 39 On the seventh day the priest shall return to inspect the house. 40 If the mildew has spread on the walls, he is to order that the contaminated stones be torn out and thrown into an unclean place outside the town.
9 First Slide Here
10 Leviticus, Chapter 14, cont d. 41 He must have all the inside walls of the house scraped and the material that is scraped off dumped into an unclean place outside the town. 42 Then they are to take other stones to replace these and take new clay and plaster the house.
12 Leviticus, Chapter 14, cont d. 43 If the mildew reappears in the house after the stones have been torn out and the house scraped and plastered, 44 The priest is to go and examine it and, if the mildew has spread in the house, it is a destructive mildew; the house is unclean.
14 Leviticus, Chapter 14, cont d. 45 It must be torn down--its stones, timbers and all the plaster--and taken out of the town to an unclean place. 46 Moreover, whoever goes into the house during the time that he has quarantined it, becomes unclean until evening.
15 Leviticus, Chapter 14, cont d. 47 Likewise, whoever lies down in the house shall wash his clothes and whoever eats in the house shall wash his clothes.
16 Where Does Mold Come From? Mold is everywhere indoors and outdoors There are thousands of mold species Mold will grow wherever there is moisture, moderate temperature and a food source
17 What Mold Needs to Grow Food Source (Food is present everywhere, even in the air) Temperature degrees (The human comfort zone is in this temperature range) Moisture present as water or relative humidity above 60 % (This is the only controllable mold growth component)
19 If Mold Is Everywhere, What s The Problem? No federal or state standards for acceptable mold levels in buildings or homes Mold levels should be similar indoors and outdoors Same types of molds should be found indoors & outdoors
20 What is Mold Exposure? When moldy materials are damaged or disturbed, mold spores & products are released into the air. Some molds produce toxic chemicals called mycotoxins that may contaminate air in areas with no visible mold. People may inhale spores or spores may contact their skin
21 Does All Mold Exposure Make You Sick? Not all people exposed to mold will have health problems Health effects depend on types of mold, amounts of mold and susceptibility of the individual.
25 Missing (Health) Links It is undisputed that certain molds are harmful to human health. No clear dose-response data to assess potential for health hazard. No baseline environmental norms established. The battle rages on....
26 Water Intrusion Sources Building Envelope Leaks Plumbing Leaks HVAC condensation/leaks Wet Building Components Flooding
27 Avoiding Mold Growth Do not install wet or water-damaged building materials Control humidity when installing finish materials If a leak occurs, deal with it immediately
28 Water Damage Cleanup & Mold Prevention Within hours of clean water damage Discard damaged materials Books & papers (copy if valuable) Ceiling tiles Cellulose insulation Fiberglass insulation Drywall & gypsum board
29 Water Damage Cleanup & Mold Prevention Use water extraction vacuum, dehumidifier & fans to remove water & reduce humidity from upholstered furniture, carpet, backing, concrete & cinder block surfaces Wipe all non-porous, hard surfaces with water & mild detergent Remove water from wood surfaces use fans, dehumidifier & gentle heat to dry
30 Building Envelope Problems Improper flashing installation or lack of flashing Windows Doors Roof parapet walls Missing/clogged weep holes Lack of coordination between exterior cladding & window/door installation
31 Building Envelope Problems Improperly installed roof drains or scuppers Improperly installed moisture or vapor barrier Improper installation of exterior cladding 7 resultant cracking Improperly installed roofing materials
32 HVAC Problem Areas Improper test & balance Negative pressurization Improperly located air supply intakes Condensate pan or pipe leaks
33 Why Control Humidity? High humidity can support the growth of pathogenic or allergenic organisms.... Relative humidity in habitable spaces should be maintained between 30% and 60% to minimize mold growth
34 Hot/Humid Climates Dehumidify all incoming air Positive pressure to outside Vapor retarder on warm side Permeable interior wall coverings Drain the rain
35 Avoiding Mold Problems In Design & Construction IAQ issues should be part of building program and design. Controlling humidity should be a design criteria for HVAC system. Building components (e.g. windows, flashing, exterior skin) must be compatible & water resistant.
36 Design & Construction Criteria For Hot & Humid Climates Dehumidify all incoming air. Provide positive pressure to outside. Use permeable wall coverings on exterior walls. Drain the rain.
37 Avoiding Mold Problems In Design & Construction HVAC system should be tested and balanced at or before time that owner takes occupancy. Problems noted in test & balance report should be addressed promptly.
38 Molds Associated With Water Stachybotrys Aspergillus Penicillium Cladasporium Fusarium Intrusion
39 Molds that pose a threat to health aspergillus versicolor stachybotrus chartarum
40 How To Prevent Mold Growth Eliminate water sources Control humidity maintain below 60%
41 Mold Removal Methods ACGIH Standards United States Environmental Protection Agency Mold Remediation in Schools and Commercial Buildings (www.epa.gov/iaq) City of New York Department of Health Revised Guidelines
42 Mold Removal Methods Amount of mold & type of mold determine removal method Worst case requires workers to wear Tyvek suits, personal respirators Worst case mold removal done under asbestos-type methods Materials disposed of as hazardous waste
43 Mold Remediation Methods Goal Remove or clean contaminated materials to prevent fungi or dust from leaving work area Protect health of workers performing abatement Method depends on amount of contamination
44 Level I Small, I Isolated Areas Can be done by regular building maintenance staff with appropriate training Gloves & eye protection should be used Respiratory protection recommended Work area should be unoccupied; containment not required Contaminated materials removed in sealed plastic bags
45 Level I continuedi Work areas should be cleaned with damp cloth or mop and detergent solution. All areas should be left dry & visibly free from contamination & debris. There are no special requirements for disposal of moldy materials Use of biocides not recommended.
46 Level II Mid Mid-size Isolated Areas In addition to Level I requirements: Work area should be covered with plastic sheet (s) & sealed with tape to contain dust/debris Dust suppression methods recommended prior to remediation Work area should be HEPA vacuumed
47 Level III Large Isolated Area Health & Safety professional with experience in microbial investigations should be consulted for oversight Personnel should be trained in handling of hazardous material. Ventilation ducts/grills in work area should be sealed Level II requirements should be followed
48 Level IV Extensive Contamination contiguous square feet of contaminated area Professional personnel
49 Mold Cases = Big Dollars Martin County v. Centex-Rooney--$20 million Polk County Courthouse--$40 mllion Ballard case (Texas)--$32 million verdict against homeowners insurance company Hatley case (Arizona)--$4.2 million verdict against insurance company Anderson case (California) $18.5 million verdict against insurance company
50 Designers & Constructors Are Target Defendants Owners look to designers and constructors to advise them about potential mold problems. If water intrusion or humidity problems arise, owners look to designers and constructors to solve these problems or pay the cost to solve them.
51 Methods To Avoid Liability Contract waivers or disclaimers Written recommendations for inspection and for maintenance. If something doesn t smell right, don t ignore it!
52 Indicators Of A Mold Problem If you can see it or you can smell it, there is a problem! Investigate pipe leaks, condensation drips, roof leaks, window leaks. Investigate discolored areas on wall surfaces, ceilings, etc.
53 What Should You Do If You Think There Is A Significant Mold Problem? Detailed visual inspection by a trained professional of: Basement or crawl spaces Rooms with water or flood damage Window frames & carpets Ceiling tiles
54 What Should You Do Cont d. Any formerly damp material books, papers, wallpaper, insulation All HVAC components Greenhouses or water features Attics Other areas with water pools, kitchens, spas, laundry rooms, bathrooms
55 P.I. Home Inspection Services Anyone else is just looking around Mark Sylvester (630)
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