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Mold

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Seal HVAC Supplies and Returns. Negative Pressure with a HEPA Filter. Gloves ... Common Cleaning Chemicals. Phenols: Disinfectants. Corrosive to Rubber and ... – PowerPoint PPT presentation

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Title: Mold


1
Mold
  • Mitigation and Remediation

2
What is Mold?
  • Mold Mildew are the same thing
  • Fungi
  • Twenty five percent of Earths Biosphere
  • Odorless
  • Producer of Spores
  • Allergen
  • Possibly Toxic

3
Common Molds
  • Absidia
  • Alternaria
  • Ascomycetes
  • Aspergillus
  • Basidiomycetes
  • Cladosporium
  • Curvularia
  • Fusarium
  • Mucor
  • Penicillium
  • Pithomyces
  • Stachybotrys
  • Trichoderma
  • Ulocladium

4
Alternaria
5
Cladosporium
6
Aspergillus Niger
7
Stachybotrys
8
Mold on Wallsand Ceilings
9
WallpaperInsulation
10
When is Mold a Consideration?
  • When You See It
  • When You Smell It
  • If there has been significant water damage
  • When Health Symptoms exist

11
Symptoms of Exposure to Mold
  • Runny Nose
  • Headache
  • Difficulty Breathing
  • Depression
  • Irritability
  • Coughing
  • Loss of Energy
  • Skin eruptions
  • Bloodshot Eyes
  • Poor Appetite
  • Sinus Problems
  • Sore Throat

12
Ten Steps for Mold Mitigation
  • Stop the Intrusion of Water
  • Deprive Mold of Moisture Through Dehumidification
  • Filter the Spores out of the Air
  • Remove any Wet, Damaged or Infested Material
    using Containment When Appropriate

13
Ten Steps for Mold Mitigation
  • Make Sure What is Left is Dry
  • Treat Remaining Material for Latent Spores
  • Replace Damaged Material
  • Wipe Down all Hard Surfaces
  • Wash Soft Goods to Remove Spores
  • Vacuum using HEPA Vacuum

14
Sources of Water Intrusion
  • Breach of the Buildings Exterior
  • Wind Driven Through Otherwise Water-Tight Spaces
  • Flooding
  • Broken Pipes
  • Backed up Sewage

15
Mitigation Response
  • Repair Source of Intrusion
  • Caulk and Seal
  • Influence Source of Flooding
  • Repair/Install Backflow Device
  • Reshape Drainage

16
Exterior Drainage
17
Wall and Roof Construction
18
Dehumidifier Condensate Pump
19
Sources of Excess Moisture
  • Shrubbery/Landscaping
  • Mulch
  • Clothes dryer vents
  • Stove vents
  • Bathroom fans
  • Crawl Spaces
  • Ventilation
  • Plastic

20
Size of Mold Spores
Mold/Fungi                      Diameter   
 Filter Selection                         
       (microns)     
(MERV) Phialophora spp.                 
 1.5               13 Exophiala jeanse
lmei               2             
 13 Acremonium spp.                   2.5        
       9  Penicillium spp.            
       3.3               7 
Aspergillus spp.                 
 3.5               6 Absidia corymbif
era              3.8             
 6  Trichoderma spp.                  4.1        
       6  Stachybotrys spp.          
        5.7              6 
Mucor plumbeus                   7.5             
 6 Rhizopus stolonifer              
   8               6 Cladosporium sp
p.                   9              
6  Blastomyces dermatiitidis      14             
  6  Alternaria alternata            
 14.4               6 
21
MERV Microbial Efficiency Rated Value
22
HVAC Alternative Filter Systems
23
Stand Alone Filters
24
A Cautious Remediation Approach is Recommended
When
  • Toxic Mold is Identified or Suspected
  • Extensive Hidden Mold is expected
  • Chances of Mold Spores Becoming Airborne is High
  • When Sensitive Individuals are Present

25
EPA Infestation Chart
  • Small Less than 10 Square Feet
  • Medium From 10 to 100 Square Feet
  • Large Greater than 100 Square Feet

26
Personal Protection for Small Infestations (Less
than 10 sq. ft.)
  • Gloves
  • N-95 Respirator mask
  • Eye Protection

27
Limited Containment
  • Polyethylene sheeting floor to ceiling
  • Seal HVAC Supplies and Returns
  • Negative Pressure with a HEPA Filter
  • Gloves
  • N-95 Respirator or Half-Face HEPA Filter
  • Disposable Overalls
  • Eye Protection

28
Full Containment
  • Two layers of Plastic with Air Lock
  • Negative Pressure with HEPA Filter
  • Block Supply and Return Vents
  • Gloves
  • Disposable Full Body Clothing
  • Headgear
  • Foot Coverings
  • Full Face Respirator with HEPA Filter

29
Removing damaged material within 48 hours, before
it becomes infested, requires far less caution,
less work, and less expense.
30
Combining the rapid removal of wetted material
with the use of a de-humidifier and filters is an
important strategy to significantly mitigate
losses.
31
Steps During Restoration Phase
  • Dry
  • Treat
  • Restore/Upgrade
  • Wipe
  • Wash
  • Vacuum

32
Small Spore Vacuum Cleaners
33
Common Cleaning Chemicals
  • Phenols Disinfectants. Corrosive to Rubber and
    Some Plastics
  • Quaternary Ammonium Compounds Neutralized by
    Cotton and Charcoal
  • Halogens Bleach, Chlorine, Corrosive, Toxic
  • Alcohol Flammable Degrades Some Plastics

34
HVAC Systems
  • Ductwork
  • Insulation
  • Make Up Air
  • Pre-Conditioning
  • Filtration

35
Alternative Mold Treatments
  • Aerosols
  • Natural Extracts
  • Ozone
  • Ultraviolet Light

36
Safe Levels of Mold
  • EPA
  • CDC
  • California Safe Building Code
  • Canada
  • Others

37
Testing for Mold
  • Petri Dish Sampling
  • Air Samples
  • Slide Samples
  • Bulk Samples
  • Testing For Species

38
Teaching Mold Mitigation
  • Give Underlying Information
  • Explain Why Information is Relevant
  • Make Connections to Form New Beliefs
  • Use Multiple Channels of Communication
  • Use Anecdotes
  • Invoke Participation
  • Discuss In Emotionally Neutral Environment

39
Prepared by RAJohnsonCTP_at_msn.com
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