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Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   1
This presentation is the copyrighted property of Indoor Air QualitySolutions, IAQSUse of the presentation without the expr...
Before We BeginPlease Silence       Indoor Air Quality Solutions IAQS Copyrighted                                         ...
1         Introduction2         IICRC S-5003         Water Restoration Goals4         Categories of Water Contamination5  ...
Water Restoration• ANSI/IICRC S500-2006 Standard and  Reference Guide for Professional Water  Damage Restoration – 2006   ...
Water Restoration• The IICRC Standard for Professional Water  Damage Restoration (ANSI/IICRC S500-  2006) is a procedural ...
Water Restoration Goals• The goal of Restorative Structural Drying is  to save structural components including  walls, flo...
Water Restoration Goals• You will learn the value of a Balanced  Drying System to quickly and affordably dry  a property• ...
It all Starts with WaterLets Get Started      Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   9
Water exists in 3 forms:• Gas (water vapor)• Solid (ice)• Liquid           Indoor Air Quality Solutions IAQS Copyrighted  ...
Sources of Water• Exterior  Roof leaks  Flooding (@ surface)  Ground water (subsurface)  Pressurization  Diffusion of...
Sources of Water• Interior  Plumbing systems  Washing  Cooking  Respiration  Plants  Disasters             Indoor Ai...
Liquid Water• Can cause damage instantaneously• Damage increases as time elapses• As time elapses, water changes categorie...
Categories of Water• Category 1 - Clean Water  – Broken water pipes, rainwater, etc• Category 2 - Gray Water  – Contains c...
Categories of Water• Category 3 - Black Water  – Contains pathogenic agents  – Sewage, surface water flooding, pesticides ...
Categories of Water           • Category 1Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   16
Category 1 Water• Category 1 Water - That which is clean at the releasing source and does not pose a hazard if consumed by...
Categories of Water           • Category 2Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   18
Category 2 Water• Category 2 Water - That which begins with  some degree of contamination and could  cause  – sickness or ...
Categories of Water           • Category 3Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   20
Category 3 Water• Category 3 Water - That which is highly  contaminated and could cause death or  serious illness if consu...
Category 3 Water• According to the Institute of Inspection  Cleaning and Restoration Certification  (IICRC) standard for p...
Category 3 Water• The black water classification also includes  less contaminated water not treated in a  timely manner.• ...
Classes of Water Damage• Building Wetness involves One of Four  Classes of Water Damage• Determining the Class of water da...
Classes of Water Damage• Classes of Water – Don’t get the “Class of  Water” mixed up with the “3 Categories of  Water,” be...
Classes of Water Damage• Understanding the relative degree of  saturation affecting a wet building helps the  restorer det...
Classes of Water Damage• Unless adjusters are specially trained in the  science of building drying, more than likely they ...
Class I Water Damage• The least amount of water, absorption and  evaporation: Situations that affect the least  amount of ...
Class II Water Damage• Large amount of water, absorption and evaporation:  Situations that affect an entire room or many r...
Class III Water Damage• The greatest amount of water, absorption and  evaporation: Situations that affect an entire room o...
Class IV Water Damage• Specialty situations where wet materials having low  permeance and porosity.• Deep pockets of satur...
Contaminated                                Water Restoration• Dispose  – carpet cushion  – absorbent stuffed fabrics  – S...
Contaminated                                 Water Restoration• Discard carpet saturated with Category 3  water• Category ...
Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   34
Review: Categories of                      Water Damage   • Category 1: Clean Water   • Category 2: Gray Water   • Categor...
Categories of                                Water Damage• Category 1: Clean Water• Category 2: Gray Water (rain, clean wa...
Category 3 Water• Following a Category 3 water loss, a State  Licensed Professional Restoration  Business will use proper ...
Time is CriticalIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   38
Water damage in a             structure exists in 3 forms:         1. Free Water         2. Absorbed Water         3. Adso...
Free Water• Refers to standing water• Easiest to remove           Indoor Air Quality Solutions IAQS Copyrighted   Presenta...
Absorbed Water• Refers to water that has become part of the  structure due to capillary action• Requires a building to nee...
Adsorbed Water• Refers to the chemically bonded water  found naturally in materials• Removal of adsorbed water damages the...
What is Drying?• Drying is a science, based on established  laws of thermodynamics and laws of gases• Basically, all state...
Removing Water from                                     the Structure• Provide a condition in which water wants to  migrat...
How it all Works……• Liquid water will flow, seeking its own level  (more to less)• Water vapor will move, from higher pres...
How it all Works……Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   46
The Psychometric Chart• To properly evaluate temperature, relative  humidity, and grains per pound (or  g/kg), restorers m...
The Psychometric Chart• These two readings will establish the  capacity of the air mass (temperature) to  hold moisture an...
The Psychometric Chart• The psychometric chart will also provide the  indoor environments dew point.• The dew point is the...
The Psychometric ChartIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   50
Psychometric ChartIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   51
Just a Simple Little Chart                                               Right?• Maybe it would be better to trust a Train...
Water Damaged                               Building Materials• At the surface of the material, Water  Activity occurs  – ...
Water Activity           Water Activity (aw) =   Equilibrium relative humidity of the           substrate divided by 100• ...
Removing Water from                               Saturated Materials1. Fully assess and measure the area of   water damag...
Drying Tools• Dehumidifiers- manipulating the specific  humidity to allow the air to accept  additional moisture in the fo...
Dehumidifiers• Refrigerant• Desiccant          Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   57
Refrigerant Dehumidifier• Most efficient at optimum  temperature• Power requirements can  become prohibitive• Require more...
Desiccant Dehumidifier• Use silica gel to attract the moisture out of  the air• Purges moisture from the building under  p...
Desiccant DehumidifierIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   60
When is Too Much                           Too MuchIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011 ...
When is Too Much                           Too MuchIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011 ...
Basic Guidelines1. Amount of drying equipment used is   based on the volume of air and air   exchanges2. It takes a Traine...
The “Air Exchange” rule• Dehumidification processes the air• When all of the air in a building or room has  been processed...
The “Air Exchange” ruleIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   65
How Much Equipment is                              Really Necessary?• The amount of water in a structure  determines the a...
Easy…..Right ???• Therefore, if the cubic foot volume of the air  in a building is determined, then this amount  can be di...
Simple as pi….π• If that sum is divided by 60, then the air  exchanges per hour can be determined.            Any Question...
Hire ONLY Trained &                             Licensed Professionals• Improper water restoration practices have  far rea...
Here’s the Math………..Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   70
Example:• Total length X width X height = 20,000 c/f.• Divided by a 200 cfm Dh. = 100 minutes to  complete an air exchange...
Got it …Right ????Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   72
Just Hire a Trained &                              Licensed Professional• Untrained restoration companies will  take longe...
How many air exchanges?• Typical standard floor saturation requires 1  air exchange per hour• Lower walls wet from wicking...
How many air exchanges?• Air exchanges establish the optimum  conditions for drying• Once optimum conditions are met, then...
How many air exchanges?• Therefore, adding more dehumidifiers can  not lower the Rh beyond what is actually  possible• Doi...
How many air movers? • air movers speed up the drying process   nominally• Air movement increases the   amount of water ac...
Ask the                               Trained Professional?• Most in our industry agree that three air  movers per dehumid...
Hire ONLY Trained &                               Licensed Professionals• Its worth it!• Trained professionals will save  ...
Additional Drying                             TechniquesFor WallsCeilingsCabinetsFloorsIndoor Air Quality Solutions IA...
The Inject-a-Dry System• Forces dry air into interstitial wall & ceiling  cavities and displaces the moisture by  purging•...
The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   82
The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   83
The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   84
The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   85
The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   86
When air movers should not                                           be used• When air movement could create bioaerosols• ...
IICRC S500• “Standard and Reference Guide for  Professional Water Damage Restoration”• Institute of Inspection,Cleaning an...
Hire Trained &                              Licensed Professionals• Trained Professionals will always save you  both Time ...
Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   90
Indoor Air Quality Solutions IAQS Copyrighted   Presentation 7/24/2011   91
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Water Restoration and Structural Drying Indoor Air Quality Solutions, IAQS - John Lapotaire, CIEC

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The water restoration presentation is a review of Water Restoration and Structural Drying.

The presentation helps seasoned restoration professionals review the S-500 and new restoration technicians learn and understand the process of restorative structural drying, the different categories of water according to the ANSI approved IICRC S-500, as well as the benefits of hiring IICRC trained professionals.

Indoor Air Quality Solutions IAQS
www.FloridaIAQ.com

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Water Restoration and Structural Drying Indoor Air Quality Solutions, IAQS - John Lapotaire, CIEC

  1. 1. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 1
  2. 2. This presentation is the copyrighted property of Indoor Air QualitySolutions, IAQSUse of the presentation without the expressed written consent ofIndoor Air Quality Solutions, IAQS is prohibited. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 2
  3. 3. Before We BeginPlease Silence Indoor Air Quality Solutions IAQS Copyrighted Your Phones Presentation 7/24/2011 3
  4. 4. 1 Introduction2 IICRC S-5003 Water Restoration Goals4 Categories of Water Contamination5 What is Restorative Drying?6 Restorative Drying Tools7 The Value of a Trained Professional Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 4
  5. 5. Water Restoration• ANSI/IICRC S500-2006 Standard and Reference Guide for Professional Water Damage Restoration – 2006 Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 5
  6. 6. Water Restoration• The IICRC Standard for Professional Water Damage Restoration (ANSI/IICRC S500- 2006) is a procedural standard.• It is based on reliable restoration principles, research and practical experience. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 6
  7. 7. Water Restoration Goals• The goal of Restorative Structural Drying is to save structural components including walls, flooring (not just carpeting!), as well as contents.• You will learn how the proper management of the variables of airflow, temperature, and humidity can lead to reduced costs of property losses. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 7
  8. 8. Water Restoration Goals• You will learn the value of a Balanced Drying System to quickly and affordably dry a property• You will learn why a delayed response of just a few days can change the scope of structural drying as the water loss categories change. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 8
  9. 9. It all Starts with WaterLets Get Started Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 9
  10. 10. Water exists in 3 forms:• Gas (water vapor)• Solid (ice)• Liquid Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 10
  11. 11. Sources of Water• Exterior Roof leaks Flooding (@ surface) Ground water (subsurface) Pressurization Diffusion of vapor Infiltration of vapor Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 11
  12. 12. Sources of Water• Interior Plumbing systems Washing Cooking Respiration Plants Disasters Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 12
  13. 13. Liquid Water• Can cause damage instantaneously• Damage increases as time elapses• As time elapses, water changes categories Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 13
  14. 14. Categories of Water• Category 1 - Clean Water – Broken water pipes, rainwater, etc• Category 2 - Gray Water – Contains contamination & microorganisms – Toilets with urine, sump pumps, dishwashers Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 14
  15. 15. Categories of Water• Category 3 - Black Water – Contains pathogenic agents – Sewage, surface water flooding, pesticides Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 15
  16. 16. Categories of Water • Category 1Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 16
  17. 17. Category 1 Water• Category 1 Water - That which is clean at the releasing source and does not pose a hazard if consumed by humans. – Category 1 water may become progressively contaminated as it mixes with soils on or within floor coverings or building assemblies (walls, decking, subflooring). – Time and temperature, which promote the growth and amplification of microorganisms in water can cause Category 1 water to degrade. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 17
  18. 18. Categories of Water • Category 2Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 18
  19. 19. Category 2 Water• Category 2 Water - That which begins with some degree of contamination and could cause – sickness or discomfort if consumed by humans. As with Category 1 water, time and temperature can cause Category 2 water to become progressively more contaminated. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 19
  20. 20. Categories of Water • Category 3Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 20
  21. 21. Category 3 Water• Category 3 Water - That which is highly contaminated and could cause death or serious illness if consumed by humans. – Examples: sewage, rising flood water from rivers and streams, ground surface water flowing horizontally into homes. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 21
  22. 22. Category 3 Water• According to the Institute of Inspection Cleaning and Restoration Certification (IICRC) standard for professional water damage restoration (ANSI/IICRC S500-2006), Category 3 water damage (often called black water) is water damage to a structure where the origin is unsanitary or potentially infectious to humans. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 22
  23. 23. Category 3 Water• The black water classification also includes less contaminated water not treated in a timely manner.• Category 3 water intrusion can be subdivided into three levels that will help the professional restoration business process the contamination efficiently. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 23
  24. 24. Classes of Water Damage• Building Wetness involves One of Four Classes of Water Damage• Determining the Class of water damage is an essential part of assessing the procedures necessary to manage how the drying phase job will proceed. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 24
  25. 25. Classes of Water Damage• Classes of Water – Don’t get the “Class of Water” mixed up with the “3 Categories of Water,” because they are not related.• Determining the Class of Water in a flooded building directly relates to the initial structural dehumidification requirements.• The Class of Water can be either Category 2 or 3 Water. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 25
  26. 26. Classes of Water Damage• Understanding the relative degree of saturation affecting a wet building helps the restorer determine the approximate amount of dehumidification necessary for an efficient drying system. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 26
  27. 27. Classes of Water Damage• Unless adjusters are specially trained in the science of building drying, more than likely they will not have the skills to properly assess the extent of building saturation and what is required to bring the building back to a pre-loss condition before secondary and ensuing damage occurs.• However, adjusters are expected to be familiar with the four Classes of Water Damage Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 27
  28. 28. Class I Water Damage• The least amount of water, absorption and evaporation: Situations that affect the least amount of building materials in a room or area. Generally, only surface water is present where very little or no carpet and pad are wet.• A spill on a hardwood floor where water damage is minimal; a concrete slab has a small amount of standing water on it; a wet area on a continuous sheet vinyl, stone or marble floor. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 28
  29. 29. Class II Water Damage• Large amount of water, absorption and evaporation: Situations that affect an entire room or many rooms: Water has absorbed into building materials including carpet and pad and walls that wicked up water less than 24-inches.• Water has migrated across a large area of flooring and has absorbed into walls and framing; water saturated subflooring, walls and insulation; water migrated under vinyl, tile or hardwood flooring; water is behind cabinets. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 29
  30. 30. Class III Water Damage• The greatest amount of water, absorption and evaporation: Situations that affect an entire room or many rooms from water than may have come from overhead, such as a roof and ceiling leak, from storms or pipe break.• Virtually the entire interior of an affected room or building is wet including upper walls and ceiling. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 30
  31. 31. Class IV Water Damage• Specialty situations where wet materials having low permeance and porosity.• Deep pockets of saturation exist including reservoirs of trapped moisture.• Note: Determining the Class of Water is an essential part of calculating the amount of initial air movement and dehumidification capacity required to manage the anticipated moisture saturation condition. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 31
  32. 32. Contaminated Water Restoration• Dispose – carpet cushion – absorbent stuffed fabrics – Saturated absorbent materials • Ceiling tile, dry wall, paper, etc.• Evaluate structural materials for degree of contamination and physical damage Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 32
  33. 33. Contaminated Water Restoration• Discard carpet saturated with Category 3 water• Category 2 water carpet contamination may be cleaned with hot water extraction and biocide• Remove floor if water reached subflooring – Subflooring must be cleaned, disinfected, dried Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 33
  34. 34. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 34
  35. 35. Review: Categories of Water Damage • Category 1: Clean Water • Category 2: Gray Water • Category 3: Black WaterIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 35
  36. 36. Categories of Water Damage• Category 1: Clean Water• Category 2: Gray Water (rain, clean water in dirty carpets, laundry water, water migrating through building envelope)• Category 3: Black Water (flooding from street or river, sewage [bacterial] Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 36
  37. 37. Category 3 Water• Following a Category 3 water loss, a State Licensed Professional Restoration Business will use proper – procedures, techniques, products, and equipment – to establish a Balanced Drying System to help restore property to its pre-loss condition safely and as rapidly as possible Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 37
  38. 38. Time is CriticalIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 38
  39. 39. Water damage in a structure exists in 3 forms: 1. Free Water 2. Absorbed Water 3. Adsorbed WaterIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 39
  40. 40. Free Water• Refers to standing water• Easiest to remove Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 40
  41. 41. Absorbed Water• Refers to water that has become part of the structure due to capillary action• Requires a building to need supplemental drying• Can only be removed by (1)demolition of saturated materials (2)converting the liquid into a vapor Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 41
  42. 42. Adsorbed Water• Refers to the chemically bonded water found naturally in materials• Removal of adsorbed water damages the material. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 42
  43. 43. What is Drying?• Drying is a science, based on established laws of thermodynamics and laws of gases• Basically, all states of water seek equilibrium – More to Less – High to Low – Hot to Cold Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 43
  44. 44. Removing Water from the Structure• Provide a condition in which water wants to migrate from one area (where you want to get rid of it) to an area where it causes no harm• Provide tools to change the condition• Fully understand the materials and area of water damage Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 44
  45. 45. How it all Works……• Liquid water will flow, seeking its own level (more to less)• Water vapor will move, from higher pressure to lower pressure• If water can not flow out of building (drained), then it has to be converted to a vapor (evaporation) Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 45
  46. 46. How it all Works……Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 46
  47. 47. The Psychometric Chart• To properly evaluate temperature, relative humidity, and grains per pound (or g/kg), restorers must use a psychometric chart.• A trained and licensed restoration professional will collect temperature and humidity of the property using a thermal hygrometer. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 47
  48. 48. The Psychometric Chart• These two readings will establish the capacity of the air mass (temperature) to hold moisture and the relative amount of moisture in the air (relative humidity).• Employing these two readings the trained professional can then use the psychometric chart to calculate the grains per pound of water vapor in the air. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 48
  49. 49. The Psychometric Chart• The psychometric chart will also provide the indoor environments dew point.• The dew point is the temperature at which the air becomes saturated with moisture vapor and can hold no more water vapor.• Calculating the dew point temperature is important when monitoring the drying cycle of a structure and wet building materials. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 49
  50. 50. The Psychometric ChartIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 50
  51. 51. Psychometric ChartIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 51
  52. 52. Just a Simple Little Chart Right?• Maybe it would be better to trust a Trained and Licensed Professional to run the calculations. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 52
  53. 53. Water Damaged Building Materials• At the surface of the material, Water Activity occurs – (conversion of liquid to vapor-evaporation)• The further that a liquid has to migrate to the surface, the longer it takes to dry• The permeability of a material dictates the speed of migration• Water can travel through a material as vapor Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 53
  54. 54. Water Activity Water Activity (aw) = Equilibrium relative humidity of the substrate divided by 100• All building materials have different rates in which water vapor moves within them• Water Activity at the surface determines the evaporation rate. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 54
  55. 55. Removing Water from Saturated Materials1. Fully assess and measure the area of water damage2. Create a condition in which water wants to migrate from one area to an area where it causes no harm3. Provide tools to change the condition Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 55
  56. 56. Drying Tools• Dehumidifiers- manipulating the specific humidity to allow the air to accept additional moisture in the form of vapor• air movers- prevent “layering” of water vapor due to weight; and they transport vapor away from the surface to increase conversion rates. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 56
  57. 57. Dehumidifiers• Refrigerant• Desiccant Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 57
  58. 58. Refrigerant Dehumidifier• Most efficient at optimum temperature• Power requirements can become prohibitive• Require more monitoring (labor hours) Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 58
  59. 59. Desiccant Dehumidifier• Use silica gel to attract the moisture out of the air• Purges moisture from the building under positive pressure - can potentially distribute contaminates Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 59
  60. 60. Desiccant DehumidifierIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 60
  61. 61. When is Too Much Too MuchIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 61
  62. 62. When is Too Much Too MuchIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 62
  63. 63. Basic Guidelines1. Amount of drying equipment used is based on the volume of air and air exchanges2. It takes a Trained Professional to understand the drying process3. A well planned drying plan will quickly dry the property and save everyone both time and a pile of money Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 63
  64. 64. The “Air Exchange” rule• Dehumidification processes the air• When all of the air in a building or room has been processed by the dehumidifier, then all the air has been exchanged one time through the machine.• Dehumidifiers are rated on how much air they process per minute (cfm) Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 64
  65. 65. The “Air Exchange” ruleIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 65
  66. 66. How Much Equipment is Really Necessary?• The amount of water in a structure determines the amount of drying equipment needed to process the air Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 66
  67. 67. Easy…..Right ???• Therefore, if the cubic foot volume of the air in a building is determined, then this amount can be divided by the number of cfm that the dehumidifier can process. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 67
  68. 68. Simple as pi….π• If that sum is divided by 60, then the air exchanges per hour can be determined. Any Questions so far? Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 68
  69. 69. Hire ONLY Trained & Licensed Professionals• Improper water restoration practices have far reaching consequences for Florida property owners.• Trained professionals know the essential methods for correct restoration of flood damaged properties. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 69
  70. 70. Here’s the Math………..Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 70
  71. 71. Example:• Total length X width X height = 20,000 c/f.• Divided by a 200 cfm Dh. = 100 minutes to complete an air exchange• Divided by 60 minutes = 1.67 air exchanges per hour• 1.67 X 2 =3.34- or 2 exchanges would require 2-200 cfm dehumidifiers. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 71
  72. 72. Got it …Right ????Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 72
  73. 73. Just Hire a Trained & Licensed Professional• Untrained restoration companies will take longer to complete a drying job.• Use more equipment to complete a drying job.• Cost you more time and money.• Trained professionals will get it Dry quicker and more affordably EVERYTIME! Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 73
  74. 74. How many air exchanges?• Typical standard floor saturation requires 1 air exchange per hour• Lower walls wet from wicking and bases of personal property wet requires 2 air exchanges per hour• Walls & ceilings wet -requires 3 air exchanges per hour Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 74
  75. 75. How many air exchanges?• Air exchanges establish the optimum conditions for drying• Once optimum conditions are met, then additional air exchanges accomplish nothing• Because of the physical limitations of water activity & evaporation, 3 air exchanges are the maximum Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 75
  76. 76. How many air exchanges?• Therefore, adding more dehumidifiers can not lower the Rh beyond what is actually possible• Doing the Math lowers the total cost of the job $$$$• Saving everyone money! Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 76
  77. 77. How many air movers? • air movers speed up the drying process nominally• Air movement increases the amount of water activity that can occur• Helps distribute processed air throughout the structure• So how many do you need??? Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 77
  78. 78. Ask the Trained Professional?• Most in our industry agree that three air movers per dehumidifier are sufficient• air movers can be used to dry “from the wall/ceiling cavities” out Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 78
  79. 79. Hire ONLY Trained & Licensed Professionals• Its worth it!• Trained professionals will save you time and money on the restoration of all your flood damaged properties. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 79
  80. 80. Additional Drying TechniquesFor WallsCeilingsCabinetsFloorsIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 80
  81. 81. The Inject-a-Dry System• Forces dry air into interstitial wall & ceiling cavities and displaces the moisture by purging• Excellent for wallpapered walls because it dries from the inside out• Really isn’t needed in most applications Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 81
  82. 82. The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 82
  83. 83. The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 83
  84. 84. The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 84
  85. 85. The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 85
  86. 86. The Inject-a-Dry SystemIndoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 86
  87. 87. When air movers should not be used• When air movement could create bioaerosols• Category 3 Sewage- transporting pathogens into the air stream• Mold- contaminating the indoor air quality Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 87
  88. 88. IICRC S500• “Standard and Reference Guide for Professional Water Damage Restoration”• Institute of Inspection,Cleaning and Restoration Certification (IICRC)• www.iicrc.org Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 88
  89. 89. Hire Trained & Licensed Professionals• Trained Professionals will always save you both Time and Money.• Microshield will help write a Balanced Drying System for all your water loss properties• Which will allow the Trained Restoration Professional to quickly return the property to its pre-loss condition Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 89
  90. 90. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 90
  91. 91. Indoor Air Quality Solutions IAQS Copyrighted Presentation 7/24/2011 91

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