Rapid Structural Drying

The Learning Curve

Unconscious Incompetent

Conscious Incompetent

Unconscious Competent

Conscious Competent

Quotes for the Day

“Learning is what you remember after you’ve forgotten all you heard.”

“Credibility is like credit once it’s lost it is difficult to restore.”

Rapid Structural DryingContinuing Education Instructor:

Bruce Vogt

• IICRC Certified in:• Water Damage Restoration• Fire & Smoke Restoration

• Carpet Cleaning• Odor Control

• Member of National Speakers Association

Bruce Vogt• Consultant to U.S. Military• Consultant to Hotel/Motel

• Consultant to Manufacturing Facilities, Plants, Factories, Warehouses

• Hospitals• Smithsonian Institute

• “Marketing By Delight”

Objectives• Provide licensee with information they can use to protect the health, welfare and safety of

the policyholder.

• Provide licensee with information they can use to reduce the cost of the loss.

Objectives• Review Current State of the Restoration Industry

• Review Industry Standards • Review Principles of Drying

• Review Psychrometry – The Science of Drying• Review Documentation

• Review Benefits of Rapid Structural Drying

Brief History • Initially water damage restoration was performed by carpet

cleaning companies. • The primary focus on drying the carpet.

• Average residential job took 5 – 6 days to dry and put back together.

• Specialized equipment and training was first introduced to industry in the late 70’s.

• There was little concern about mold. We thought we could spray biocide and mold would not be a problem.

Insurance Claim TypesInsurance Claim Types

35%

28%

20%

5%

12%

0%

5%

10%

15%

20%

25%

30%

35%

Fire Water Hail Theft Other

Insurance C laim s - Trade Area $ Spent

0

10

20

30

40

50

60

70

% 15 2 3 5 65 2 3 2.5 3

R oofs S iding Paint Wall c ove r Flooring Framing Door/W in Drywall Othe r

Where Does Water Damage Come From?Where Does Water Damage Come From?

Rain Snow

Wind-driven rain or snow

Air movement

Flooding

Ground water

Basement/crawlspace

Vapor diffusion

Condensation

Capillary action

Humidification

Cooling coil bypass

Water spills, leaks, and other internal sources

Adapted from ACGIH Bioaerosols: Assessment and Control, Fig. 10.2

IICRC S500 Water

Damage Standard

S500 provides a procedural standard for use by those

involved in the water damage restoration industry.

The Standard is technically consistent with the knowledge

available at the publication date.

To Obtain A Copy Contact The IICRC At: 360-693-5675

IICRC S500- 1994

• First water damage standard.• Total Pages - 75• Introduced categories of water

damage.• Specified one airmover per

400-500 square feet. • No specification for

dehumidifier placement.• Recommended biocides for all

jobs.

IICRC S500 - 1999

• Total Pages -100• Provided guidelines for cushion

replacement.• Provided consideration for biocide

application.• More details on the potential of

microorganisms.• No equipment placement

recommendations.• More emphasis on health & safety.

IICRC S500-2006

• Total Pages-357• Classes of Water Damage

• Calculations for Dehumidifiers• One Airmover for every 10 to 16

linear feet. • Heat Drying

• Large Loss & Cat Losses• W.E.T Study

IICRC S520Mold

Remediation Standard

Certification Card

Important Definitions

• Shall • When the term shall is used, it means that the

practice or procedure is mandatory due to natural law or regulatory requirement, including occupational, public health and other relevant laws, rules or regulations, and is therefore a component of the accepted “standard of care” to be followed.


• Should • When the term should is used, it means

that the practice or procedure is a component of the accepted “standard of care” to be followed, while not mandatory by regulatory requirements.


• Recommended • When the term recommended is used, it means

that the practice or procedure is advised or suggested, but is not a component of the accepted “standard of care” to be followed.


• May • When the term may is used in the S500 it signifies

permission expressed by the document, and means that a referenced practice or procedure is permissible within the limits of this document, but is not a component of the accepted “standard of care” to be followed.


• Can • When the term can is used in the S500, it

signifies an ability or possibility open to a user of the document, and it means that a referenced practice or procedure is possible or capable of application, but is not a component of the accepted “standard of care” to be followed.

Categories of Water in Water Damage

• Category 1 - Clean Water• Clean water originates from a

source that does not pose substantial harm to humans.


• Category 2 - Gray Water

• Gray water contains a significant level of contamination and has the potential to cause discomfort or sickness if consumed by or exposed to humans.


• Category 3 – Black Water

• Contains pathogenic agents and is grossly unsanitary.

• Sewage and all forms of flooding from sea water, ground surface water and rising water from rivers & streams.

• Toilet back flows that originate from beyond the toilet trap are considered black water.

Effects of

Time&

Temperature

After 48 hours category goes to 2 then to 3

# of Days

Available Training

• Institute Of Inspection Cleaning & Restoration Certification (IICRC)

• 2-Day Water Restoration Technician Course

• Test Administered For Certification as a Water Restoration Technician

• Contact The IICRC @ 360-693-5675 Or www.IICRC.org

• Must Maintain Certification With CEC Credits

Water Loss Specialist• Requires tenure in the industry.• Must show proof of insurance, membership w/

Better Business Bureau, etc.. • Must attend 1 week extensive training course on

all aspects of drying, commercial, mold, building science, legal aspects, etc..

• Write research paper on assigned subject.• Write formal report on a restoration project.• Course currently only offered once a year.• Contact ASCR for more Information: • (800) 272-7012 or www.ASCR.org

Certified Restorer

• Requires tenure in the industry and you meet certain requirements.

• Must show proof of insurance, membership with Better Business Bureau, etc..

• Must attend 1 week extensive training course on all aspects of restoration.

• Must write a formal report on a restoration project or a thesis on a restoration subject.

• Contact ASCR For more Information 800-272-7012 or www.ASCR.org

Questions To Ask Mitigation Contractor

• Are You Certified In Water Damage Restoration?• Can You Show Me Your ID Card?

• Are Your Technicians Certified In Water Damage Restoration?

• Is Your Firm Certified?• Does Your Company Follow The Standards

Outlined In IICRC S500?

Technicians Should Ask These Questions

• What Is Wet?

• How Wet Is It?

• What Is the Best Way to Dry It?

Moisture Detection Equipment

• Hydro-Sensor

• Used to determine the exact perimeter of damage to carpet

and cushion.

Moisture Meters

Moisture MetersUsed To Measure Moisture Contained In Structural

Materials

• Non-Penetrating • Used to detect moisture under sheet vinyl,

wood, ceramic tile, etc.

• Penetrating• Used to detect moisture inside materials,

examples, sub-floors, hardwood floors, etc.

Penetrating Moisture Meter Non-Penetrating Moisture Meter

Moisture Meter Scale

• Principle 1 - Excess Water Removal• Thorough extraction not only contains

damage, it considerably speeds up the drying process.

• Removing water physically can be 500 times more efficient than removing water by

evaporation and dehumidification.

Principles of Drying

Excess Water Removal

• Absorb water that’s standing on contents and fixtures by mopping or soaking up with

absorbent cloths.• Drain water out of ceiling or wall cavities.

• Extract water from floor coverings. • Pump standing water from below-grade areas

(i.e. basements, crawlspaces).

Portable vs. Truck Mount

THEN NOW

ONLY Truckmount Should Be Used On Water Damage Loss

• TMs are much more efficient than portable units.• TMs use 2” hoses. Portables use 1.5” hoses which

provide 45% less airflow. • TM’s have 60+ gallons of recovery. Portables have

5 to 10 gallons of recovery.• 500 times easier to physically remove the water

than evaporate & dehumidify it.

Extraction Updates

• For every 50 ft of hose you lose 50 CFM• Dual wands reduce the CFM 50%

• Keep hoses straight• Make a 25 ft length to use with a 50 ft

length• Unit must be 2” all the way through

CARPET WET TESTING CONCLUSIONS

• Wet carpet experiences more adhesive strength loss than previously thought by the industry. Instead of 30-50% loss, it

appears to be more like 70-83%.• Based on samples tested after being wet for 48 hours, the

longer the carpet dries, the stronger the adhesive becomes – even to the point that it exceeds the original dry sample.

• Surface drying requires more carefully controlled conditions and provides cost and productivity advantages.

Carpet wand Static placement tool

Static Placement Tool

HYDRO – XTREME WEIGHTED ROLLER

Extraction Efficiency

• Pad Test – detach carpet from wall in one corner of affected area after extraction and squeeze the pad with

your hand. Extraction is complete when no water can be squeezed out of pad.

• Different carpets & pads release water differently. For example, cut pile carpet releases water easier than Berber

carpet.

• Carpet & pad are very porous. Once properly extracted they dry very easily.

Water Claw Static Placement Tool

Extraction Tool

Lbs./ft.In pad 3’ x 3’

Formula to get gallons =

___lbs x .96 ÷ 8 = ___gallons

Gal. left100Sq yard

Light wand w/Truck mount

6 lbs. 6 x .96 ÷ 8 = .72 gals. 72 gals.

Flood-Pro 3.5 lbs.

3.5 x .96 ÷ 8 = .42 gals.

42 gals.

Water Claw 3 lbs. 3 x .96 ÷ 8 = .36 gals. 36 gals.

Hydro X 2 lbs. 2 x .96 ÷ 8 = .24 gals. 24 gals.

Extraction Efficiency

Note – Light wand w/truckmount leaves 48 gallons more water in 100 sq. yd. of carpet cushion than Hydro X.


Principle 2 - evaporation• Once excess water is removed, the

remaining water must be changed from a liquid to a vapor through

promotion of evaporation.

AIR FLOW! AIR FLOW! AIR FLOW!

Benefits of Effective Air Movement

• After a thorough extraction the length of time required to dry wet materials is determined

by the rate of evaporation.

• Accelerated rates of evaporation (and faster drying rates) are gained by increased airflow combined with adequate humidity reduction.

Air MoversTHEN NOW

2.5 amps 2300 CFM4.7 amps 1150 CFM

New Style Air MoversMove 45% More Air And Draw Less Amps

How Many Air Movers Should Be Used?

• Past Trends

• Air movers are placed in corners, usually under the carpet.

• Carpet is floated on top of cushion of air.

How Many Air MoversShould Be Used?

• As much furniture as possible needs to be removed from the room to get maximum float.

• Usually one air mover per 100 to 150 square ft is used.

• Should be monitored daily.

Disadvantages of Floating Carpet

• Carpet is 70% weaker when wet than dry.

• Most all furniture has to be removed from the room.

• The room can’t be used.

• Seams have to be cut.

• Carpet has to be reinstalled.


Current Trend /Rapid Drying

• On an average residential water loss the industry consensus is one air mover per 10 – 14 linear feet

of wall space. • Air movers should be positioned at 45° angle to

and touching the wall.


• One air mover in the center of the room facing down at the carpet.

• Air movers should be moved a minimum of once daily to ensure sufficient airflow

over wet surfaces.

Rapid Structural Drying Setup

When Should Carpet Cushion Be Replaced?

S500 says carpet cushion must be replaced under the following conditions:• Cushion materials are organic (hair, jute)

• Cushion has remained saturated for more than 48 hours• Cushion is saturated with either category 2 or 3 water

• Cushion has a non-porous skin

When Can Carpet Cushion Be Restored?

• Water originates from a category 1 water source

• Cushion has a porous skin• Cushion has been wet less than 48 hours

When Can Carpet Cushion Be Restored?

• Cushion drying is cost effective• Equipment is available for thorough

extraction and rapid drying

Advantages of Drying Cushion

• Job processes quicker

• Minimum furniture moving

• Less labor & material cost

• Less stress on carpet

• Less inconvenience for homeowner


Principle 3 - Dehumidification• Once moisture is evaporated into the air,

it must be removed through dehumidification.

• The lower the grains of moisture the faster the structure will dry.

What Do Dehumidifiers Do?

• Dehumidifiers remove the excess moisture put into the air from the evaporation created when we dry wet

materials (usually with air movers). • Dehumidifiers create grain depression. Grain depression is an industry term used to quantify the

difference in specific humidity of air entering a dehumidifier and the specific humidity leaving the

dehumidifier.

Dehumidifiers - Two types:

1. Refrigerant dehumidifiers:

* refrigerant - most common, most energy efficient

* desiccant

Operate on the principle of condensation

Work best in high temperature/humidity situations

Manufacturer-rated in pints removed in 24 hrs @ 90°F/27°C, 95% RH

Ex.: 200 pt. capacity ÷ 8 pts/gal = 25 gal/day (15 gal/day AHAM)

AHAM-rated in pints removed in 24 hrs @ 80°F/27°C, 60% RH



* refrigerant - the most common* desiccant

Perate on the principle of condensation

Work best in high temperature/humidity situations

Rated according to pints removed in 24 hrs @ 90°F/27°C, 95% RH

Example: 200 pint capacity ÷ 8 pts/gal = 25 gallons per day +

There are 3 general categories of refrigerant dehumidifiers:

conventional - lose efficiency below 68°F/20°C 60% RH, 55-60 gpp



* refrigerant - the most common* desiccant

operate on the principle of condensation

work best in high temperature/humidity situations

rated according to pints removed in 24 hrs @ 90°F/27°C, 95% RH

example: 200 pint capacity ÷ 8 pts/gal = 25 gallons per day +

there are 3 general categories of refrigerant dehumidifiers:

conventional - lose efficiency below 68°F/20°C 60% RH, 55-60 gpp

heat pipe - lose efficiency below 33°F/0°C 40% RH, 55-60 gpp

low grain - lose efficiency below 33°F/0°C 40% RH, 32-35 gpp

Refrigerant Dehumidifiers(Conventional)

• Works on the principle of condensation.

• Rated by the association of home appliance manufacturers (AHAM) based on pints of moisture removed from air (@ 80°F/60%

RH) in a 24 hour period.

• Begins to lose efficiency below 60% RH/55-60 gpp.

Refrigerant Dehumidifiers(Low Grain)

• Works on the principle of condensation.

• AHAM Rated 80°f/ 60% Rh• Different configuration than

conventional refrigerants.• Begin to loose efficiency below

32-35 GPP.

Desiccant Dehumidifiers

• Works on the principle of adsorbents.

• More expensive to purchase and to operate.

• Can reduce specific humidity to 10 - 15 gpp.

• Recommended in low temperature situations, and for drying dense

materials.

SummarySummaryOperates Performance

Types Down To Reduced

home-type refrigerant 68°F/20°C below 60% RH/55-60 gpp

conventional 33°F/1°C below 40% RH/55-60 gppRefrigerant (heat pipe)

low-grain ref. (LGR) 33°F/0°C below 40% RH/32-35 gpp

desiccant (silica gel) <32°F/0°C below 10% RH/10-15 gpp

Determine Class of Water Damage to Calculate Dehumidifier

Requirements

Class 1• Slow rate of evaporation.

• Water losses that affect only part of a room; or losses with low porosity materials. (e.g., plywood, particle

board, structural wood, VCT, concrete). • Little or no wet carpet or cushion.


Requirements

Class 2• Fast rate of evaporation.

• Water losses that effect the entire room of carpet and cushion.

• Water has wicked up walls less than 24 inches.• Moisture remains in structural materials (e.g.,

plywood, particle board, structural wood, VCT, concrete).

Class 3• Fastest rate of evaporation.

• Water may have come from overhead. • Ceilings, walls, insulation, carpet cushion

and sub floor in virtually the entire area are saturated.


Requirements


RequirementsClass 4

• Specialty drying situations. • These losses involve wet materials with very low permeance (e.g. hardwoods, sub

floor, plaster, brick, concrete, stone, crawlspaces).

• Typically, there are deep pockets of saturation, that normally require very low

specific humidity.

Classes of Water DamageClasses of Water Damage

Class 1: confined area, discovered quickly

few absorbent materials

Class 2: entire floor only of carpet and cushionwicking up walls 12-24”

Class 3: water originates overheadwet walls, insulation, framingentire floor of carpet and cushion

Class 4: specialty drying situations:e.g., hardwood, plaster, ground soil, concrete

Source: IICRC Task Force on Applied Structural Drying

Dehumidifier Calculations

Class 1• Slow Rate of Evaporation = 1 Pint Per 100 Ft3

Class 2 • Fast Rate of Evaporation = 1 Pint Per 50 Ft3

Class 3 • Fastest Rate Of Evaporation = 1 Pint Per 30 Ft3

Class 4• Specialty Drying Situations = 1 Pint Per 50 Ft3

• Low Grain Refrigerant (LGR)/desiccant

Determining Dehumidifier RequirementsDetermining Dehumidifier RequirementsCalculate cubic feet of room/area. Ex.: 30’x50’ = 1500 sf x 8’ = 12,000 cfEffective drying is based on the dehumidifier’s removal capacity in pints.

Conventional Refrigerant

desiccant

40 pts

2 ACH

Type Dehumidifier Class 1 Class 2

100 pts

1ACH

Low Grain Refrigerant (LGR) 100 pts 50 ptsN/A

2 ACH

Class 3 Class 4

30 pts

3 ACH

40 pts 50 pts

Ex.: Class 2 @ 12,000 cf 50 = 240 pints/24 hrs.

DriTec 150 cfm desiccant

Drizair 110 refrigerant

Drizair 200 refrigerantPhoenix 200 LGR

Drizair 2400 LGR

DriTec 325 cfm desiccant

110 cfm (10 amps)

150 cfm ( 5 amps)

450 cfm (12 amps)

250 cfm (7.2 amps)365 cfm (11 amps)

250 cfm (16 amps)

Dehumidifier Pt./Liter AHAM cfm/amps

48 pt. (23 l.)

58 pt. (29 l.)

108 pt. (56 l.)

124 pt. (61 l.)148 pt. (70 l.)

135 pt. (64 l.)

Phoenix 300 LGR 176 pt. (83 l.) 540 cfm (12 amps)

Drizair 1200 refrigerant 64 pt. (31 l.) 227 cfm ( 6.4 amps)

Dehumidifier Calculations

• Example: 1500 Sf Class 2 Water Loss @ 12,000 Cf 50 = 240 Pints @ AHAM

• We Would Need To Start With 4-60 Pints @ AHAM Dehumidifier Or 2 - 120 @ AHAM Dehumidifier

• On going equipment use is based on psychrometric calculations to verify adequate drying.


Principle 4 - Temperature Control

• Temperature control enhances both evaporation and

dehumidification.

• Dehumidifiers are most efficient at temperatures

between 70 & 90 degrees.

Temperature Control

• Keep between 80° and 90° F for first 36 – 48 hours – then lower to 68° - 72° F.

• Greatly speeds up drying process.• Use drying chamber to localize temperature.

• BTU’s of heat from equipment will raise temperature in affected area.

Psychrometry or Hygrometry

• Study of relationships between air, moisture

(humidity), and temperature, and their

effect on various materials.

Relative Humidity

• The amount of moisture in the air at a given temperature, expressed as a percentage of that

air’s total moisture holding capacity.

• Necessary for determining specific humidity.

• With Rapid Structural Drying, the RH should be at 40% by the 2nd day.

70° F @ 50% RH

50%

90° F

25%

90° F @ 25% RH

100%

Relative Humidity Changes With Temperature

50° F @ 100%RH

70° F

50° F

Which Has The Wettest Air?

70° @ 30% RH or 30° @ 70% RH

And The Answer Is…

70° @ 30% RH =33 GPP

30° @ 70% RH =17 GPP

Specific Humidity

• The weight of moisture in air expressed in grains per pound (gpp) of dry air at a standard

atmospheric pressure.

• The lower the grains of moisture the faster the structure will dry.

• Measurement used to determine if equipment is functioning properly.

Units of Measurement Grains of Moisture

1 Gallon of Water = 8 Pounds 8 Pints of Water = 8 Pounds

1 Pint of Water = 1 Pound 7000 Grains = 1 Pint

7000 Grains = 1 Pound

7’

1’

2’

1 Pound of Air = 14 F3

1 pound = 7000 Grains

Before A Water DamageAir @ 75°F/ 45% RH

After Water DamageAir @ 75°F/ 80% RH

Wet Always Goes To Dry If It Can!!

Digital Thermo/Hygrometer• Measures the (RH) temperature of the air.• Helps determine the difference between

inside and outside humidity/temperature.• Used to determine when the structure has

returned to normal humidity (before removing drying equipment).

75° F / 50% RH

75°F @ 50% RH = 70 GPP

75° F / 50% RH = 57°Dew Point

Documentation

• Charts to justify equipment. • Photos of damage.

• Justification for applying biocides.• Justification for replacing any item instead of

restoring it.• Proof structure is returned to pre-loss condition

and can not support mold growth.

Communication Can Always Be Better

COMMUNICATION IS KEYHomeowner

Insurance Adjuster

Restoration Contractor

Documentation Used For Effective Communication

• Daily Humidity Record

• Documents conditions of drying process.

• Establishes drying chamber is working effectively.

• Establishes equipment is working properly.


• Moisture Map• Documents drying of structural materials. • Diagrams placement of drying equipment.

• Establishes structure is dry and returned to pre-loss condition.

RAINBOW MOISTURE MAP Sketch each room & record moisture readings daily.

Room:______________ Dimensions: L____________ x W___________ x H_______ Offsets: L____________ x W___________ x H_______

Flooring Type - ____________Day One - ______Day Two - ______Day Three - ______Day Four - ______

Sub-Floor (moisture %) Wall One (moisture % & height) Wall Two (moisture % & height)

Type: Type: Type: Day 1 Day 1 Day 1 Day 2 Day 2 Day 2 Day 3 Day 3 Day 3 Day 4 Day 4 Day 4

Wall Three (moisture % & height) Wall Four (moisture % & height) Sill Plate–Wall One (moisture %) Type: Type: Type: Day 1 Day 1 Day 1 Day 2 Day 2 Day 2 Day 3 Day 3 Day 3 Day 4 Day 4 Day 4

Sill Plate–Wall Two (moisture%) Sill Plate-Wall Three (moisture%) Sill Plate-Wall Four (moisture%) Type: Type: Type: Day 1 Day 1 Day 1 Day 2 Day 2 Day 2 Day 3 Day 3 Day 3 Day 4 Day 4 Day 4 Comments:__________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Customer Name:_______________________________ Phone #_______________________________ Location Address:_____________________________________________________________________ Start Date___________________ Category:_____________________ Class:__________________

RainbowMoisture

Map

Residential Water Intrusion Inspection

Customer Name

Date Phone #

Address CUSTOMER MEMBER PLAN YES □ NO □

City ST Zip

Email Address

Room __________ Material Condition MC Readings Room __________ Material Condition MC Reading

RH_____% Temp______ P_______ RH_____% Temp______ GPP_______ Flooring Flooring Sub-Floor Sub-Floor Walls Walls Sill Plates Sill Plates Ceiling Ceiling


RH_____% Temp______PP_______ RH_____% Temp______ GPP_______ Flooring Flooring Sub-Floor Sub-Floor Walls Walls Sill Plates Sill Plates Ceiling Ceiling


RH_____% Temp______PP_______ RH_____% Temp______ GPP_______ Flooring Flooring Sub-Floor Sub-Floor Walls Walls Sill Plates Sill Plates Ceiling Ceiling

Room __________ Material Condition MC Readings General

RH_____% Temp______PP_______ A/C Flooring Heat Sub-Floor Attic Walls Crawlspace Sill Plates Ceiling

Comments: See Moisture Map & Photos for Detail

I understand that this inspection is performed with the intent to discover any current or previous water intrusions in the structure located at the address shown above, but by no means carries any guarantee. Neither Rainbow International, any entity associated with Rainbow International or the Service Professional performing this inspection shall be liable for any damages which may arise from any identified or unidentified water, microbial, or plumbing problem, but shall be the sole responsibility of the property owner.

X_________________________ _______________ Customer Signature Date

24/7 EMERGENCY RESTORATION SERVICE – WATER • FIRE • SMOKE

File # ________________ Date _________________ Claim # ______________ File Name ____________ Dehumidification Step 1. Calculate the cubic footage of the rooms or areas to be dried (Room) _________ Width ________X Length ________= F²_______ x Height ______= _____ F³ _________ Width ________X Length ________= F²_______ x Height ______= _____ F³ _________ Width ________X Length ________= F²_______ x Height ______= _____ F³ _________ Width ________X Length ________= F²_______ x Height ______= _____ F³ _________ Width ________X Length ________= F²_______ x Height ______= _____ F³ _________ Width ________X Length ________= F²_______ x Height ______= _____ F³ TOTAL CUBIC FEET = _________ TOTAL CUBIC FEET__________ ÷ _________ (Division Factor) = __________PINTS OR CFM

NEEDED PINTS OR CFM NEEDED ÷ _________ ÷ __________AHAM OR CFM RATING= _______ # OF

DEHUMIDIFIER’S TO START (Room) Step 2: In general, one (1) air mover is needed for every 10 -14 (LF) of wet wall surface

depending on class of water loss: ________________ @ ________Linear Feet ÷ _________= _________ Air Movers ________________ @ ________Linear Feet ÷ _________= _________ Air Movers ________________ @ ________Linear Feet ÷ _________= _________ Air Movers ________________ @ ________Linear Feet ÷ _________= _________ Air Movers ________________ @ ________Linear Feet ÷ _________= _________ Air Movers ________________ @ ________Linear Feet ÷ _________= _________ Air Movers TYPE AND TOTAL OF AIRMOVERS TO START :__________________________

Tt Type Dehumidifier Class 1 Class 2 Class 3 Class 4 Low Grain Refrigerant 100 50 40 50 Desiccant 60 30 20 30 Dehumidifier Brand AHAM Rating (80° 60% Rh) Phoenix 200 Max 133 pints Phoenix 300 176 pints Dri Air Atlantic 140 pints Dri Eaz Revolution 65 pints Dri Eaz 2000 110 pints Dri Eaz 2400 148 pints Dri Tec 150 CFM Desiccant 110 CFM Service Professional’s Initials: _____________

EquipmentCalculations

Form


Emergency Service Agreement • Gives Permission to Perform Work

• Authorizes Direction of Payment • Contains Disclaimer for Pre-existing

Conditions

Emergency Service

Agreement


Customer Satisfaction Form Signed by insured upon completion of work

Signed Copies Provided to Insured, Adjuster and Agent

Certificate of Completion &

Satisfaction Form

Specialty Drying Situations • Wood Floors

• Cabinets • Wall Cavities • Crawlspaces

Drying “cupped” hardwood floor

Crawlspace Drying

Biocides• The term is used commonly in the water damage

industry to describe any agent that kills microorganism or controls their amplification,

including bacteria, molds, slimes or fungi. Description of products generally include suffix

“cide,” meaning to “kill” (e.g. bactericide, fungicide, virucide).

Is There Need For Biocides?

• Biocide application in water damage situations may or may not be beneficial.

• A primary benefit of using biocides is that they extend the time before microorganisms begin to grow.

• The new attitude is do not apply biocides unless there is a definable need.

• The new emphasis is on thorough cleaning and use of air scrubbers to catch particles stirred up by air movers.

Biocide Use in Category 1

• Biocides are not necessary in a Category 1 water damage loss using Rapid

Structural Drying.•

• Biocides are used in Category 2 and 3 water damage losses using Rapid

Structural Drying.

1 2 3 4 5 6 7

The Effect of Time on Microbial Growth

# of Days

Antimicrobials• Antimicrobial - A substance, mechanism or condition that inhibits the growth or existence of microorganisms. A general term used to describe

various compounds, often built into consumer products or materials that have the ability to limit,

control or stop the growth of microorganisms. (fungi, bacteria, viruses and other organisms).

HEPA Filtration UnitHEPA Filtration Unit

HEPAHEPA

99.97% 0.3 microns

high

efficiency

particulate

air filter

Interior HallwayFood Source –

Structural Materials

Moisture – Water Damage

Temperature - 85°F +

Stagnant Air - HVAC off

Darkness - House closed, draperies drawn

Time - 10-14 days

Case Study of Water Loss Left Unattendedfor 10 – 14 days.

Benefits of Rapid Structural Drying

• Dries structure and contents quicker. • Better for the health and safety of the occupants.

• Cleaner way to dry by not floating carpet.• Biocide treatment not required with category 1

water damage.


• More effective and greater amount of equipment used for shorter time to dry structure.

-VS-

• Less efficient and not as much equipment used for longer time to dry only carpet and cushion.

Benefits of Rapid Structural

DryingHow Rapid Structural Drying affects

overall dollars paid on a claim:• Less replacement of costly structural materials

• Less replacement of contents • Lowers Adjusted Living Expense (ALE)

• Shortens inconvenience time for occupants• Close the file quicker!


• Eliminates much of the labor of furniture manipulation & reinstallation where most errors

occur.

• Formulas & Standards to determine amount of drying equipment & length of use.

• Documentation that structure is dry (pre-loss moisture content) from the water damage loss and

will not promote mold growth.

Top Ten Questions ToAsk the Restoration Contractor

1. Is your company IICRC certified in water damage restoration?

2. What should the relative humidity reading be in the affected area by the second day? (40%)

3. What types of air movers and dehumidifiers do you use? (LGR dehumidifiers & Axial fans)

4. How do you determine how much drying equipment should be left on the job? (RSD Formula)

5. How do you check for moisture intrusion in floors, sub-floors, walls, insulation and sill plates? (You are checking to see if they use appropriate

types of meters)

Top Ten Questions6. How do you set up the drying chamber? (You want to know if

they keep the affected areas separate from the unaffected areas)

7. Do you fill out a Moisture Map and a Daily Humidity Record?

8. How do you determine if you have the carpet and cushion extracted adequately? (pad test)

9. How do you determine when to pull the drying equipment from the job? (Moisture Map)

10. Can you provide the homeowner and the insurance company with documentation to ensure that the structure is dry and

mold growth conditions do not exist?

Questions?

Rapid Structural Drying

Documents

Transcript of Rapid Structural Drying