Advantages of New Construction Drying

April 10, 2023

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CONTROLLING THE MOISTURE

The amount of moisture in buildings during new construction is MASSIVE. Concrete Drywall Fire proofing Humidity

Condensation– Winter– Spring– Fall

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FIREPROOFING

Sprayed fireproofing compounds are tough to dry due to substantial water content when applied. When relative humidity inside closed structures prevents drying, ATI can help.

Sprayed fireproofing can be dried in as little as one week.

Interiors can be closed off without the danger of moisture-related problems such as the formation of mold and mildew inside walls.

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CONCRETE

Slow drying concrete slabs often create delays in the overall schedule due to flooring material specs that cannot be met.

Large amounts of water can get trapped in concrete block walls. This trapped moisture will eventually show up in the form of blistering paint and wall coverings.

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BASIC GROUPS OF MATERIALS

WOOD ENGINEERED WOOD TILES

GYPSUM/DRYWALL PLASTER/CONCRETE

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BASIC GROUPS OF MATERIALS

WOOD

ENGINEERED WOOD

Hardwood flooring and millwork will absorb moisture from the air and from a wet slab. Warping and bending will result if the moisture is not removed before installation.

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BASIC GROUPS OF MATERIALS

VCT TILEVINYL GOODS

RESILIENT FLOORING

Moisture-sensitive adhesives used to install VCT tile and fiber-backed carpet are often compromised when the concrete slab is still wet. This moisture may lead to early failure of flooring materials.

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Climate Control

Drying purposes

Desiccant dehumidification can provide warmer drier conditions for:

Working personnel

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BENEFITS OF DRYING

IMPROVES WORK SCHEDULES

REDUCES COSTS

REDUCES LIABILITY

Waiting for materials to dry

Avoid expensive budget over-runs

Scheduling: Puts time on your side

Mold Defects

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HELPING PREVENT COSTLY:

CALLBACKSFraming and drywall that is dry before finishing will reduce or eliminate cracks, settling, leaks, mold, and expensive call-backs for repairs. Moisture content varies with the

geographic location, temperature and humidity. However, in no case should walls be sealed up with a wood moisture content of 16% or greater since this will create a condition for surface molds to grow.

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PSYCHROMETRICS

The science and practice associated with atmospheric air mixtures, their evaluation, control and effect on materials and comfort.

Commonly used variables are temperature, relative humidity, and dewpoint temperature.

Dewpoint can be determined if at least two of the psychrometric variables are identified.

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PSYCHROMETRICS

Relative Humidity: A measure of the water in a given air sample, relative to its ability to hold moisture at that temperature.

Warm air holds more moisture than cold air. 100% RH = Dewpoint (Saturation). Dewpoint: Water vapor will condense on

surfaces when the dry bulb temperature falls below the dewpoint or saturation temperature.

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PSYCHROMETRICS

Humidity: The more moisture in the air, the more it weighs. If the weight is too great, the moisture in the materials will NOT evaporate.

When air becomes too saturated, it can cause secondary damage to the other areas in the structure.

The higher the RH the higher the dew point. The key to drying wet materials is lowering

the dewpoint of the air and the materials.

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WEATHER DATA

Normal Daily Temp (F)

Relative Humidity (AM)

(%)

Precipitation (INCHES)

Dewpoint Temp

(F)

Los AngelesMay 58 77 0.31 57December 48 67 1.91 41

San FranciscoMay 51 77 0.54 44December 47 80 3.18 43

ChicagoMay 51 77 2.17 46December 24 80 2.63 20

OrlandoMay 66 86 3.74 64December 53 89 2.31 52

HoustonMay 68 91 5.11 68December 65 86 3.78 52

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HEAT VS. DEHUMIDIFICATION

…does not decrease moisture content but does increase the ability of air to hold moisture.

…decreases RH but does not change the dewpoint.

…makes it difficult to maintain a proper dewpoint spread with heaters only.

…may damage coatings and produce uncomfortable work environments.

…is very important for moisture movement but…

…too much heat may push moisture deeper into the materials.

…hot moves to cold and can cause condensation issues.

HEAT…

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HISTORY OF DESICCANTDEHUMIDIFICATION

Developed for commercial use for the U.S. Navy to keep the cargo holds of ships dry during WWII.

Honeycomb rotors designed in the 1950s by U.S. Navy Commander Oliver Colvin and Carl Munters.

Today, dehumidification is an important process used in new construction.

High-tech desiccant dehumidifiers have revolutionized the construction industry.

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HOW DESICCANT DEHUMIDIFICATION WORKS?

High volume desiccant dehumidifiers

exhaust extremely dry air into the

construction areas.

High volume desiccant dehumidifiers

exhaust extremely dry air into the

construction areas.

The dry air lowers the

vapor pressure and dew point of the building air, causing moisture in materials to pass from levels of high pressure

to low pressure.

The dry air lowers the

vapor pressure and dew point of the building air, causing moisture in materials to pass from levels of high pressure

to low pressure.

Construction materials are dried

out and mold is controlled, allowing

the project to proceed without moisture delays.

Construction materials are dried

out and mold is controlled, allowing

the project to proceed without moisture delays.

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DESICCANT DEHUMIDIFIERS

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DESICCANT WHEELS

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Removing excess moisture with desiccant dehumidification.Removing excess moisture with desiccant dehumidification.

CONCRETE DRYING

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COST TO DRY?

A 5,500 cfm dehumidifier, in an

insulated cabinet with both gas and electric

reactivation costs about $60,000.00, plus tax

and shipping

A 4,500 cfm dehumidifier rents for about $3,600/month

RENTPURCHASE

COST OF DRYING OUT A BUILDING?PRICELESS!

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WHY ATI?

American Technologies, Inc. is a leader in business continuity and disaster recovery services for residential, commercial and industrial properties. The company is a family-owned operation and employs a staff numbering over 600 in 11 offices located throughout the United States.

Based in Orange, CA, ATI is comprised of two major divisions, Environmental and Restoration/ Reconstruction. Within these divisions, we provide comprehensive recovery services following natural and man-made disasters including:

American Technologies, Inc. is a leader in business continuity and disaster recovery services for residential, commercial and industrial properties. The company is a family-owned operation and employs a staff numbering over 600 in 11 offices located throughout the United States.

Based in Orange, CA, ATI is comprised of two major divisions, Environmental and Restoration/ Reconstruction. Within these divisions, we provide comprehensive recovery services following natural and man-made disasters including:

ATI provides safe, efficient and cost-effective solutions for construction moisture problems.

Our trained and certified personnel understand the physics of thermal and moisture movement through building envelops, systems and materials.

Stay on schedule and remain profitable use ATI.

Partnering with ATI will help your projects move faster, stay on schedule and remain profitable.

ATI provides safe, efficient and cost-effective solutions for construction moisture problems.

Our trained and certified personnel understand the physics of thermal and moisture movement through building envelops, systems and materials.

Stay on schedule and remain profitable use ATI.

Partnering with ATI will help your projects move faster, stay on schedule and remain profitable.

24-hour emergency response Environmental remediation for asbestos,

lead, mold and biohazards Contents cleaning and restoration Reconstruction National catastrophe and large losses

24-hour emergency response Environmental remediation for asbestos,

lead, mold and biohazards Contents cleaning and restoration Reconstruction National catastrophe and large losses

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THE ATI ADVANTAGE

› 300,000 square feet of operational facilities throughout the United States.

› The Catastrophe Team has personnel, supplies and equipment strategically placed throughout the U.S. to ensure a quick response time to your disaster.

› Each year we complete over 7,500 projects throughout the U.S. There is no project too large or too small to where ATI cannot assist you in your loss.

› To date, we’ve never had to turn down a job due to a lack of resources, supplies, equipment or personnel.

› Unparallel response times following an emergency.

› Each project is assigned full time support and staff and an initial scope of work with project budgetary numbers are given to the client. The main difference between us and our competition is that we want to expeditiously assist you and spend as little of your money as possible.

› 300,000 square feet of operational facilities throughout the United States.

› The Catastrophe Team has personnel, supplies and equipment strategically placed throughout the U.S. to ensure a quick response time to your disaster.

› Each year we complete over 7,500 projects throughout the U.S. There is no project too large or too small to where ATI cannot assist you in your loss.

› To date, we’ve never had to turn down a job due to a lack of resources, supplies, equipment or personnel.

› Unparallel response times following an emergency.

› Each project is assigned full time support and staff and an initial scope of work with project budgetary numbers are given to the client. The main difference between us and our competition is that we want to expeditiously assist you and spend as little of your money as possible.

› The most cost effective and cost conscious company in the industry

› Our 11 regional branch offices enable us to respond quickly.

› The 600 full time employees that we have give us the ability to bring out full equipped and trained employees. You are much less likely to see temporary workers on your project if you hire ATI.

› Family owned and operated means that the service and end product are the same throughout the company, it’s not a franchise. How many other companies will have the owner of the restoration company on-site at your disaster project?

› The utilization of state of the art technology and equipment enables us to complete your project using the most cost effective measures available in the industry.

› The most cost effective and cost conscious company in the industry

› Our 11 regional branch offices enable us to respond quickly.

› The 600 full time employees that we have give us the ability to bring out full equipped and trained employees. You are much less likely to see temporary workers on your project if you hire ATI.

› Family owned and operated means that the service and end product are the same throughout the company, it’s not a franchise. How many other companies will have the owner of the restoration company on-site at your disaster project?

› The utilization of state of the art technology and equipment enables us to complete your project using the most cost effective measures available in the industry.

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OTHER SERVICES`

EMERGENCYSERVICES

CONTENTSENVIRONMENTAL

(mold, asbestos, lead, and biohazard)

CATASTROPHE

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TERRITORIES

ALALAZAZ

ARAR

CACA

COCO

CTCT

DEDE

FLFL

GAGA

IDID

ILIL ININ

IAIA

KSKS

KYKY

LALA

MEME

MDMD

MAMAMIMI

MNMN

MSMS

MOMO

MTMT

NENE

NVNV

NHNH

NJNJ

NMNM

NYNY

NCNC

NDND

OHOH

OKOK

OROR

PAPA RIRI

SCSC

SDSD

TNTN

TXTX

MexicoMexico

UTUT

VTVT

VAVA

WAWA

AKAK

HIHI

WVWV

WIWI

WYWY

= Regional Offices

= ATI Presence

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TERRITORIES

HIHI

AZ

CA

FL

ID

IL IN

IA

KY

LA

MI

MN

MS

MT

NV

NM

NY

OH

OR

TN

TX

Mexico

UT

NC

WA

WI

= Regional Offices

= ATI Presence

SC

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TERRITORIES

HIHI

AZ

CA

FL

ID

IL IN

IA

KY

LA

MI

MN

MS

NV

NM

NY

OH

OR

TN

TX

Mexico

UT

WA

WI

Sacramento

Bay Area

San Jose

Los AngelesOrange

Inland EmpireSan Diego

Las Vegas

Phoenix

Chicago

= Regional Offices

= ATI Presence

NC

SC

MT

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AMERICAN TECHNOLOGIES, INC.(800)-400-9353

www.amer-tech.com

Meeting Challenges. Exceeding Expectations.