The Professional House Doctors The Professional House Doctors that specialize in:that specialize in:

•Crawlspace & Basement Crawlspace & Basement moisture controlmoisture control

•Mold & Odor RemovalMold & Odor Removal

•Air Duct cleaning & sealingAir Duct cleaning & sealing

•Chemical-free, whole house Chemical-free, whole house sanitizingsanitizing

•Central HEPA air purification Central HEPA air purification systemssystems

Importance of Crawlspace Sealing

Why should you seal your crawlspace?

• Building standards for dirt crawlspaces have changed Building standards for dirt crawlspaces have changed very little for hundreds of years. very little for hundreds of years.

• The earth is damp, and that moisture enters your home.The earth is damp, and that moisture enters your home.

• Moisture damages homes, by rotting wood, supporting Moisture damages homes, by rotting wood, supporting mold growth, and affecting temperature control.mold growth, and affecting temperature control.

• Moisture also is a source for attracting pests.Moisture also is a source for attracting pests.

Why should you seal your crawlspace?

• Ventilation is required by the building code of residential Ventilation is required by the building code of residential homes.homes.

• Warm air entering crawlspace vents is full of moisture.Warm air entering crawlspace vents is full of moisture.

• The damp, cool earth in your crawlspace is cool (55The damp, cool earth in your crawlspace is cool (55°°).).

• When moist air is cooled, vapor condenses.When moist air is cooled, vapor condenses.

Why should you seal your crawlspace?

• Mold is everywhere in the media and crawlspaces are Mold is everywhere in the media and crawlspaces are great places for mold.great places for mold.

• The crawlspace is The crawlspace is notnot a separate environment. It is part a separate environment. It is part of of ONEONE house, just like a basement. house, just like a basement.

• Homeowners are more informed about the dangers in Homeowners are more informed about the dangers in the home and the effect on their health.the home and the effect on their health.

• Whatever is in the crawlspace, is also in your home.Whatever is in the crawlspace, is also in your home.

Stack Effect - Air flow in a houseAir escapes upper levelsAnd new air enters from lower levels to replace it.

What is in the crawlspace, is in the house.What is in the crawlspace, is in the house.

Up to 50% of the air we Up to 50% of the air we breathe upstairs, came breathe upstairs, came from the crawl space!from the crawl space!

Before & After Pictures of Crawlspace repair/sealing

Crawlspace Repair

Venting of the Crawlspace – Good Venting of the Crawlspace – Good or Bad?or Bad?

Vented, damp crawl spaces cost more!

• COLD COLD air under your floors causes uncomfortable air under your floors causes uncomfortable floors. floors.

• Homes with Homes with COLDCOLD floors run their heater longer, floors run their heater longer, which costs more to which costs more to HEATHEAT..

• Dampness in your crawlspace adds to the Dampness in your crawlspace adds to the dampness upstairs.dampness upstairs.

• Damp homes are more uncomfortable, so you run Damp homes are more uncomfortable, so you run the AC longer and harder, costing more money.the AC longer and harder, costing more money.

Sources that Say Close the Vents

• US Dept of EnergyUS Dept of Energy• Joe Stiburek - Esteemed Building Scientist, Joe Stiburek - Esteemed Building Scientist,

Building Science Corp.Building Science Corp.• Dominion Virginia PowerDominion Virginia Power• Bill Rose - Building Scientist, University of Bill Rose - Building Scientist, University of

IllinoisIllinois• Bruce Davis, Bill Warren - Building Scientist, Bruce Davis, Bill Warren - Building Scientist,

Advanced Energy, Research Triangle Park, Advanced Energy, Research Triangle Park, NC State RaleighNC State Raleigh

• Habitat for Humanity - Americus GeorgiaHabitat for Humanity - Americus Georgia• Craig DeWitt PhD, PE - RLC EngineeringCraig DeWitt PhD, PE - RLC Engineering• Rick Kupecki and many other Building Science Rick Kupecki and many other Building Science

ConsultantsConsultants

Before & After Pictures of Vent closing

MOLD

For mold to grow it needs…

• Mold sporesMold spores

• A food source. Organic materials – anything A food source. Organic materials – anything that was once livingthat was once living

• Moisture. Relative Humidity over 60% or Moisture. Relative Humidity over 60% or moisture content in wood of over 20%.moisture content in wood of over 20%.

• Temperature range between 32Temperature range between 32°° F and 100 F and 100°° F F

As mold remediation contractors, our philosophy…

• To get rid of mold, you need to get rid of water To get rid of mold, you need to get rid of water and moisture.and moisture.

• You need to control temperature variances.You need to control temperature variances.

• You need to address food sources for mold.You need to address food sources for mold.

• Therefore, sealing your crawlspace vents is a Therefore, sealing your crawlspace vents is a first step in of mold remediation.first step in of mold remediation.

Moisture in Wood

• Wood is considered dry at moisture content Wood is considered dry at moisture content below 18%below 18%

• Mold will grow when moisture content is over Mold will grow when moisture content is over 20%20%

• About half the homes with crawlspaces have About half the homes with crawlspaces have moisture content of over 20%moisture content of over 20%

Before & After Pictures of Mold in the Crawlspace

6 Ways Crawlspace Encapsulation Saves Money

6 Ways Crawlspace Encapsulation Saves Money - Steps 1-3Steps 1-3

• ONE - AC system operates more efficiently ONE - AC system operates more efficiently with less humidity in the air.with less humidity in the air.

• TWO - Stopping warm air from entering in TWO - Stopping warm air from entering in summer decreases the demand for the AC.summer decreases the demand for the AC.

• THREE - Condensation on cold ducts causes THREE - Condensation on cold ducts causes energy loss, requiring more demand for the energy loss, requiring more demand for the heater & AC.heater & AC.

6 Ways Crawlspace Encapsulation Saves Money - Steps 4-6Steps 4-6

• FOUR - Cold air entering in winter causes heat FOUR - Cold air entering in winter causes heat loss.loss.

• FIVE - Supply ducts leaking heat into the FIVE - Supply ducts leaking heat into the crawlspace is lost through crawlspace vents.crawlspace is lost through crawlspace vents.

• SIX - Encapsulation stops unconditioned air SIX - Encapsulation stops unconditioned air entering from the crawlspace and through entering from the crawlspace and through walls.walls.

RadonFinal thoughts on basements & Final thoughts on basements &

crawlspaces.crawlspaces.

The RX4CleanAir-The RX4CleanAir-Radon Mitigation SystemRadon Mitigation System

3” or 4” pipe to roof3” or 4” pipe to roofFanFan

Pictures Of Our Teams Repairing A Crawlspace

More Before & After Pictures of Crawlspace Repair/Sealing

What’s Next…

Thanks for viewing our presentation. Please contact Thanks for viewing our presentation. Please contact us to schedule a complete evaluation of your home. us to schedule a complete evaluation of your home. Our knowledgeable representatives will provide you Our knowledgeable representatives will provide you with a comprehensive overview of your home.with a comprehensive overview of your home.

RX4CleanAirRX4CleanAir wants to provide you and your family wants to provide you and your family with a healthy environment, becausewith a healthy environment, because “CleanAir Is “CleanAir Is The Best Medicine”.The Best Medicine”.

Contact Us

• To reach…To reach…

–Call (888) RX4-CleanAirCall (888) RX4-CleanAir

–Visit www.rx4cleanairllc.comVisit www.rx4cleanairllc.com

–Email info@rx4cleanairllc.comEmail info@rx4cleanairllc.com

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