Turner's Proprietary Crawlspace Dehumidifier in action
Keep it Dry - Dehumidify
Excess moisture, introduced by way of dirt, vented crawlspaces, contributes to wood rot, fungi growth and increased pest activity, including infestation and colonization. Moisture in crawlspaces migrates to the upper levels of the home through a “stack effect”. In essence, whatever air is below the house moves inside the house, mixes with the air conditioning, and carries odors and contributes to poor indoor air quality and uncomfortably high humidity levels.
Encapsulated crawlspace caused three years of nasty odor in the house until we put our dry system in it. We recommended removing the encapsulation.
Moisture Due to Stack Effect Contributes To:
- High Humidity
- Pest Infestations
- Poor Indoor Air Quality
- Mold Growth
- Musty Odors
- Damage to Property
As warm air rises and escapes through the upper levels of the home, new air finds its way into the home to replace what’s been lost. Intake air comes in at the lower levels – through the dirt crawlspace.
Fiberglass insulation and spray foam should never be installed in the subfloor. Jeff May, an expert national indoor air quality professional, says "I have taken hundreds of samples of fiberglass insulation in crawlspaces and 100% of the samples are severely infested with mold."
The number one problem with crawlspaces is moisture. The soil produces moisture from the water table below and that is the problem.
Greg Weatherman, Aerobiological, Inc. "Soil is always wet, even when it appears to be dry. Water from ground sources continuously moves through the particles of the soil. Crawlspaces are the most common places I find overlooked by others when investigating. You should never have bare soil below a structure where you intend to live or work!" Keep it dry!
Homes that have the professional dry ducted dehumidification system with a properly spaced permanent liner and closed foundation vents are protected from both the humid outside air and the ground’s natural moisture. The really big benefit is that this strategy minimizes fungi and mildew growth, guaranteeing a more structurally sound and healthier home.
Building Science Experts Agree About Crawlspaces
Building Science Corporation says that crawlspaces are real simple to understand and deal with. When you vent crawlspaces you bring in hot, humid air and cause moisture and mold problems.............Moisture moves to the cold surfaces. Venting dirt crawlspaces made sense only when you had no air conditioning and no insulation and no crawlspace walls.
Rich Johnson, CEO, Air Allergen&Mold Testing says: "We do over a thousand inspections a year and we find that moisture in the crawlspace is a significant contributor to the adverse health effects that can come from microbial growth within the home. So we definitely think the crawlspace is an important part of the health of the home and it should be kept dry and mold-free."
Turners Underseal Crawlspace Dry System
Our Dry System moves air all over the crawlspace from at least three different areas. Furthermore, our exclusive Sound Suppressor Plenum Air Diffuser provides maximum dry air output and quiet operation. Our wood treatment service can be completed before the Dry System installation or after. If new insulation is required, it can be installed at this point.
This diagram shows the "stack effect".
Air flow always moves from bottom to top.
AIR QUALITY PROFESSIONALS
For over 30 years we have worked in many aspects of the indoor air quality business.