ATMOX Crawlspace Ventilation System - Controlling Moisture

Thursday, March 11, 2010

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Understanding Crawlspaces - High Moisture

Moisture can be created from various sources. Some of the most common are:

HVAC units create condensation on the pipes and ductwork
Garages, porches, decks and other additions often limit the number of air vents available and cut off the air circulation
Decks will hold warm moist air that then enters into the crawlspace

How can it be measured?

Humidity becomes a problem in your crawlspace when the moisture becomes a condensate and creates water. As temperatures rise and fall, this happens all the time
ATMOX and most home inspectors rely on wood moisture readings in the crawlspace to determine if the moisture and humidity are "high" and having an effect on the structure of the home.
- Wood moisture content will vary in any home depending on temperature and season
What is a good number for a wood moisture reading?
- Scientifically it varies with relative humidity and temperature.
- A good rule of thumb is that when wood moisture levels reach 20% for an extended period of time - the wood is susceptible to wood decay and mold growth

What to do if you have high moisture levels in your crawlspace?

Make sure you have a vapor barrier in place to reduce moisture in your crawlspace. If you already have one, make sure it doesn't need to be fixed or added to. Over time, they can get shoved around. A vapor barrier is important and will help with ground moisture but it alone will not solve a moisture problem.
Install the ATMOX system
1. This is exactly what ATMOX was designed for
2. For complete control over the condition of the crawlspace, a dehumidifier can be installed in conjunction with the ATMOX system for an energy efficient way to reduce the moisture levels
3. Contact ATMOX at 704-248-2858 or at info@atmox.com for more information