5 Steps to Solving Crawlspace Moisture

The following 5 Simple Steps highlight the various aspects of a crawl space that need to be addressed to properly solve crawlspace moisture.

STEP 1: Reduce water getting into the crawlspace

Water needs to be routed away from the foundation. Gutters should be kept clean and in good working order, and all downspouts need to drain away from the foundation. The ground should be pitched away from house as much as possible. There should not be any water standing in the crawlspace after a rainfall.  If there is, the crawlspace may need a sump pump or an interior drain system. Often standing water inside the crawlspace can be solved by proper maintenance and planning outside of the home.

STEP 2: Cover the ground with a vapor barrier

There are various opinions on how much coverage and what type of plastic should go into a crawlspace.  Our basic recommendation is that the vapor barrier plastic covers 100% of the crawlspace. Then either the seams should be taped, or there should be 12-18 inches of overlap of plastic at the seams.

STEP 3: Install an ATMOX Controlled Ventilation System

The ATMOX Controls and Fans will work to reduce the moisture that is still accumulating in the crawlspace. 


ATMOX Controls plug into an outlet anywhere in the home, usually in the garage or storage room for easy access. The ATMOX System uses two sensors:  one for inside the crawlspace and one for the outside of the home. These sensors plug directly to the control box via included telephone extension wires.  



The ATMOX System can use any number of ATMOX 12VDC Fans as needed for house layout.  The fans wire and receive power directly from the control box via low voltage landscape lighting wiring. The fans easily clamp onto the voltage wire with easy-to use connectors.

STEP 4: Close off unused vents and isolate porches and decks

By closing off vents that are not being used by the fans in the ATMOX System, the outside air coming in will be limited when the outside air is not beneficial to the crawlspace and during cold winter months when crawlspace doesn’t need to be so extremely cold.  The air under decks and porches is generally much warmer and more humid than crawlspace air and can negatively affect the conditions under the house.

STEP 5: Add a dehumidifier, if necessary

In most cases, a dehumidifier is not needed in conjunction with an ATMOX System.  There are homes that have excessive ground water, and it may be necessary to dry the crawlspace with a dehumidifier in times when the outside air is too wet to use ventilation. In those homes, the dehumidifier should be incorporated with the ATMOX system so that the controls can run the dehumidifier only when absolutely necessary.


 

 

 





  




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