EXAMPLES, EFFECTS, AND CAUSES OF CRAWL

SPACE AND BASEMENT WATER INTRUSIONS

 

 

 

 

 

Figure 1. Outside seepage water entering crawlspace
area from under foundation wall.

 

 

 

Figure 2. Roof downspout leader pulled away from drain pipe, causing roof water to fall, collect and soak into the foundation soil and weaken the footer's ability to support the foundation wall.

 

 

Figure 3. Classic example of mildew formed on heating & A/C ducts (brownish-gray areas) due to high humidity and poor ventilation. Note insulation falling away from underflooring area because of high
moisture content.

 

 

Figure 4. Roof water is improperly directed from roof
downspout leader toward foundation wall.

 

Figure 5. Temporary use of corrugated plastic drainage pipe carry roof water away from foundation wall to several downspout leaders.

 

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