GRADING OR ANGLE NEXT TO THE BUILDING SHOULD BE SLOPED AWAY FROM THE FOUNDATION.
Rainwater should be channeled away from the foundation to prevent seepage into an adjacent crawl space or basement. This photo shows a horizontal splash block that allowed water to pool against to the building (note the rust) and leak into the adjacent crawl space underneath the building. A slanted splash block (without shrub interference) would properly direct the water away from the building. These conditions are prime breeding grounds for mold, including toxic and black mold.
Carpet that has been wet for more than 24-48 hours may have mold damage (including toxic mold or black mold). Note the water staining on the back of this water damaged carpet. Removal of water/mold damaged carpet should be done very carefully, preferably by professional certified mold remediators in accordance with the NYC Department of Health guidelines. See: Guidelines on Assessment and Remediation of Fungi in Indoor Environments.
A vine growing out of basement insulation suggested an abnormal source of moisture. Further investigation confirmed improperly installed windows that allowed rainwater to penetrate walls and thus create mold growth.
Black mold deposits on visible floor joists are not uncommon. Surface sampling with the MOLDetect® kit can determine whether the discoloration is due to mold, dirt or just a flaw in the wood.
Mold spores in locations affected by air currents (supply vents) are more likely to become airborne.
Mold often is found on sheetrock walls & ceilings after water incidents. Sheetrock and other porous materials that have mold growth need to be cut out and discarded during mold remediation.
Mold observed on kitchen cabinets due to major water leaks in a foreclosed home. Mold growth in this home was due to water damage as well as very elevated humidity levels that were not addressed for a period of time.