Moisture mapping offers a valuable solution for identifying areas of excessive moisture within a building. By conducting a survey, building inspectors locate moisture sources and assess the extent of damage, facilitating timely remedial action. Moisture mapping encompasses both invasive and non-invasive detection methods. ### Moisture Mapping and Detection Methods **Non-Invasive Methods:** * **Infrared Thermography:** Detects temperature differences associated with moisture infiltration, creating a thermal map of the affected area. * **Microwave Scanning:** Utilizes radio frequency sensors to penetrate surfaces and detect moisture concealed beneath materials. * **Moisture Meters:** Measure the electrical resistance of materials, providing an indication of moisture levels. **Invasive Methods:** * **Probing:** Involves drilling small holes into building materials to insert moisture probe devices. * **Drilling and Sampling:** Allows for the extraction of material samples, which are analyzed for moisture content. ### How to Check for Moisture Under Your House? **Visual Inspection:** * Check for water stains, mold growth, and dampness on foundation walls, crawl spaces, and basement floors. * Look for areas where water may be seeping in, such as cracks, holes, or faulty seals. **Non-Invasive Detection:** * Use a moisture meter to scan the underside of the floor and foundation walls for excessive moisture. * Consider hiring a professional inspector to conduct a moisture mapping survey for a comprehensive assessment. By understanding the methods of moisture mapping and their application in detecting moisture under your house, you can take proactive steps to address water damage and safeguard the structural integrity of your property.