Moisture mapping is the process of identifying the presence and extent of moisture content within a structure. It involves the use of specialized equipment and techniques to accurately locate and assess moisture-related issues that can impact the building’s structural integrity and indoor air quality.

### Detection Methods in Moisture Mapping

**1. Invasive Methods:**

– **Drilling and Inspection:** Holes are drilled into the building’s surfaces (e.g., walls, floors) to extract samples for analysis. This method provides direct access to the underlying materials and moisture levels.
– **Probe Insertion:** Specialized probes are inserted into the structure to measure moisture content and temperature at various depths.

**2. Non-Invasive Methods:**

– **Infrared Thermography:** Infrared cameras detect temperature variations, allowing for the detection of moisture-laden areas that appear colder than their surroundings.
– **Electrical Impedance Tomography (EIT):** Sensors send electrical currents through the building to create a map of moisture distribution based on the material’s electrical conductivity.
– **Capacitive Sensing:** Sensors measure changes in capacitance caused by moisture fluctuations in the environment.

### How to Check for Moisture Under the House

**1. Visual Inspection:**

– Check for signs of water damage, such as stains, mold growth, or peeling paint.
– Examine the foundation for cracks or gaps where moisture may infiltrate.

**2. Moisture Meter:**

– Use a moisture meter to measure moisture content in walls, floors, and other surfaces directly.
– Insert the probes beneath the house (e.g., crawl space or basement) to detect elevated moisture levels.

**3. Professional Moisture Mapping:**

– Consult a qualified moisture mapping professional for a comprehensive and accurate assessment.
– They will utilize advanced techniques to identify the source and extent of moisture issues under your house.