MOISTURE SURVEYS
Infrared Imaging
Performed during evening hours in conjunction with the ASTM C1153 Protocol, infrared (IR) imaging is a non-destructive method of detecting water in roof and wall assemblies. Infrared imaging can also be used to detect and locate air leakage in windows, air barriers, and HVAC systems.
ASTM C1153 Protocol: This practice applies to techniques that employ infrared imaging at night to determine the location of wet insulation in roofing systems that have insulation above the deck in contact with the waterproofing.
Electrical Impedance Scanning
Performed in conjunction with the ASTM C7954 Protocol, electrical impedance (EI) scanning is a non-destructive method of detecting water in roof and wall assemblies. Electrical impedance scanning is also used to detect and locate moisture in materials such as concrete, wood, and drywall.
ASTM C7954 Protocol: This practice applies to techniques that use nondestructive electrical impedance (EI) scanners to locate moisture and evaluate the comparative moisture content within insulated low-slope roofing and waterproofing systems.
Pin Probe Measurement
Used when non-destructive imaging and scanning cannot be accurately performed, minimally invasive pin probe measurements is an effective solution for moisture detection. Pin probe measurement is also used to detect and locate moisture in concrete, wood, and drywall, as well as secondary confirmation of IR and EI results. Performed in conjunction with the ASTM C7954 Protocol (modified for pin probe).
ASTM C7954 Protocol: This practice applies to techniques that use non-destructive electrical impedance (EI) scanners to locate moisture and evaluate the comparative moisture content within insulated low-slope roofing and waterproofing systems.