Moisture Mapping

Purpose: Identify and map moisture within roof insulation and deck layers.

How it works: Systematic grid or transect readings with calibrated moisture
                         meters and probes; readings logged and visualized on a roof plan.

Benefits: Quantifies wet area extent, helps prioritize replacement vs. repair,
                supports insurance claims.

Deliverables: Moisture map, annotated photos, data table, recommended repair
                       sequence.

Preparation: Clear rooftop access, power or safe access path for crew.
                      Limitations: Probe readings require access points or core sampling for
                      verification in some roof assemblies.
 

Infrared Scanning

Purpose: Detect thermal anomalies caused by moisture retention or roof failures.

How it works: Thermal camera survey during optimal thermal gradient windows,
                         followed by ground-truthing with moisture meters.

Benefits: Fast coverage of large areas, non-contact identification of suspect
                zones, effective for evening/morning surveys when temperature contrast is highest.

Deliverables: Thermal map with hot/cold imagery, identified targets with
                       confidence levels, next-step recommendations.

Preparation: Best performed during recommended temperature differentials;
                      unobstructed line of sight to roof areas.

Limitations: False positives from wet ballast, shading, or thermal bridging;
                      requires verification.
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Electronic Field Vector Mapping EFVM

Purpose: Pinpoint the actual entry point of water on electrically conductive roof assemblies.

How it works: EFVM applies a low-voltage electric field across the roof surface
                         while measuring current flow to locate pathways where water penetrates.

Benefits: Identifies precise leak entry points without destructive exploratory cuts;
               highly effective on metal and conductive roofs.

Deliverables: Pinpoint locations on roof plan, voltage/current traces as evidence,
                       recommended repair locations.

Preparation: Roof must be conductive or have a conductive layer; safety
                      controls implemented for live-field work.

Limitations: Not suitable for non-conductive single-ply membranes without a
                      conductive layer.
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Low Voltage Roof Scanning

Purpose: Non-destructive scan to detect moisture in membranes and insulation
                with minimal roof disturbance.

How it works: A low-voltage electric field and sensitive detection equipment are
                         used to measure moisture-related conductance differences across a roof surface.

Benefits: Safe for most membrane roofs, minimal wear, quick deployment, and
               suitable for routine condition assessments.

Deliverables: Condition map, prioritized targets, photographic evidence, and
                      recommended next steps. 

Preparation: Clear roof surface; coordination if rooftop equipment must be moved.

Limitations: Reduced effectiveness on very thin or non-conductive systems.
 

High Voltage Roof Scanning

Purpose: Deep-penetration moisture detection for thick, multi-layer roofs or
                heavily insulated systems.

How it works: Controlled higher-voltage scanning increases sensitivity and
                        depth of detection compared with low-voltage methods; always performed with
                        strict safety protocols.

Benefits: Finds hidden saturated zones that low-voltage methods can miss;
                useful for older or complex roof builds.

Deliverables: High-resolution condition maps, failure probability ratings,
                      recommended invasive or repair actions.

Preparation: Safety setups, exclusion zones, and coordination with building  operations.
                     Limitations: Requires specialized equipment and certified operators; more
                     planning for safety and access.