- HEP Roofing
- Moisture-scanning Tools

Moisture-scanning Tools
Moisture-scanning Tools | Roof Inspections | Roofing | Guild
Discover hidden water intrusion before it becomes a costly surprise. HEP’s advanced moisture-scanning tools look beyond the surface, using non-invasive infrared and capacitance technology to map trapped moisture across every layer of your commercial roof. Our certified technicians translate this data into clear, actionable reports, so you can target repairs precisely and extend the life of your investment—all with minimal disruption to daily operations.
Whether you’re buying, selling, or simply safeguarding your property, our comprehensive roof inspections pinpoint vulnerabilities that traditional visual checks miss. Partner with HEP and gain the confidence that comes from science-driven insight, transparent findings, and proactive solutions.
FAQs
Why is moisture scanning important for roofing inspections?
Moisture is one of the leading causes of premature roof failure. A moisture scan pinpoints trapped water that can compromise insulation, corrode fasteners, and foster mold growth long before stains or leaks appear inside the building. Identifying moisture early allows property owners to plan targeted repairs, extend roof life, maintain energy efficiency, and preserve any existing warranties.
What types of moisture-scanning tools do you use and how do they work?
We primarily rely on three non-destructive technologies: 1. Infrared (IR) Thermography: A high-resolution camera captures temperature variations across the roof surface at dawn or dusk. Areas that cool or heat at different rates often indicate underlying moisture. 2. Electrical Capacitance Meters: Handheld probes emit a low-frequency signal and measure how the roof assembly stores electrical charge. Wet materials have a higher dielectric constant, producing elevated readings. 3. Nuclear Hydrogen Scanners: For deeper assemblies, these devices measure hydrogen density (present in water molecules) up to 6" below the surface. Using multiple tools provides cross-verification and improves accuracy.
Can a moisture scan detect leaks that aren’t visible to the naked eye?
Yes. Most active leaks originate beneath the membrane or in hidden seams long before water reaches the ceiling. Infrared cameras and capacitance or nuclear meters allow us to visualize and quantify moisture that cannot be seen on the surface, even when the roof looks completely intact. This helps owners intervene before interior damage or structural decay occurs.
Will a moisture scan damage my roof or require any invasive procedures?
No. Our standard scanning methods are 100 % non-destructive. Infrared imaging is performed from the roof surface (or sometimes from ground level or drone), while capacitance and nuclear meters simply glide over the membrane. We do not cut cores unless you request laboratory confirmation, and even core sampling is limited to small, easily patched areas.
How long does a typical moisture-scanning roof inspection take?
Inspection time depends on roof size, complexity, and the number of tools deployed. As a guideline: • Residential roofs up to 3,000 sq ft: 1–2 hours on site. • Commercial roofs 10,000–50,000 sq ft: ½ day with a two-person crew. • Large facilities over 50,000 sq ft: 1–2 days, sometimes staged outside business hours for safety. Reports with annotated images and repair recommendations are usually delivered within 48 hours.
What happens if the inspection identifies moisture intrusion?
We provide a color-coded moisture map showing precise wet zones and estimated saturation levels. From there, you can: 1. Perform targeted repairs only where moisture exists, saving material and labor. 2. Improve drainage or add protective coatings to delay full replacement. 3. Use the report to validate warranty claims or negotiate with insurance. Our team can also supply budgetary estimates or coordinate remediation with trusted roofing contractors in Guild.