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Tramex RWS Tramex Roof & Wall Moisture Scanner

Made in the EuThe Tramex Roof & Wall Moisture Scanner is extremely easy to use and provides quick and accurate readings of moisture in roofs, walls, and EIFS (Exterior Insulation Finish Systems).

The RWS has dual operating modes for Roofing and EIFS. Each of these modes has two sensitivity ranges for both deep penetration and low penetration sensitivity enabling the user to scan EIFS and roofing with a signal penetration ranging from the surface up to approximately 100mm. The RWS non-destructively evaluates moisture and traces leaks back to the source.

As an ideal moisture meter for when you need non-destructive readings, this unit helps inspectors and contractors easily find leaks and trace them back to the source.

The unit is lightweight and includes a 9V battery and a telescopic handle.

The Tramex RWS is a multi-mode non-invasive impedance moisture scanner designed for the instant, precise and non-destructive evaluation of moisture conditions and leak tracing in the roofing and walls systems of the building envelope. The RWS is used to perform ASTM D7954.

The Problems of Excess Moisture in the Building
By visual inspection, locating excess moisture and decay in or behind EIFS or Roofing Systems can be extremely difficult as normal evidence of this moisture and decay may not be visible on either side of the wall or roof. Excess moisture can be hidden and trapped in the substrate and within the thickness of the wall or roof construction. If these conditions are allowed to continue the moisture will increase, eventually leading to rot and decay and possible failure of the system and the structure. Also wet insulation loses its thermal value, resulting in unnecessary heat loss or gain and thermal movement in the structure. Early detection of wet areas and corrective remedial action makes good economic sense.

Product Design
The Roof & Wall Scanner detects and evaluates the moisture conditions within roofing and wall systems and other building materials by non-destructively measuring the electrical impedance. A low frequency electronic signal is transmitted into the material under test via the electrodes in the base of the instrument. The strength of this signal varies in proportion to the amount of moisture in the material under test. The Roof & Wall Scanner determines the strength of the current and converts this to a comparative moisture content value, displaying it on a large clear analogue dial.

Operating Procedure
Moisture detection testing can be done at the time of installation, as part of an ongoing maintenance program, or prior to reparation of damaged roofing and wall systems. The RWS is a handheld, hardwearing instrument with dual operating modes for roofing and EIFS/Foam insulation systems, each with two ranges of signal penetration. Having calibrated the RWS on a known acceptably dry area, the RWS gives instant readings for the moisture survey.


  • For tracing leaks into the waterproofing membrane back to the source
  • The adjustable sensitivity is the perfect feature to locate the leaking source very precisely.
  • Instant clear readings
  • Lightweight, hand held and battery operated
  • Fast and easy to operate
  • “Hold” function facilitates ease of recording readings
  • A combination of Tramex’s Leak-Seeker and WWD Wet Wall Detector
  • For non-destructive moisture evaluation of roofs and EIFS building envelope

Multi-mode moisture scanner for non-destructive moisture detection and leak tracing for:
- Built-Up
- Non-Conductive Single Ply
- Modified and Foamed Roofing Systems
- Exterior Insulation and Finishing Systems (EIFS)


Tramex Professional Tramex Professional Digital Wood Moisture Meter

  • Wide moisture content range: 6 to 40% on wood

More details

Tramex Professional Tramex Professional Digital Wood Moisture Meter 126250

Tramex Electrode 200mm HH14SP200 - Hand Held Electrode (with cable & 200mm pins)

  • HH14SP200 - Hand Held Electrode (with cable & 200mm pins)

More details

Tramex Electrode 200mm HH14SP200 - Hand Held Electrode (with cable & 200mm pins) 126875

Tramex Hole Punch Tramex Hole Punch

  • Tramex Hole Punch

More details

Tramex Hole Punch Tramex Hole Punch 126874

Tramex Thermometer AZ 8868 - Tramex Thermometer

  • Tramex Thermometer

More details

Tramex Thermometer AZ 8868 - Tramex Thermometer 126868

Complete Kit
The RWS is available as complete kit, which includes the following:
- RWS Roof and Wall Scanner,
- Tramex Professional Digital LCD,
- Hole Punch,
- Hand Held Probe,
- Infrared surface thermometer,
- Telescopic Handle,
- Manufacturer certificate,
- User manual,
- Plastic carrying case with foam filling

The RWS roof and wall scanner can also be ordered separately, it will then be supplied including the following:
- RWS Roof and Wall Scanner,
- Telescopic Handle,
- Manufacturer certificate,
- User manual,
- Protective pouch

Dimensions:4.75”x 11” x 3”/125mm x 275mm x 75mm
Weight:4 lbs / 1.8 kg
Sensitivity:Four ranges:EIFS Mode with high and low sensitivity.Roofing Mode with high and low sensitivity.
Accessories:Softshell carrying case.
Telescopic handle for use on roofing only.
Warranty:1 year

Buy Now

Tramex RWS Roof & Wall Scanner
€ 1.280,00 
Tramex Roof Inspector Kit (RWS, CMEX5, HH14SP200-B, RHP-NW-B, IRT2, HPW, MAXRIK)
€ 2.720,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability: Available: 1 - 3 days, Delivery time: 1 - 3 weeks, special order request