Detect Systems New Zealand
Why Companies Choose Detec New Zealand Over Other Leak Detection Methods
IntegriScan is a point in time, quality control Electronic Leak Detection testing service that confirms the integrity of the waterproofing/roofing membrane installation
- Test 100% of waterproofing/roofing membrane versus other "hunt and peck" methods
- Reliably tests vertical surfaces
- Wall junctions, perimeter details and membrane penetrations are easily tested
- Tests up to 3,700 square meters per day
- Detects hard to see breaches
- Breach repairs can be re-tested the same day
- Minimal setup time; No perimeter wire required; No need to isolate penetrations
- Audio & visual components for easy and accurate breach location alerts
- Only the ELD method available for testing black EPDM and other semi-conductive membranes
- Can be used for forensic testing of existing roofs
- The most advanced, accurate, reliable, and cost effect Electonic leak detection method available
- A superior alternative to flood testing
- Meets ASTM D8231-19 ( Standard practice for Electronic Leak Methods for detecting and locating leaks )
- Specifically designed for waterproof membrane testing
Flood Testing
- Meet Guide ASTM D 7877 for ELD Testing only. Does not meet current ASTM D8231 practice for ELD
- Large volumes of water wasted
- Speed of test. Flood testing generally takes days
- Flood testing invariably doesn’t test to the entire substrate.
- Doesn’t precisely locate breach in membrane surface
- Possible structural loading stress, for example 50mm water x 20m2 = 1,000 kg
- Predominantly impractical to test vertical surfaces
High Voltage Testing
High voltage was developed in Europe in the 1970s. This method works on horizontals as well as verticals but does not work on semiconductive membranes such as black EPDM. The technician sweeps the metal brush over a completely dry membrane.
Any moisture present will create a false alarm. The equipment releases up to 40,000 volts, and when it passes over a breach, a spark will be seen. High Voltage is not the best for seam void detection as it requires a direct vertical air gap to spark. The spark will not travel horizontally.
It also relies on the technician to calibrate the electronics for the micron thickness being tested. If the electronics are set too low, breaches will be missed. If calibrated too high, it can burn the membrane.
- Meet Guide ASTM D 7877 for ELD Testing only. Does not meet current ASTM D8231 practice for ELD.
- Must be calibrated for membrane thickness. May cause damage or miss leaks if membrane thickness varies particularly with liquid systems.
- Originally designed for testing coating system thickness on metallic surfaces
- Must be performed in perfectly dry conditions
- Cannot test semi-conductive membranes such as black EDPM or Butynol
- Struggles to pick up seam breaches in sheet membranes
Vector Mapping
Low voltage vector mapping was also developed in Europe in the 1970s. This method works on horizontal surfaces but is not feasible for verticals. It also does not work on semiconductive membranes such as black EPDM.
The technician sets up a perimeter wire to isolate the testing area. All grounded objects within the testing area must be isolated. Otherwise, they will be detected as a breach. There must be a continuous water path touching the perimeter wire and every breach within the testing area.
A gap in water coverage can result in missed breaches. As the technician probes the area, the electronics point in the direction of a breach. Any breaches found must be isolated from the testing area; otherwise, they will continue to be detected.
- Meet Guide ASTM D 7877 for ELD Testing only. Does not meet current ASTM D8231 practice for ELD.
- Requires Isolating the testing area and all grounded objects
- Requires a continuous layer of water within the testing area
- The breach must be isolated or immediately repaired when found.
- Not feasible for testing vertical surfaces.
- Cannot test semi-conductive membranes such as black EDPM or Butynol
Detec New Zealand
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Detec New Zealand provide smart building technologies and services to help maintain high-performance structures free of hidden moisture intrusion damages
How Does It Work?
Integriscan Demo – The Integrity of your membranes deserves the most accurate testing system.
Membrane Breaches – Fast Location, Faster fix, Less damage, Less cost.
The IntegriScan is the most accurate and advanced Electronic Leak Detection testing method available
Our Location
We are located in Wellington, NZ
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