Vector Mapping Roof

Electrical field vector mapping efvm is suitable for electrically conductive and electrically grounded roof decks such as steel and reinforced concrete roofs efvm can be used on wooden roofs or precast concrete slab roofs if a conductive layer of metal foil or mesh is applied to the roof deck before the waterproofing layer is installed.

Vector mapping roof.

Efvm is unique in its ability to test the integrity of waterproofing membranes. Our vector mapping technicians can help you troubleshoot the toughest waterproofing problems in virtually any application with high or low voltage leak detection technology. Efvm is a low voltage leak test method that creates an electrical potential difference between a non conductive membrane surface and conductive structural deck or substrate which is earthed or grounded. Ild is the world leader in electric field vector mapping efvm technology we created it.

One lead from a pulse generator is connected to this wire loop perimeter. Over the years we have used many forms of interpretive testing methods such as infrared thermography capacitance testing hygrometers vector mapping sampling etc and found them all to have too many limitations. 3 vector mapping felt vmf a non abrasive conductive fabric that can be used under a loosely laid or mechanically fastened roof assembly and embedded into hot liquid membrane systems. As a roofing contractor for 38 years we understand how critical accurate electronic leak detection is for our clients.

By performing the hv test first we find most or all of the puncture type anomalies which may or may not be evident to the naked eye. In low voltage vector mapping the surface of the roof membrane is moistened not flooded to create an electrically conductive medium. Low voltage vector mapping. Vector mapping pinpoints breaches in the roof membrane by tracing the flow of an electric current across the mem brane surface.

Electronic field vector mapping is becoming one of the most popular forms of quality control testing for architects contractors and building owners. A conductive wire loop is laid on the membrane around a section of the area to be tested. The vmg is a specially selected stainless steel grid that serves as a patented conductive medium when used with roofing waterproofing systems that incorporate electric field vector mapping efvm leak detection systems. The electrical signal from the perimeter cable loop searches for an electrical path over the wet area of the roof to any breach within the wetted area thus completing the circuit to the.