Abstract: The invention relates to conductive multi-layer materials for leak detection applications. The electrically conductive multi-layer material comprises a woven glass fibre web (2) having a binding agent (4) and a fire retardant compound (5), which is impregnated with electrically conductive carbon particles (6), wherein one side of the glass fibre web (2) is coated with metallic electrically conductive layer (10) by the means of vacuum deposition.

Abstract: The invention relates to electrically conductive materials for leak detection applications. The conductive multilayer materials are especially suitable for water tightness inspections on roofs and other leak proof structures. Electrically conductive material (1) for applying it under a non-conductive water insulation layer comprises a nonwoven PET (Polyethylene terephthalate) or PP (Polypropylene) polymer layer (2) and a conductive particle coating (3) consisting of electrically conductive carbon and/or metal particles (4), uniformly covering complete surface of the polymer layer (2), and an acrylic binder (5). The invention further relates to the method of manufacture of said electrically conductive material as well as the use thereof.

Abstract: The invention relates to conductive multi-layer materials for leak detection applications. The electrically conductive multi-layer material comprises a woven glass fibre web (2) having a binding agent (4) and a fire retardant compound (5), which is impregnated with electrically conductive carbon particles (6), wherein one side of the glass fibre web (2) is coated with metallic electrically conductive layer (10) by the means of vacuum deposition.