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Electronic Leak Detection (ELD), based on holiday testing testing technology, is a non-destructive test method conducted using a high voltage DC holiday detector on protective coatings that attempts to create an electric circuit through a non-conductive membrane to find coating film discontinuities that are not readily visible.  Where electrical flow is allowed to form a circuit and test area is termed as conductive, indicating the presence of discontinuities such as pinholes and voids. 

Holiday testing is a dry and non destructive test that is considered a more time efficient and practical alternative to flood testing. Unlike flood testing, holiday testing can also work on vertical surfaces such as shower walls, retaining walls and tank walls.

Holiday testing has been applied on internal wet areas (bathrooms, ensuites, laundries), balconies, roofs, planter boxes, retaining walls, podiums, basement systems, lift pits and other areas where waterproofing is applied.

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