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. 

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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.

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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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