Many consider flood testing to be the traditional method of testing the integrity of a roof or waterproofing membrane. But since the late 1980s, electronic leak detection (ELD) methods have been offered as an alternative to flood testing, and recently some building enclosure standards have begun to reference ELD as an option.
ELD methods are useful for finding breaches in a roof or waterproofing membrane. However, when deciding whether to use ELD in lieu of other post-installation membrane test methods such as flood testing, there are a number of factors to consider.
There are several variations of ELD, but all fall into two main types: low voltage and high voltage.