The ProQual Level 3 NVQ Diploma in Testing, Inspecting and Thorough Examination Occupations: Leak Detection in Waterproof Systems is a UK-regulated vocational qualification designed to recognise occupational competence in waterproofing inspection, leak detection, construction testing, and building maintenance. The qualification is awarded by ProQual Awarding Body, with the Office of Qualifications and Examinations Regulation (Ofqual) serving as the regulatory body. It is accredited onto the Regulated Qualifications Framework (RQF).

This Level 3 qualification develops the practical knowledge and workplace skills required to identify breaches in waterproofing systems through non-destructive leak detection techniques. Learners develop competence in interpreting work information, selecting appropriate resources and equipment, following specified working methods, maintaining safe working practices, and identifying potential waterproofing failures without causing unnecessary damage to the structure.

The qualification is particularly relevant to work involving roofs, basements, building envelopes, waterproof structures, and other construction applications where accurate leak detection is essential. It helps develop technical awareness, methodical inspection practices, attention to detail, and the ability to complete leak detection activities in accordance with project requirements and workplace procedures.

Assessment is assignment-based and evidence-based, requiring learners to demonstrate their knowledge, skills, and occupational competence through appropriate assessment evidence. Workplace performance and authentic evidence are important components of the assessment process, allowing competence to be demonstrated within relevant working environments rather than relying solely on theoretical assessment.

The qualification provides a structured route for individuals seeking to strengthen their professional profile in leak detection, waterproofing inspection, construction quality control, building maintenance, and non-destructive testing, while gaining a nationally regulated Level 3 vocational qualification.