Our seminar provides an in-depth exploration of the design and specification of waterproofing solutions in accordance with British Standard 8102: 2022, which focuses on the protection of below ground structures from water ingress. The presentation offers a comprehensive overview of waterproofing solutions available, (Types A, B and C), and explicates their strategic placement within projects. It offers a diverse array of strategies to accurately determine the most efficient solutions for waterproofing applications. This includes invaluable insights into different grades of waterproofing, prevalent challenges, and effective strategies to mitigate risk in the design process.