Substructure waterproofing often involves the use of waterproofing membranes. There are different types of membranes, including bituminous membranes, PVC membranes, and liquid-applied membranes. The choice of membrane depends on factors such as the type of structure, soil conditions, and the presence of water tables. Bituminous membranes are commonly used for substructure waterproofing due to their durability and resistance to soil chemicals.

Proper drainage is essential in substructure waterproofing to prevent the accumulation of water around the structure. Drainage boards or dimpled membranes are often installed to create a drainage path, allowing water to move away from the structure. Additionally, protection layers, such as geotextiles, are used to shield the waterproofing membrane from potential damage during backfilling or construction activities.

Effective waterproofing in substructures requires attention to details such as joint sealing and penetration points. Construction joints, pipe penetrations, and other openings must be carefully sealed using appropriate waterproofing materials to prevent water ingress. The detailing of waterproofing around structural elements is critical to maintaining the integrity of the waterproofing system.