Pre-applied waterproofing membranes are products that are applied prior to the concrete pour. These products can be applied in a vertical or horizontal fashion, also known as blindside or under slab application. While blindside application is considered to be more complex, it can be chosen to reduce the amount of excavation necessary, often due to surrounding structures or nearby property lines. Pre-applied waterproofing is a huge cost saving because it mitigates the need for future treatments of leaks that may arise from shifting water tables and groundwater. It is a long-term solution for savvy building owners to incorporate into their building envelope.