Pre-applied waterproofing also referred to as blindside waterproofing, is installed overtop of shoring substrates, creating a strong mechanical bond with the concrete as it cures to form an integral waterproof barrier. These systems are typically used in below-grade applications such as raft slabs, blindside walls, and tunnels where external access is limited after construction. By forming a continuous seal that prevents water migration, pre-applied waterproofing ensures long-lasting protection for structures exposed to hydrostatic pressure or challenging site conditions.

Pre-Applied Waterproofing

Our foundation series of products are a highly versatile line of eco-friendly, cold applied liquid membranes used for below grade post-applied and pre-applied blind-side and bonded waterproofing applications. The liquid membranes can be applied onto green concrete with as little as a two-man crew.

FOUNDATION WATERPROOFING

NaturaSeal&rsquo;s post-applied waterproofing system, also referred to as open-cut waterproofing, is installed after the concrete has been poured and cured to form a continuous barrier that protects the structure from water ingress. Commonly used on foundations, retaining walls, decks, and other exposed surfaces, these systems include specialized membranes designed to adhere securely to concrete surfaces. Post-applied waterproofing offers a reliable, long-term solution for both new construction and retrofit projects where the foundations are backfilled.

Post-Applied Waterproofing

Underslab vapour barrier systems are traditionally installed beneath concrete slabs to prevent the upward migration of soil gases such as radon, methane, and moisture vapour. The system is also designed to resist hydrocarbons that may be present in the soil. These high-performance hybrid HDPE and PMAE membranes create a continuous monolithic seal that enhance indoor air quality, protects sensitive building materials, and supports compliance with health and safety standards. Underslab vapour barriers are a critical component of gas mitigation strategies across all building types.