Relevant Products

Below Grade Waterproofing

Below ground structures, such as basement-level parking lots, utility rooms, storage rooms, etc., are vulnerable to moisture. Below-grade waterproofing must be done quickly and correctly, or it will have lasting effects on a building’s foundation. Placing a barrier between the foundation and the surrounding earth will help prevent water infiltration. The waterproof layer may also prevent other harmful contaminants from entering the structure.

Several products exist to waterproof below-grade foundations, from fluid-applied coatings to membrane sheets. Most methods take time to apply and have long cure times. This can shut down job sites for days while the waterproof layer cures before it can be backfilled.

Using a polyurea or hybrid coating over concrete will create a surface impermeable to water. These coatings help decrease the time spent on the below-grade waterproofing process, providing a quick return to service. You can even spray the coating and backfill on the same day. The spray process eliminates seams created by membrane sheets. Spraying the coating also allows it to form to any architectural surface.

Polyurea is moisture insensitive and fast curing. When used in a two-component, high-pressure spray system, it gels in under 15 seconds to create a tough, waterproof membrane. Whether you’re protecting metal, concrete, or masonry, it has great adhesion and flexibility while spraying.
Polyurea hybrids combine the chemistry of polyurea and polyurethane. They are more cost-effective but still as tough and fast setting as pure polyurea. VFI recommends:
- Our 60 D spray coating can be applied in high builds on horizontal, vertical, and overhead surfaces. It’s highly durable and easy to spray in most industrial applications.
- Our other foundation spray coating creates a seamless barrier to waterproof commercial and residential foundations. It acts as an exterior defense and provides good properties to lengthen the life of the structure.

Below-grade waterproofing will continue to be important for structural integrity and life cycle costs. VFI strives to provide you with the most cost-effective and time-efficient methods for long-term protection.