International Institute of Waterproofing

The International Institute of Waterproofing (IIW) is a professional organization dedicated to promoting expertise and best practices in waterproofing and related construction methods. It offers training, certification, and technical support to ensure buildings and structures are protected from water infiltration, which can cause damage and deterioration. The IIW brings together industry professionals across the globe to share knowledge, develop standards, and advance waterproofing technologies, helping to improve building durability and safety worldwide.