Which class of water indicates the presence of deeply held or bound water?

Deeply held or bound water is characterized by its association with materials that have high absorbent capacities, typically found in porous building materials like concrete, brick, or plaster. This type of water cannot be removed through standard drying methods and requires specialized drying techniques.

Class 4 water classification specifically pertains to situations where materials have absorbed moisture to the point where deeply held water is present. In this case, the materials are often saturated to a level that basic extraction methods would not suffice to achieve adequate drying. Therefore, drying processes for Class 4 typically involve advanced techniques such as the use of desiccants or prolonged drying times in conjunction with controlled environmental conditions to effectively address the deeply held moisture.

This understanding of Class 4 water is critical in restoration scenarios, as it impacts the overall drying strategy and necessary equipment, ensuring effective remediation and prevention of further damage or mold growth due to residual moisture.