One of the primary functions of drainage mats is to prevent water accumulation. Without adequate drainage, water can seep into the joints between pavers, leading to erosion, mold growth, and ultimately damage. This accumulation can also lead to shifting of the pavers, creating an uneven surface that can be dangerous for pedestrians and vehicles. By installing drainage mats under pavers, homeowners and landscapers can significantly reduce the risk of these issues, prolonging the life of the installation.