Overlay moisture barriers are materials that are rolled out and installed beneath the flooring. These barriers can be crafted from various substances, such as paper, tar, or plastic, and are suitable for use on a range of subfloors, including OSB, particle board, plywood, and concrete. One of the advantages of overlay moisture barriers is their user-friendliness. They can be quickly and easily laid out, making them a convenient option for flooring projects. Whether you’re a professional contractor or a DIY homeowner, overlay moisture barriers offer an efficient choice for shielding your flooring from excessive moisture.