CALI Complete Pro underlayment is made for all floated floor installations, ensuring robust vapor protection and a longer-lasting flooring experience. Its advanced design reduces in-room and impact sounds for quieter, more serene spaces. The underlayment provides dual benefits of thermal insulation, keeping rooms warmer in the winter and cooler in the summer, while also cushioning to reduce creaks and smooth out minor subfloor imperfections. For spaces with concrete subfloors, the use of metallized tape is required for optimum moisture-proofing. This product is odorless and non-toxic – the perfect choice for healthy homes.