What is the optimum air humidity for Laminate Flooring? August 19, 2019 10:29 Updated A relative air humidity of between 40 % and 70 % Related articles How do I install Laminate Flooring around fixed structural components? What is the under-floor evenness deviation? Laminate Flooring doormats and clean off zones Do wood based floors require acclimatisation? What is the expansion requirements for Laminate Flooring?