Engineered wood floors are not more stable than Junckers floors. Most buildings are designed for relative humidity levels (RH) between 35%RH and 65%RH; a range of 30% from upper to lower limit. Many engineered wood floor manufacturers guarantee their floors only if the humidity range is 20% from min to max. These floors are less stable, requiring a narrower humidity range to avoid buckling and delaminating. No engineered floor manufacturer guarantees their floor for a humidity range greater than 30%. Junckers floors are guaranteed for use within the normal 35%RH to 65%RH range.