All of our Engineered plank floors can be either floated on to a dry sub-floor using our premium underlay or stuck down using our Polymer adhesive. If you are floating our Tongue and Groove floors then you must glue the joints using regular PVA wood flooring adhesive. We strongly advise that all our engineered herringbone floors be stuck down using our Mapei adhesive. We recommend leaving a 15mm expansions gap around the edges to allow for movement. For more information on how to lay these floors please download our guide in the guide section.