We would always recommend the use of damp proof membrane. Regardless of the flooring that may feel perfectly dry, it will always contain a certain level of damp. As a result it will reduce the longevity of your floors and may cause chipping, lifting and other issues.
As we specialise in damp proof membrane, TP Flooring & Coatings Ltd can inspect the current state of the flooring and offer the most suitable and effective solutions.