Subsurface drying targets moisture below an exposed surface or within an assembly. The method depends on access, material condition and the source of wetting.
What this means at your property
A floor surface may conceal retained moisture below the finish. Some assemblies can be considered for controlled drying, while others require removal to reach damaged or contaminated material. The existence of drying equipment does not establish that a particular floor can be saved.
What should support drying in place?
Ask how the affected layers were assessed, where measurements will be taken and what findings would require a change of plan. Keep the completion criteria with the subsequent flooring repair records.