I recently purchased a Protimeter BLD5365 Surveymaster. Today, while inspecting a brand new home in South Florida, the Surveymaster indicated that all tiled floor was wet. This cannot be a plumbing issue, considering that all supply lines are overhead (Pex), and the only water lines below the house would be drain lines (which have not been in use). This occurs in both the bathrooms (porcelain/ceramic tiles on thinset) and the main livable space (3/4" white marble on mud). This does not occur in carpeted areas. Would this be the thinset and mud that is still curing? The reading on the Surveymaster is relatively consistent in all areas. It was red and beeping rapidly - and I think between 300-450. The floors were probably put down 1-3 months ago.