Providence sits at the head of Narragansett Bay, which creates consistently high relative humidity year-round. Summer dew points regularly exceed 65 degrees, meaning outdoor air holds significant moisture that infiltrates homes through foundation vents, attic vents, and air leaks. When that humid air contacts cool basement walls or air-conditioned surfaces, it condenses into liquid water. This condensation hides inside wall cavities, on the back of insulation, and under flooring. Older Providence homes lack the vapor barriers and continuous insulation that modern building codes require, so moisture moves freely through walls. Detecting this concealed dampness requires equipment that measures moisture content inside the building envelope, not just surface conditions.
Providence's housing includes some of the oldest continuously occupied structures in the country, and these historic buildings require moisture detection expertise that respects their construction methods. Plaster walls on wood lath behave differently than drywall. Brick veneer walls have weep holes that can clog and trap water. Slate roofs last a century, but the underlayment and flashing fails long before the slate does. We understand these older building systems because we work with them constantly. Identifying unseen water intrusion in a 1920s home requires knowledge of how those homes were built, where they typically fail, and how to test materials that modern meters were not designed for. Local expertise matters when the building predates modern construction standards.