Testing & Assessment
Mold Inspection & Testing in Portsmouth, NH
An assessment establishes whether mold is present, where it is growing, and how far it extends — before anyone quotes removal. A mold inspection locates moisture and growth that a room-level look would miss, reading wall cavities, subfloor, and the areas behind finished surfaces. The result is a scope: what is affected, what has to come out, and what is driving the moisture.
Most people reach this page after noticing something rather than after something broke: a smell that returns, a stain that spreads, a room that feels damp. An inspection answers what is actually there and where the moisture comes from, which is the information every later decision depends on. Several states, Texas among them, keep assessment and remediation as separate licensed roles specifically so the party identifying the problem is not the party selling the fix. Nothing here is medical advice — if you have health questions, those are for a clinician.
Every pro in our network is licensed and insured in New Hampshire.
Frequently asked questions
Does the tide affect a basement that is nowhere near the water?
Near the older core it can. A tidal river holds groundwater up along its corridor and that level moves with the tide and the season, so a basement can be damp on a dry week for reasons that have nothing to do with rainfall. Distance from the bank matters less than elevation.
Rain gets in during a storm but not during ordinary rain. Why?
Pressure rather than volume. Coastal storms drive rain nearly horizontally and push it against joints that only ever needed to shed water falling downward. A detail that performs for a year of normal rain can leak in an hour when wind puts the water under pressure.
What should be expected of a period basement here?
That it moves moisture. Stone and lime mortar were built to breathe, and no damp-proof course exists in that construction. The realistic aim is controlling what reaches the outside of the wall and managing humidity in the space, not converting it into a modern barrier.