Leak & Moisture Detection

Hidden moisture is the root cause of most mold problems. We locate it precisely—without tearing into walls—so you can fix the source, not just the symptoms.

About

Why Moisture Detection Comes First

Mold needs moisture to grow, and moisture hides. We use non-destructive instruments to map water through walls, floors, and ceilings—and thermal cameras to see temperature anomalies that indicate active leaks or condensation—giving you a precise location before any repair work begins.

Moisture detection helps you:

—Pinpoint the exact source of a leak before demolition
—Map moisture spread behind walls and under flooring
—Identify condensation-prone areas before mold appears
—Confirm repairs were effective after water damage is addressed

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Methodology

How We Detect Moisture

Non-destructive tools that locate water without cutting into your property.

We measure the moisture content of walls, floors, and ceilings using both pin-based and non-invasive pinless meters—mapping the full extent of saturation without surface damage.

Best for:

— Drywall, wood framing, and subfloor assessment
— Mapping moisture spread after a water event
— Establishing baseline readings for monitoring

Our thermal cameras detect temperature differentials across surfaces. Water-loaded materials hold heat differently than dry materials, making leaks and saturated zones visible behind finished walls.

Best for:

— Finding active leaks behind drywall without cutting
— Locating plumbing or roof leaks not yet surface-visible
— Identifying condensation zones that feed mold

Every finding is documented with photos, moisture readings, and thermal images. You receive a clear report so contractors, insurers, or property managers can act immediately.

Report includes:

— Moisture readings mapped by room and surface
— Thermal images with annotated anomaly locations
— Probable source identification and next steps

Checklist

When Do You Need Moisture Detection?

Moisture detection is the right first step if:

—You smell mold or dampness but can't find the source
—You've had a plumbing leak, roof leak, or flood
—You're buying a property and want to verify no hidden moisture
—You had water damage and want to confirm the area is fully dry
—Recurring mold keeps coming back after surface cleaning

Moisture detection is often the fastest and most cost-effective way to scope a mold problem before committing to testing or remediation.

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Detection Services

Our Detection Methods

Two complementary tools that together give a complete picture of moisture conditions in any building.

1Thermal Imaging

Infrared cameras reveal temperature anomalies that indicate hidden leaks, condensation zones, and moisture paths behind finished surfaces.

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2Moisture Detection

Pin and pinless meters precisely measure moisture content in walls, floors, and ceilings—mapping the full extent of saturation without destructive investigation.

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Mold inspection Ann Arbor FAQ

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Ann Arbor's student rental market is concentrated in older homes near campus that see high occupancy, rapid tenant turnover, and inconsistent maintenance between leases — conditions that let mold develop and persist unnoticed. The most common trouble spots are basements used as extra bedrooms or storage, bathrooms with poor ventilation and heavy shared use, and window and exterior-wall areas in homes with aging weatherproofing. Because leases often turn over in a single August week, problems left by the previous tenants can carry into the next lease without ever being addressed. A quick mold inspection before signing — or right after a reported leak — protects the tenants' health and the deposit, and gives documentation if a dispute arises with the landlord.

The Old West Side Historic District, with most of its homes built between 1860 and 1914, is representative of Ann Arbor's oldest stock — Queen Anne Victorians, Craftsman bungalows, and Tudors that have stood for a century or more. Homes of this age typically have original stone or block basement foundations that predate modern waterproofing, aging plaster wall assemblies that hold moisture, and roof and attic systems modified many times. Because the district is on the National Register and locally regulated, exterior changes are reviewed, which can make drainage, window, and ventilation upgrades slower to carry out — so moisture tends to accumulate. An inspection of a historic Ann Arbor home focuses on the original basement, attic ventilation, and any additions or conversions.

Yes. Allen Creek is a largely enclosed urban drainageway whose downstream reach, near its outlet to the Huron River, is undersized — the roughly 90-year-old enclosure handles only about a 2-year storm, and modeled 100-year flood depths reach 8 to 9 feet in the commercial and residential areas near the discharge. Properties in the mapped floodplain, including parts of downtown and the lower-elevation neighborhoods, carry both direct flood risk and chronic groundwater exposure, and high Huron River levels can flood Island Drive and Canal Street apartments. Any home or building in the Allen Creek floodplain or near the river that took on water — or hasn't had a recent basement assessment — should be a priority for inspection.

They do. Ann Arbor's cold, snowy winters drive freeze-thaw cycling and ice dams — ridges of ice that form at the roof edge when attic heat melts snow that refreezes at the eaves. Ice dams back water up under shingles and into the roof deck, wall tops, and ceilings, where it feeds mold that isn't visible until staining or odor appears indoors. Older Ann Arbor homes are especially vulnerable because their attic insulation and ventilation often predate modern standards, letting warm air reach the roof sheathing and condense there in winter. Checking the attic and upper walls after a hard winter, and correcting ventilation, is part of keeping these homes mold-free.

Ann Arbor's established neighborhoods are full of pre-1960 homes with original stone or block basement foundations that were never built to modern waterproofing standards. After decades of Michigan groundwater pressure, freeze-thaw cycling, and heavy spring snowmelt, seepage through foundation walls and floor slabs is common, and many of these basements are finished or used for storage in ways that trap the resulting dampness. Because the moisture load is chronic rather than a single dramatic leak, mold can grow behind paneling, under carpet, and along sill plates for years unnoticed. A basement moisture assessment distinguishes normal older-home dampness from an active drainage or foundation problem that needs correction.

A large share of Ann Arbor's rental stock is older single-family homes divided into multiple units for students and young professionals. These conversions often add bathrooms, kitchens, and bedrooms in basements and attics — the very spaces most prone to moisture — and route new plumbing through old walls, creating hidden leak paths. High combined occupancy raises indoor humidity, and a moisture or mold problem in one unit can migrate through shared walls and floors into another. For owners and managers, inspection between tenancies and after any reported leak catches these issues before they spread; for tenants, it documents conditions at move-in.

Because so much of Ann Arbor's housing is pre-1960 — and in historic districts, often pre-1914 — a pre-purchase inspection here goes beyond a surface walkthrough. The key areas are the original stone or block basement for seepage and past water staining, the attic for ice-dam damage and ventilation-related condensation mold, and any basement or attic converted to living space where older water damage may have been covered over. If the property is a former or current rental, it's worth checking added bathrooms and kitchens for hidden leaks, and confirming floodplain status near Allen Creek or the Huron River. An independent inspection — with no stake in remediation — gives a clear moisture picture before closing.

Contact

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Location

24H Mold Inspection of Ann Arbor

Phone

(734) 706-4508

info@24hmoldinspection.com

Service area neighborhoods

Kerrytown
Burns Park
Old West Side
Water Hill
Germantown
Lower Burns Park
Northeast Ann Arbor
Pittsfield Township (adjacent)