ATR Floors and More
Commercial concrete moisture testing in a Twin Cities facility
Commercial Moisture Mitigation

Commercial Moisture Mitigation in Minneapolis, St. Paul & the Twin Cities

Flooring failures cost more than the floor itself — they cost the schedule, the tenant relationship, and the credibility of every contractor who signed off on the substrate. When adhesive delaminates six months after installation or LVT planks start cupping in a brand-new multifamily build, the root cause is almost always the same: uncontrolled moisture vapor transmission through the slab. ATR Floors tests, diagnoses, and mitigates commercial slab moisture before your finished floor goes down — not after it fails.

Excess Slab Moisture

Address moisture conditions before flooring goes down

Flooring Bond Failures

Investigate moisture-related adhesive and flooring problems

Installation Delays

Plan mitigation when moisture holds up the job

Problems We Solve

Concrete Moisture Testing & Mitigation Minneapolis, St. Paul & the Twin Cities

Relative humidity (RH) testing (ASTM F2170) measures humidity inside the concrete slab. Calcium chloride testing (ASTM F1869) measures moisture vapor released from the surface. We use the testing methods required for your flooring system and install compatible moisture mitigation when needed.

Moisture Is Causing Flooring Failures

The problem

Adhesive is releasing, resilient flooring is bubbling, wood is moving, or coatings are peeling over a damp slab.

How ATR solves it

ATR tests the concrete, identifies the moisture condition, and specifies a mitigation system for the flooring assembly.

The Slab Exceeds Manufacturer Limits

The problem

ASTM test results do not meet the adhesive or flooring manufacturer’s published installation requirements.

How ATR solves it

ATR selects and installs a compatible mitigation system based on test results and flooring requirements.

The Flooring Warranty Is at Risk

The problem

Missing moisture documentation can put flooring warranty coverage at risk.

How ATR solves it

ATR documents testing and mitigation to support the specified flooring requirements.

An Existing Failure Needs a Root Cause

The problem

The visible floor has failed, but the team needs to determine whether moisture, preparation, or another condition is responsible.

How ATR solves it

ATR evaluates slab conditions before recommending preparation, mitigation, and replacement steps.

How We Mitigate

How We Mitigate Moisture

Moisture problems in commercial concrete are invisible until they are expensive. A slab that reads 80% RH at the time of pour will still read above manufacturer thresholds 90 days later in many Minnesota conditions. We test, diagnose, and mitigate before the finished floor goes down.

Pre-Installation RH Testing (ASTM F2170)

Drill test holes per ASTM F2170 frequency, install in-situ probes at 40% slab depth, allow 72-hour equilibration, and document in a formal test report suitable for spec files and manufacturer warranties.

Calcium Chloride Testing (ASTM F1869)

For specs that reference the MVER test, we perform the 60–72-hour dome test per ASTM F1869. We test to whichever standard your spec requires — or both, when belt-and-suspenders documentation is needed.

VersaGuard™ Molecular Barrier

Our preferred system. A reactive molecular barrier that penetrates 2–4mm below the surface and reduces RH ≥10%. Bonds within the concrete matrix itself rather than sitting on top like a topical membrane.

Epoxy Moisture Barriers

For applications requiring a hard topical membrane (typically under tile, stone, or high-build coating systems), two-component epoxy moisture barriers reduce MVER below manufacturer thresholds.

Pre-Coating Mitigation

Epoxy and polyurethane floor coatings are among the most moisture-sensitive systems in commercial flooring. We test before every epoxy or industrial coating project and mitigate as needed before the first coat is applied.

Pre-Tile and Pre-LVT Mitigation

The most common failure scenarios we see — adhesive systems for resilient flooring are particularly sensitive to vapor. Our turnkey packages bundle testing, mitigation, and floor covering so there is no gap in accountability.

Why ATR

Why Choose ATR Floors for Moisture Mitigation

Preparation Included

We handle the concrete preparation needed for the selected mitigation system, including surface cleaning, profiling, and repairs.

Solutions Matched to Your Floor

We select moisture mitigation systems based on slab conditions, project specifications, and the requirements of your flooring and adhesive.

Documented Test Results

Clear moisture readings and test locations, evaluated against your flooring system’s requirements to help guide the next steps.

One Flooring Partner

From moisture testing and mitigation to underlayment and finished flooring, ATR coordinates the work under one scope.

FAQ

Frequently Asked Questions

What relative humidity level requires moisture mitigation?

Most floor covering manufacturers set their warranty threshold between 75% and 80% RH measured per ASTM F2170 at 40% slab depth. Some adhesive systems allow up to 85% RH with specific primers. We test to the manufacturer's standard and mitigate to their threshold. If your spec does not reference a specific RH limit, we default to 75% RH as the conservative threshold.

How long does moisture testing take?

ASTM F2170 in-situ probe testing requires a minimum 72-hour equilibration after probes are installed. Hole drilling, probe placement, and initial readings take 2 to 4 hours for a typical 5,000 sq ft floor. Calcium chloride testing (ASTM F1869) requires 60 to 72 hours of dome exposure. Plan for testing to span 3 to 4 calendar days.

How long does the mitigation system need to cure before flooring is installed?

VersaGuard molecular barrier is typically ready for floor covering installation within 24 hours. Epoxy moisture barrier systems cure in 12 to 24 hours depending on ambient temperature and product formulation. We schedule mitigation application so the cure period aligns with your project timeline.

Do you provide test reports suitable for our spec file?

Yes. Every moisture testing project receives a formal report including probe locations mapped to floor plan, individual probe readings, ambient temperature and humidity at time of reading, pass/fail assessment per the specified standard, and recommendations. Reports are formatted for closeout documentation, manufacturer warranty submissions, and architect spec files.

Can you perform testing and mitigation after hours?

Yes. Most of our commercial moisture testing is performed during off-hours to avoid disrupting facility operations. Probe installation, mitigation application, and cure monitoring are all scheduled around your operational windows.

Stop Guessing. Start Testing.

Include slab age, size, and existing floor covering type for a testing and mitigation scope. We respond within one business day.