Best Moisture Meters for Epoxy Flooring (How to Test Concrete the Right Way)
- 2 hours ago
- 2 min read
Updated: 15 minutes ago
Moisture is one of the leading causes of epoxy flooring failure. Even the best epoxy system will bubble, delaminate, or cloud if the concrete slab contains too much moisture. That’s why professional installers rely on accurate moisture meters before applying any coating. In this 2026 guide, we break down the best moisture meters for epoxy flooring and explain how to test concrete the right way to avoid costly callbacks.
A favorite among professionals, the Wagner Rapid RH system delivers highly accurate internal relative humidity readings using in‑situ probes. This method is widely recognized as the industry standard for concrete moisture testing. The L6 sensors provide fast readings and reduce waiting time, making them ideal for contractors with tight schedules.
Known for its reliability and ease of use, the CME5 is a non‑destructive meter that instantly measures the moisture content of concrete slabs. It’s perfect for quick assessments and pre‑installation checks and is widely used in the epoxy, flooring, and restoration industries.
This versatile moisture meter offers both pin and pad readings, allowing installers to test concrete, wood, and various building materials. It’s especially helpful for epoxy flooring contractors who work across different environments and substrates.
An affordable and accurate option for small contractors or DIY epoxy installers. The MO55 provides both pin and pinless readings, making it a flexible tool for evaluating surface moisture and deeper slab conditions.
How to Test Concrete the Right Way
To ensure a successful epoxy installation:
Step 1: Clean the Surface
Remove dust, oil, and debris to prevent false moisture readings.
Step 2: Test Multiple Areas
Concrete moisture varies across the slab. Test near walls, drains, and high‑traffic zones.
Step 3: Follow Manufacturer Limits
Most epoxy systems require moisture levels below specific thresholds (often under 75% RH or specific MVER rates).
Step 4: Combine Testing Methods
Use both non‑destructive surface meters and in‑situ probes for reliable results.
Step 5: Document Results
This protects your business from liability, especially with commercial clients.
Protect Your Epoxy Flooring Business
Moisture‑related epoxy failures can lead to expensive disputes, repairs, and lost revenue. Protect your tools, team, and business with proper contractor insurance. Wexford Insurance offers specialized coverage for epoxy and concrete coating professionals. Get a fast quote before your next project and ensure peace of mind on every job.