ASTM Concrete Moisture Testing

Q: Who benefits from ASTM moisture testing?

Homeowners planning flooring renovations Property managers maintaining commercial spaces Restoration professionals after water damage events

Hello, I’m Philip from Pegasus Leak Detection. Moisture in concrete may be invisible, but it can cause serious problems if left unchecked. From flooring failures to mold growth, excess moisture puts your investment at risk. At Pegasus Leak Detection, we provide ASTM standard concrete moisture testing to deliver accurate, reliable results for homeowners, restoration projects, and commercial contractors.

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Understanding ASTM Concrete Moisture Testing

ASTM Concrete Moisture Testing refers to a set of standardized procedures developed by ASTM International to measure how much moisture is present in a concrete slab. Because concrete is porous, it can hold water long after it looks dry on the surface. If flooring or finishes are installed too soon, that hidden moisture can cause flooring adhesives to fail, create mold problems, or damage materials.

ASTM testing ensures reliable, repeatable results that builders, flooring contractors, and property owners can trust. These tests are widely recognized across the construction, restoration, and flooring industries.

Why Choose Pegasus Leak Detection?

ASTM F2170 – In-Situ Relative Humidity Test

Probes are placed inside drilled holes within the concrete slab to measure internal humidity levels.

ASTM F1869 – Calcium Chloride Test

A small dish of calcium chloride is placed under a sealed dome to measure the rate of moisture vapor emitted at the slab’s surface.

ASTM D4263 – Plastic Sheet Test

A clear plastic sheet is taped to the slab to detect surface condensation as a quick, qualitative test.

FAQ About ASTM Concrete Moisture Testing

Yes, most flooring manufacturers require ASTM-compliant moisture testing before installation. Skipping this step can void warranties and increase the risk of flooring failure.

Most tests can be set up in a few hours, but accurate results often require a 24–72 hour testing window depending on the method used. For example, the ASTM F1869 Calcium Chloride test requires a minimum of 60–72 hours

f the slab hasn’t dried enough, you may need to allow additional time for curing or consider moisture mitigation systems. Our team can help guide you on next steps.

Homeowners planning flooring renovations

Property managers maintaining commercial spaces

Restoration professionals after water damage events

Contact Philip at Pegasus Leak Detection

Pegasus Leak Detection: Your Local Expert

At Pegasus Leak Detection, we provide ASTM-compliant testing for homeowners, contractors, and commercial property managers. Our team uses advanced tools and methods to deliver precise results — and we explain exactly what those numbers mean for your project.

Need concrete moisture testing in Ventura County? Contact us today to schedule ASTM-compliant testing and protect your project from costly moisture problems.

Text Philip