Free tools for estimating ASTM test quantities, moisture vapor emission rates, dew point, and concrete drying time. Built for flooring contractors, builders, property managers, and homeowners planning a concrete moisture test or flooring installation in Southern California.
Book an InspectionEstimate the minimum number of test locations the ASTM method calls for based on slab area.
ASTM F2170 and F1869 call for a minimum of three test locations for the first 1,000 sq ft, plus one additional test location for each additional 1,000 sq ft (or fraction). Enter your slab area to estimate how many test locations the method calls for.
Educational estimates only, not a substitute for professional testing or product specifications.
Convert a calcium chloride dish weight change into an estimated MVER in lb / 1000 sq ft / 24 hr.
Estimate the moisture vapor emission rate (MVER) from an ASTM F1869 calcium chloride test. Enter the dish weight change, exposure time, and the exposed dish area from your test kit (typical kits list ~0.13–0.20 sq ft; check your kit specifications).
Educational estimates only, not a substitute for professional testing or product specifications.
Find the dew point from air temperature and relative humidity to assess condensation risk before flooring work.
Dew point is the temperature at which moisture in the air condenses on a surface. Flooring adhesives, coatings, and concrete surfaces can fail when the surface temperature drops near the dew point. Enter ambient temperature and relative humidity to find the dew point.
50.5°F (10.3°C)
Low condensation risk
Keep surface temperatures at least 5°F above the dew point during adhesive, coating, or testing work. This tool is for general estimation only.
Educational estimates only, not a substitute for professional testing or product specifications.
A rough estimate of how long a slab may take to dry before flooring, based on thickness and site conditions.
A rough estimate of how long a concrete slab takes to dry to a typical target relative humidity before flooring installation. This is an educational estimate based on common rules of thumb (roughly one month per inch of slab drying from one surface under good conditions) and is not a substitute for actual in-situ RH testing.
2.4–4.4 months
Actual drying varies with mix design, aggregate, densifiers, curing, and site conditions. Confirm readiness with ASTM F2170 in-situ RH testing before installation.
Educational estimates only, not a substitute for professional testing or product specifications.
ASTM F2170 calls for three test locations for the first 1,000 sq ft, plus one for each additional 1,000 sq ft or fraction. For 3,000 sq ft that is a minimum of five test locations. Use the test quantity calculator above to estimate for your slab area.
Many flooring and adhesive systems call for a moisture vapor emission rate of 3 to 5 lb per 1,000 sq ft per 24 hours or less, but the applicable limit is set by the product manufacturer. The MVER calculator converts your dish weight change into an estimated rate for comparison.
If a concrete surface or adhesive is at or below the dew point, moisture condenses on it and can affect bond, curing, and test accuracy. Flooring work is typically kept with the surface temperature at least 5°F above the dew point.
A common rule of thumb is about one month per inch of slab thickness when drying from one surface under good conditions, but actual drying time depends on mix design, ambient humidity, temperature, air movement, and whether the slab dries from one or both sides. Confirm readiness with ASTM F2170 in-situ RH testing.
These calculators give estimates. EYLARK provides professional, ASTM-method testing with a certified report.
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