Getting ready for a DCOF test isn’t just about using the right tools—it starts with proper surface preparation. The Dynamic Coefficient of Friction (DCOF) test is a widely accepted method used to measure how slippery a floor may be under wet conditions. It’s often used to ensure compliance with standards like ANSI A326.3 and to help reduce slip-and-fall risks in public and commercial spaces.
But here’s the catch: even the best equipment won’t give you accurate results if the surface isn’t ready. That’s why surface prep is such an essential part of the process.
Let’s explore the essential do’s and don’ts you should follow before performing a DCOF test, so your results are consistent, valid, and ready for documentation.
✅ Clean the Floor with the Right Products
Start by cleaning the floor using a neutral pH cleaner. This helps remove dust, oils, soap films, and residue that could interfere with the results. Avoid high-alkaline or acidic products, as they may leave behind chemical traces.
Once cleaned, rinse the floor with clean water to ensure no cleaner remains. Any residual film could affect how the test equipment interacts with the surface, giving you false readings.
❌Use Wax, Polish, or Sealants Before Testing
Never apply waxes, sealants, or polishes prior to a DCOF test unless those treatments are part of the floor’s daily use. These products can alter the natural coefficient of friction, leading to artificially high or low readings.
The goal is to simulate how the floor will behave during real-world use—not after it has been treated to improve performance temporarily.
✅ Follow the Manufacturer’s Recommendations
Especially with new installations, it’s important to wait until the flooring material is properly cured. Some tiles or materials need a certain number of days before they reach their intended durability and finish. Always refer to the manufacturer’s installation and maintenance guidelines before scheduling a DCOF test.
❌ Ignore Small Contaminants
You might think the floor looks clean, but even a small bit of grease, dust, or cleaning product residue can throw off your results. Always inspect the surface closely and clean any spots that look suspicious. It’s better to take a few extra minutes than risk inaccurate data.
✅ Keep the Environment Controlled
Test in an environment that reflects everyday conditions. Room temperature and humidity can influence how materials respond. If possible, avoid testing in spaces that are under construction or subject to weather changes. Make sure the flooring is secure and stable, especially if it’s raised or modular.
❌ Rush the Process
Surface preparation takes time and attention. Rushing can lead to missed contaminants or uneven cleaning. Be patient with the process—it’s worth it for valid test results and peace of mind.
✅ Test in Multiple Areas for Accuracy
Slip resistance isn’t uniform across an entire floor. Traffic patterns, cleaning frequency, and moisture levels all affect performance. Test in several key areas—such as near entrances, kitchen spaces, or frequently used walkways—for a more complete picture of your surface’s safety.
✅ Keep a Record of Preparation Details
Documentation is essential. Note the products used, cleaning methods, dates, and any issues discovered during prep. This supports your DCOF test results and provides a reference for future testing or audits.
Why Surface Prep Matters
Proper surface preparation is the foundation of a reliable DCOF test. Whether you’re meeting safety standards or protecting people from slips and falls, getting it right ensures that your results reflect real-world performance not just a temporary clean spot.
Taking shortcuts in preparation can lead to expensive re-tests, liability issues, or even compliance failures. With just a little effort up front, you can ensure that your testing is effective, trustworthy, and professionally executed.
