Q: What wet film thickness (WFT) is typically achieved using a ¼-inch V-notched squeegee for coatings?
A: According to industry guides, a ¼-inch V-notch can deliver around 20 mils wet film thickness under normal conditions.
Q: Why choose an EPDM blade for a notched squeegee among other rubber compounds?
A: EPDM offers excellent resistance to chemicals, solvents and UV exposure, and retains its notch definition longer, which supports consistent film delivery in demanding coating applications.
Q: What factors can affect the actual coverage and mil thickness when using this tool?
A: Coverage is influenced by substrate porosity, applicator pressure, angle and speed, material viscosity and whether a back roll is used. As a result, actual thickness may vary from nominal values.
Q: How can I tell when the notches on the squeegee are worn and need replacing?
A: When the notch edges round off, you see inconsistent ridges, or the coverage per gallon increases, those are signs the blade’s effectiveness is diminished and should be replaced.