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How do you convert WFT to DFT?

DFT = WFT × (% Volume Solids / 100). Conversely, WFT = DFT / (% Volume Solids / 100). The volume solids percentage is found on the paint data sheet.

What is the typical DFT for epoxy primer?

Epoxy primers are typically applied at 75-125 microns DFT. Two-coat systems may go up to 250 microns total. Always follow the paint manufacturer's recommended DFT range.

wft dft · Engineering Calculator

WFT to DFT Calculator for Epoxy Primer at 125 Microns DFT

Formula

WFT = DFT / (% Volume Solids / 100)

Governing Standard

SSPC-PA 2, ISO 19840

Required Inputs

Target DFT (microns)
Volume solids percentage (%)
Thinner addition (%)

Output

Required wet film thickness (WFT) in microns

Notes

For an epoxy primer with 65% volume solids and a target DFT of 125 microns, the required WFT is 192 microns. Use a wet film gauge to verify application thickness during painting.

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