In everyday steel coating applications, coating performance is related to the profile height of the steel surface. DeFelsko offers two types of equipment for measuring peak and valley surface profile heights.
Why Surface Profiling Is Important
Steel is often blast cleaned or roughened before painting. The peak-to-valley height of the resulting surface profile is an important factor in the performance of the applied protective coating. Low profile may reduce coating bond strength (adhesion). Too high and the peaks may not get enough coverage and may rust prematurely. If the profile is too high, more paint may be required which can be expensive. For these reasons, the surface profile should be measured prior to coating application to ensure that it complies with contract specifications.
