A company can claim to have the best products and systems, however, no matter what type of overlay work they do, or what type of concrete stencilling, the most critical factor contributing to long-term performance is adequate surface preparation.
As expert installers, we have discovered that the best process is thorough mechanical surface preparation. This is a change from 10-20 years ago when most installers would rely on acid etching, chemical cleaners and power washing to adequately prepare the surface.
Barefoot Concrete recommends mechanical surface preparation, this is the best option, however, due to a client’s budgetary constraints, we can still adequately prepare the surface by pressure cleaning and chemical cleaners, but there is a greater risk of delamination. We have found that 90% of all concrete that needs to be prepared for an overlay requires a minimum concrete surface profile (CSP) of 3 (light shot blast), or 2 (grinding), as recommended by the International Concrete Repair Institute in order for the proper bonding of a concrete coating or overlay.
Barefoot Concrete not only recommends the use of the right equipment but to also to use a better system of primers and repair products. As part of Barefoot’s preparation process, we not only recommend mechanical surface preparation but also recommend the use of a densifier as a moisture blocker as best practice for adhesion and moisture control.
We know that a callback, for both the customer and the applicator, because of a system failure caused by moisture, is much worse than the upfront cost per square meter for a moisture-control solution as part of the overlay system.