Concrete preparation is the foundation of a garage floor coating system
Coatings need a clean, sound, properly profiled surface. Mechanical preparation is commonly used to remove weak surface material, open the concrete, eliminate incompatible coatings, and create the profile required by the selected resin system.
Preparation may include diamond grinding, shot blasting in suitable commercial settings, edge grinding, vacuuming, degreasing, removal of paint or sealers, filling surface defects, and evaluating moisture or contamination. The exact method should match the product data and the floor condition.
A quick acid wash or pressure wash is not a universal substitute for mechanical profiling. Ask the estimator how the concrete will be prepared, what dust control is used, and what happens if hidden coatings, oil, moisture, or damaged areas are found.
Questions to cover during an estimate
- Diamond grinding and edge preparation
- Paint, sealer, adhesive, and weak-coating removal
- Oil, grease, dust, laitance, and contamination control
- Moisture testing or mitigation questions when appropriate
- Cracks, joints, pitting, spalls, and patching before coating
Topics covered on this page
Common floor-coating questions
Is pressure washing enough before a garage coating?
Not in many professional resinous-floor systems. The surface usually needs a specified profile and removal of contaminants or weak material, which often requires mechanical preparation.
What if the floor already has paint or sealer?
Existing material should be identified and tested for adhesion. Weak or incompatible coatings generally need removal before a new system can bond directly to sound concrete.