
Concrete Surface Preparation
Preparation connects the condition of the existing slab to the requirements of the new floor. Assessment, removal, mechanical profiling and cleaning are planned as one sequence rather than isolated steps.
What preparation actually involves
Concrete preparation has three jobs: remove anything the new floor cannot bond to, expose sound concrete, and leave a surface texture the selected product requires. Old paint and coatings, sealers, adhesives, oil contamination and the weak top layer of a dusting slab all have to come off. Depending on the condition, that means diamond grinding, shot blasting or coating and adhesive removal, followed by repairs to cracks, spalls and joints.
Surface profile (CSP)
Coating manufacturers specify the texture they need using the Concrete Surface Profile scale published by the International Concrete Repair Institute, from CSP 1 (nearly smooth) to CSP 10 (very rough). Thin coatings and sealers usually call for a light profile; thicker broadcast, mortar and urethane cement systems usually need a heavier one. Matching the profile to the product data sheet is part of CSP surface profiling.
Moisture and slab condition
Moisture moving up through a slab can lift a coating that was otherwise installed correctly. Before installation, the slab is checked for signs of moisture and tested where the product requires it, and moisture and substrate systems are considered where readings are high.
Common questions
Can acid etching replace grinding?
For most resinous floors, no. Etching does not remove sealers, coatings or weak surface material and can leave residue. Mechanical preparation gives a more consistent, measurable profile.
Does a brand-new slab need preparation?
Yes. New concrete often has a smooth, weak surface layer and curing compounds that block adhesion, so it still needs mechanical preparation before coating.
Provide photos and the intended finish or manufacturer specification. We will identify weak areas, joints and moisture considerations that could change the preparation scope.
This is part of our surface preparation & grinding service. Related work: concrete grinding, CSP surface profiling and moisture & substrate systems.
Further reading: Concrete Surface Preparation: Why Grinding and Shot Blasting Come Before Every Coating and New-Build Garages in Vaughan: Why a Clean Slab Still Needs Preparation.






