Concrete Coatings: Start with the Surface

A new finish cannot answer every concrete problem

Stains, peeling coatings, cracks, and a rough-looking surface can make it tempting to start with a color choice. They can also signal different preparation or repair needs. A decorative coating should not be assumed to resolve moisture, slab movement, drainage, or structural concerns.

Start with the substrate and intended use

A concrete-coating plan identifies the surface condition first, then the system that may suit it. Describe the existing finish as unknown when necessary. An installer needs to assess the slab and the proposed product requirements before deciding what can remain, what must be removed, and which repairs belong in the scope.

Define whether the area is indoors or outdoors, covered or exposed, wet or dry in use, and subject to vehicles or equipment. A garage-floor proposal is not automatically suitable for a patio, pool surround, commercial kitchen, or other different exposure.

Sika’s surface preparation guide discusses substrate assessment and removal of contaminants. Follow the requirements for the specified coating system. Source reviewed September 27, 2026.

Get a scope that separates appearance from repair

• Clear preparation: cleaning, mechanical preparation, and old-finish removal are described separately.
• Visible exclusions: repairs, moisture-related work, joints, and changes to levels or drainage have an explicit place in the proposal.
• A useful finish choice: sample, texture, exposure, and cleaning needs inform the specified system.
• Transparent pricing: fixed work and provisional allowances can be compared on the same basis.

Document, assess, specify, then schedule

1. Document: sketch the area and mark stains, cracks, peeling, water observations, thresholds, and drains. Keep photographs for the contractor.
2. Assess: obtain the proposed checks for the substrate and existing finish. Confirm who interprets findings and authorizes added work.
3. Specify: name each layer, surface preparation method, repair allowance, and treatment at edges and joints.
4. Schedule: agree on access, cleanup, curing restrictions, and care before work starts.

Example: an older painted floor with a peeling patch needs a removal and assessment decision before pricing its new finish. Keep the repair allowance separate so finding damage below the old paint does not become an unexplained extra.

Continue with garage planning, residential project planning, or commercial project planning for the use-specific brief.