Choose a system for the slab and its use
A garage-floor coating can change the appearance and cleanability of a concrete floor, but its suitability depends on the slab, preparation, selected products and intended use. Describe vehicle parking, stored equipment, tracked-in water and exposure near the garage door when requesting an estimate.
A coating does not resolve an underlying water problem or structural movement simply by covering the surface. Existing coatings, contamination, cracks and damp areas need assessment before a system is specified.
What preparation should establish
The written scope should explain how the existing surface will be prepared and what repairs are included. The preparation method and required surface profile must suit the chosen system. Sherwin-Williams provides flooring project-preparation documents for evaluating sites and preparing substrates.
Moisture assessment is product-specific. Ask which test is appropriate, what the result measures, and which limit applies to the proposed primer and coating. Relative-humidity and vapor-emission results are different measurements; they should not be treated as interchangeable. The proposal should record the assessment and any treatment required for that system.
Compare the full coating build
A proposal may include primer, base coat, decorative flakes and a protective topcoat. Ask for the actual products, the included layers, and whether any moisture mitigation or additional repairs are required.
Discuss texture, cleaning, exposure, vehicle use and slip considerations for your garage. Decorative flakes alone do not establish that a floor will be slip-resistant when wet. Performance and return-to-service limits come from the specified system rather than the generic word “epoxy.”
Cost and schedule
The planning range for a 400–500-square-foot two-car garage is $1,800–$3,500, depending on concrete condition, preparation, system and decorative choices. Repairs or a different scope can change that price. The free written estimate confirms what is included.
Coating, recoat, walking and vehicle-use times can differ. Ask when stored items can return and when the vehicle can park on the surface. Product instructions and actual conditions determine these milestones; the estimate explains your floor’s return-to-use and care requirements.
Questions to ask before proceeding
- What existing coatings, contamination or damage need attention?
- Which moisture assessment and substrate preparation are specified?
- What products and layers are included, with what texture and maintenance needs?
- When can pedestrians, stored items and vehicles return?
- What coverage applies to this particular scope?
Ask us to confirm coverage for your garage-floor scope in the written estimate. Read the warranty page and garage-floor service details before comparing proposals.
For other maintenance work, see soft washing versus pressure washing and deck and fence care.