A clean driveway isn't necessarily ready for sealer. Washing may reveal old coatings, worn areas, or damage that needs attention before anything new is applied.
Assess the Surface After Buildup Is Removed
Dirt can conceal worn areas, old coatings, and stains. Once the concrete is clean, the contractor may have a clearer view of what preparation is still required. Ask how unexpected coating issues or deterioration will be handled before application proceeds.
Don’t assume stronger washing will remove every mark safely. Oil, rust, and old finish may need separate consideration, and some discolouration may remain. Ask which stains are likely to remain visible after sealing.
Keep Preparation and Curing Separate
The surface may need time after cleaning before a sealer can be applied. Ask which product is compatible with the surface and what drying and weather conditions it requires. Application is then followed by its own traffic restrictions.
Plan parking and household access for the full process. Avoid scheduling a delivery between cleaning and sealing without checking whether it would interfere with the prepared surface.