Can I apply Rust Bullet Concrete coatings to new concrete?

Yes. Rust Bullet Concrete coatings may be applied to new, unsealed concrete once the concrete has fully cured and is completely dry throughout. If a new slab is being poured with the intent to coat it with Rust Bullet, we recommend specifying a rough or broom finish. Do not have the concrete power troweled, and do not apply a concrete sealer.

Keep in mind that curing and drying are not the same thing. Although concrete is commonly considered cured after approximately 28 days, it may still contain significant moisture below the surface. As a general guideline, new concrete can require approximately 30 days of drying time per inch of slab thickness, and potentially longer depending on temperature, humidity, ventilation, slab construction, and other conditions. Do not rely on elapsed time alone. Before applying Rust Bullet, always perform a moisture test to confirm the concrete is dry.

To perform a simple moisture test, tape a piece of clear plastic securely to the concrete, sealing all edges. A gallon-size resealable bag with one side cut open works well. Leave it in place for 24 hours, then inspect the area for condensation beneath the plastic or darkening of the concrete. Either condition indicates that moisture is still present and the concrete is not ready to coat.

Perform this test in several locations, including near the perimeter and toward the center of the slab, and follow all Rust Bullet surface preparation and application guidelines before coating.