Hi Mike. You can apply a second coat. You need to wait a minimum of 6 hours and no more than 48.

Hi Jason. The best product to apply would be a concrete densifier. Traditional concrete sealers work by repelling moisture and protecting the concrete from the surface. However, they don’t do anything to reduce or prevent moisture vapor transmission from moisture in the soil beneath the slab. This MVT, if it exists in your garage, is what causes mats, boxes, and any other flat object that sits on concrete for a while to collect moisture underneath.

A densifier technically is not a sealer. It works by reacting with minerals and free lime in the concrete to produce additional Calcium Silicate Hydrate. It’s the same substance in concrete that makes it hard as it cures. This additional CSH helps to fill the uppermost pores and capillaries in the concrete. As a result, the concrete becomes harder and denser. A byproduct of densifiers is that they also help to block or reduce moisture vapor transmission from below the surface since it fills the pores and capillaries. A great product we can recommend is PS103 by Concrete Sealers USA. You can find it here.

Hi Judy. Removing rust can be tough. You need to use products that do not contain acids. We recommend trying Evapo-Rust by CRC. It’s water-based and non-corrosive.