Can Concrete Remedy Deep Seal (DS) and Top Seal (TS) be used on new or old concrete?
The age of the concrete does not make a difference. Concrete Remedy Deep Seal and Top Seal will work on any cementitious material (materials containing Portland cement, e.g., concrete, mortar, stucco, shot-crete etc), regardless of how old it is. The most important requirement is that the materials be able to penetrate or soak down into the concrete. They are designed to work internally.