Pitting and flaking are the results of water damaging the surface of your concrete over time. After heavy rain, the surface of the concrete will absorb water (like a sponge). When this water then evaporates or freezes, it creates or widens existing surface damage on the face of the concrete. Many people attribute this damage to salt laid down in the winter, but that is not totally accurate. Laying down salt can melt existing ice and snow into water, which then refreezes on the surface of the concrete - widening imperfections. This damage worsens every year as the seasons and weather change until it is noticeable to the naked eye. This can decrease your property value and create pathways in the concrete’s surface for further damage.