We see stoops and porches that have fallen every day. If you're a homeowner in Colorado, you know concrete fails frequently in our climate. With our freeze and thaw cycles over the winter months, porous concrete surfaces absorb moisture, so soils below are washed away. For this customer compaction during the original construction is most likely the culprit. Thankfully PolyLevel not only lifts and levels concrete slabs but also compacts the soils below as an added benefit!