That dip by the back door didn't happen overnight. Paver patios across Northern Illinois sink for the same three reasons — and the good news is that fixing one almost never means buying a new patio.
Our region sits on heavy clay. It drains slowly, holds moisture against the patio base, and turns to soup in a wet spring. A base built on poorly drained clay is a countdown clock.
Water in the base freezes, expands, and lifts pavers; the thaw drops them back — but never quite evenly. Twenty-plus cycles a winter, every winter, and low spots become trenches.
The invisible part of a paver patio is the part that matters: excavation depth, gravel base, and compaction. Builders in a hurry skimp exactly there, and winter finds it within a few seasons.
We lift the sunken section, rebuild and re-compact the base where it failed, re-lay the same pavers, and finish with fresh polymeric sand to lock joints and shed water. Because they're your original pavers, the match is perfect — no new-vs-faded checkerboard. The full service, including small concrete repairs and new walkways, is on our pavers & concrete page.
Fall is the sweet spot: the ground is workable, and fixing drainage and low spots before winter means the freeze has less water to weaponize. It also pairs naturally with gutter cleaning — overflowing gutters dumping at a patio corner is a classic cause of that one sunken edge. If water is reaching your foundation too, our winterization visit covers the whole exterior checklist at once.
Send a photo of the dip and you'll get a free written quote — one clear number for the fix, and an honest flag if what you really have is a drainage problem. Serving Sycamore, St. Charles, Huntley, and all of Northern Illinois.
