A paver patio is a floor built outdoors on ground that moves. East Tennessee's clay soils swell when wet and shrink when dry, and its winters cycle through freeze and thaw dozens of times. The paver on top never fights that battle — the base underneath does.
Getting the base right means digging out the soft material, not just skimming the grass off; building back in compacted lifts of crushed stone; and screeding a thin, even setting bed over it. Skip the excavation and the patio rides on whatever the yard happened to be; skip the compaction and it settles wherever a wheelbarrow load was left thicker.
Edges are the other quiet failure point. Pavers are individual pieces of concrete — nothing holds a field of them together laterally except the restraint at the perimeter. Without a proper edge, the outside rows creep, the joints open, and the pattern unravels from the border inward.
The good news is that a paver surface built on a real base is one of the most repairable floors there is: a stained or damaged paver lifts out and swaps, which is not something poured slabs can offer.
Paver patios, walkways and pool surrounds — excavation, base and edges included — are part of the ten services at Garcia's Hardscape. Call (865) 314-3287 to talk about a project; estimates are free.