Salem's clay is the reason patios here sink, rock and puddle. It holds water all winter and shrinks in August, and a paver patio on a thin base moves with it. Every patio we build in Salem starts with digging deeper than you'd expect, fabric over the clay, and crushed rock compacted in layers.
In West Salem we built a herringbone paver garden walk where a muddy shortcut used to be. The base there went in at eight inches because the path takes wheelbarrows and a ride-on mower, and a gravel trench along the low edge carries winter runoff away from the house.
On the South Salem hills, most patios need a step or a low seat wall to deal with the grade. Segmental block walls under four feet are the usual answer; anything taller needs engineering, and we'll say so when we quote.
In the older neighborhoods near downtown, the challenge is tree roots and tight access. We hand-dig around roots we want to keep, and price for wheelbarrow access when a machine can't get through the side gate.
Patios in Salem are best built July to September, when the clay is dry enough to compact. We book fall projects early so they're done before the October rains.

