Patios laid on a base built for a winter here

The visible difference between a good patio and a bad one shows up in the third winter. This region runs through dozens of freeze-thaw cycles a year: water gets into the base, expands as it freezes, lifts whatever is on top of it, and lets it down somewhere slightly different. Do that forty times and a patio laid on thin or unconsolidated fill is no longer flat.

What prevents it is unglamorous. Excavation deep enough for a real base — more on the clay-heavy, slow-draining soils that are common east of the Hudson — crushed stone compacted in lifts of a few inches at a time rather than dumped and rolled once, a bedding course held to a consistent depth, and pitch. Every patio is built with a fall of about an eighth of an inch per foot away from the house. It is imperceptible underfoot and it is the whole difference between water leaving and water pooling at the foundation.

Then the material, which is the part you get to choose on taste. Bluestone reads as the Hudson Valley because it is from here. Interlocking concrete pavers cost less, come in more patterns, and are far easier to lift and reset if a utility ever has to be dug up. Flagstone is the most irregular and the most work to set well. We will price whichever you like and tell you plainly where each one is a compromise.