Why the base matters
The part you see is the easy part.
Anyone can lay pavers that look good on day one. What decides whether a patio is still flat in ten years is everything underneath it: how deep the excavation went, what the base is made of, and how well it was compacted.
That matters more here than in most places. Our clay soils hold water, and Front Range winters freeze and thaw the ground over and over. A base that traps water moves with it. That's where sunken corners, wide joints and rocking pavers come from.
That's why every patio we build sits on an open-graded base. A standard base is packed with fine material that holds moisture. An open-graded base is 3/4-inch clean crushed stone with open space between the pieces, so water passes through and drains away instead of freezing under your patio. On top of it we bed the pavers in 3/8-inch crushed stone, not sand, and finish the joints with polymeric sand.
We build to the manufacturer's installation standards, and we'd rather explain what's going into the ground than have you find out later what was left out.