What goes wrong with patios and paths in this climate?
San Francisco hardscape faces a few specific problems.
- Damp shade. In foggy, shaded yards, smooth surfaces grow moss and algae and become slippery. A textured paver and good drainage help.
- Poor base work. Pavers laid over soft fill or thin base material sink and ripple within a few winters.
- Water running the wrong way. A patio that slopes toward the house sends water at the foundation. A small, steady slope away from walls prevents that.
- Slopes. On a hillside, a flat patio often needs a retaining wall or terrace behind or below it. Our retaining walls and drainage page covers that work.
- Tight access. Pavers and base rock are heavy, and getting them down a narrow side passage costs time and money.
Good planning addresses each of these before a single stone is laid.

