Driveway Paving in West Seattle

Yes. A driveway is typically the largest impermeable surface on a residential property, which means rainfall previously soaking in across that area now leaves as concentrated runoff. On level ground that is a drainage detail; on slide-sensitive bluff ground it is a stability question, because saturated soil is the mechanism that moves a slope. A large share of the bluff carries steep slope or landslide-prone designations, so we check the parcel against the city map before quoting and design the runoff destination as part of the project.

Something textured, and on the bluff-side gradients this matters more than appearance. Smooth-finish concrete and large-format smooth pavers on a real incline become genuinely slippery in a wet Seattle winter — underfoot most obviously, and under tyres on a cold morning. Textured pavers, a broom or exposed-aggregate concrete finish, or asphalt all perform considerably better on a slope. It is worth seeing a sample wet rather than choosing from a dry board, because the difference is significant and invisible in a photograph.

Not the paving, which is unaffected by salt-laden wind whether it is concrete, stone or asphalt. What it affects is the metalwork — channel drain grates, fixings, any edge restraint hardware and gate fittings will corrode noticeably faster in an exposed Alki or Fauntleroy position than the same components a mile inland. Since a drainage grate is frequently the one component doing the most important job on a sloped drive, specifying better-grade material there is a small cost with a long payoff.

Usually, and it is one of the more worthwhile improvements on the older Junction and Admiral streets where drives were built for narrower cars. The practical questions are the boundary, any tree at the edge, and whether widening changes where runoff goes. A wider drive is a larger impermeable surface, so the drainage that worked before may not afterwards. On the plateau that is a straightforward calculation; on a bluff-adjacent lot it needs more thought, which is the recurring theme on this side of the peninsula.