Concrete patio — Seattle, WA

For paving slabs in Seattle, a high-strength concrete mix, typically around 4000 psi, is recommended for durability. The pros consider the aggregate size and the water-to-cement ratio, aiming for a balance that ensures strength without compromising workability. Air-entraining admixtures are often included to enhance resistance to freeze-thaw cycles and de-icing salts, crucial for longevity in our climate. Proper curing techniques are also emphasized to achieve maximum strength.