Landscaping Bricks Near Me
- Clay Pavers: These are governed by ASTM C902 standards. Their key benefit is colorfastness; the color is baked through the entire brick and won't fade. Their compressive strength is typically very high, but their water absorption rate is critical. For climates with freeze-thaw cycles, you must demand a paver with an absorption rate below 6%.
- Concrete Pavers: Governed by ASTM C936, these offer more design flexibility. However, their color is often only in the top surface layer. Their most important metric is compressive strength, which should be a minimum of 8,000 PSI (pounds per square inch) for any pedestrian or light vehicular traffic. I’ve seen local suppliers push 5,000 PSI pavers because they are cheaper, and these are the ones that crack under the weight of a heavy grill or patio furniture.
- Subgrade Excavation & Compaction: After excavating to the required depth (typically 7 inches for a walkway, 10+ for a driveway), the native soil itself must be compacted. I use a plate compactor to achieve a 95% Standard Proctor Density. This single step prevents the entire base from sinking over time.
- Geotextile Separation Fabric: This is my "secret weapon" and the most-skipped step by DIYers. A layer of non-woven geotextile fabric is laid on top of the compacted subgrade. It acts as a separator, preventing your expensive aggregate base from mixing with the soil below, which is the primary cause of sinking and voids.
- Aggregate Base Course: I use a 4- to 6-inch layer of ¾-inch angular crushed stone. Crucially, this must be compacted in 2-inch lifts (layers). Compacting the entire 4 inches at once results in a well-compacted top but a loose, unstable bottom.
- Bedding Sand Course: The final layer before the bricks is exactly 1 inch of coarse screeding sand. Any more than this, and the bricks will shift. Any less, and you won't be able to level them properly.