What is a paver base?
Paver base is a compacted layer of processed stone aggregate installed beneath pavers, patios, or walkways to provide drainage and stability and prevent frost heave.
Compacted crushed stone laid underneath pavers, patios, and walkways serves as the foundation that keeps those surfaces level and stable. This processed aggregate material is typically installed to a depth of 4 to 6 inches in Connecticut, where freeze-thaw cycles are common during winter months. The stone is compacted in layers using a mechanical tamper or plate compactor to create a dense, well-draining base.
Without a proper paver base, moisture accumulates beneath the surface. When water freezes in Connecticut's winter, it expands and pushes upward, causing the pavers or concrete to heave or shift unevenly. This creates trip hazards, breaks mortar joints between pavers, and accelerates deterioration. A well-built base allows water to drain away from underneath the installation and provides a stable platform that resists the heaving caused by soil expansion during freeze cycles.
Different stone sizes are used depending on the project. Crushed limestone, granite, or recycled asphalt millings are common choices in Connecticut landscapes. The base must be raked level and compacted firmly before pavers or the finished surface is installed on top. Skipping or inadequately compacting the paver base is one of the most common reasons patios and walkways fail within a few years. Contractors in the hardscaping and masonry field know that investing in proper base preparation prevents expensive repairs and keeps outdoor surfaces usable for decades.