Patios

What actually goes into a paver patio build

A paver patio is finished in a week or two and lasts thirty years or three, depending almost entirely on layers that are buried before anyone sees a paver. Here is the sequence and what to watch at each stage.

The layers, bottom to top

Compacted sub-grade. The native soil, excavated to depth and compacted. If this is soft or uneven, everything above it inherits the problem.

Geotextile fabric. A separation layer between soil and stone. It stops the two migrating into each other, which is what turns a clean stone base into a mixed, unstable one over time. On Long Island soils that hold water, this is not optional.

Compacted stone base, 6 inches or more. The structural layer. It carries the load and absorbs the ground movement that comes with deep winter frost. Compacted in lifts with a plate compactor, not dumped and levelled.

Screeded bedding sand. A thin, uniform setting bed, screeded to a consistent depth. Thick or uneven bedding sand is a common shortcut and it shows up as uneven pavers within a year.

Pavers. Laid to pattern, cut at edges and around features.

Polymeric joint sand. Swept into the joints and activated with water so the polymer binds. This is what locks the field together and keeps weeds, ants and washout out.

Edge restraint. Without it the outer pavers migrate outward under load and the pattern opens up from the perimeter in.

The sequence on site

Measure and design. Layout confirmed on the ground, drainage assessed, paver and border selection made. Where water currently goes matters more than where the patio looks best.

Demolition and excavation. Any existing slab, deck or patio removed and hauled. Sub-grade cut to the depth the build requires, which is deeper than most homeowners expect once base, bedding and paver thickness are added up.

Base and compaction. Fabric down, stone in, compacted in lifts. This is the stage worth looking at, because after the next one it is gone forever.

Bedding and laying. Sand screeded, pavers set, cuts made at borders and around any fire pit, steps or pool coping.

Joints and compaction. Polymeric sand swept in, surface compacted, sand activated with water and left to cure.

Drainage decides the lifespan

Pitch runs away from the house. That sounds obvious and it is the single most common defect on patios built badly.

Where a patio sits lower than the surrounding grade, or where a downspout discharges nearby, water collects under it. On Long Island that water freezes, expands, and lifts the field unevenly. Channel drains, regrading, or redirecting downspouts are all cheaper than rebuilding a patio.

What a finished job should look like

A flat, consistent surface with no rocking pavers. Tight, full joints with no gaps where sand has not reached. Clean cuts at borders rather than slivers. Edge restraint fully installed and buried. Visible pitch away from the house. And a written workmanship warranty that names base preparation and drainage, not just the surface.

After install

Pavers need little. Rinsing and light sweeping covers most seasons.

Every three to five years, a wash, re-sanding any joints that have lost material, and resealing if the patio was sealed originally. If you do want a penetrating sealer, it goes on 60 to 90 days after installation, not immediately.

FAQ

How deep should the base under a paver patio be?

6 inches or more of compacted stone over geotextile fabric is the standard for a Long Island patio. Some sites need more depending on soil and drainage, which is determined on site.

What is polymeric sand and why does it matter?

It is joint sand with a polymer binder that hardens when swept in and activated with water. It keeps joints locked, resists weeds and ants, and stops sand washing out in heavy rain. Plain sand does none of that.

Can pavers be installed over an existing concrete slab?

Usually not. The slab normally comes out so the base can be built properly and drainage corrected. Overlay is only viable where the slab is genuinely sound and water can still be moved away correctly.

How long does a paver patio take?

Most residential patios run 5 to 10 working days from demolition to final polymeric sand. Multi-level builds with seat walls and steps take 2 to 3 weeks.

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