What Does ICPI Certified Mean?

ICPI stands for the Interlocking Concrete Pavement Institute — the North American trade association and technical authority for the concrete paving industry.

What ICPI Certification Covers

ICPI certification training covers:

• Subgrade preparation: soil assessment, excavation depth, compaction requirements
• Base preparation: aggregate selection, lift thickness, compaction methodology
• Edge restraint systems: perimeter containment to prevent lateral paver movement
• Installation technique: leveling course, paver placement, joint spacing, pattern installation
• Drainage engineering: slope requirements, outlet design, drainage integration
• Quality standards: dimensional tolerances, joint sand selection, sealing

Why ICPI Certification Matters

The difference between hardscape that lasts 20 years and hardscape that heaves and sinks in 5 years is almost entirely in base preparation. ICPI-certified installers understand that difference and build it correctly.

When a contractor claims ICPI certification, they should be able to provide the certification number and documentation. Don't take it on faith — ask.

JHL's ICPI Certification

JHL Landscape Design's installation team is ICPI Certified. Our base preparation standards exceed the minimum ICPI specification — we excavate deeper and use thicker compacted aggregate bases than code minimum in Chester County, because Chester County's clay soils and freeze-thaw cycles demand it.

Learn more about our hardscape standards | See our hardscape services

---

JHL Landscape Design | PA HIC #PA035784 | ICPI Certified | Licensed & Insured West Chester: 701 S Franklin St, Suite 101, West Chester, PA 19382 Newtown Square: 12 Smedley Ln, Suite 101, Newtown Square, PA 19073 HBA Member | BBB A+ Rating