Question 1

Do I need a permit for a new driveway apron or sidewalk in Cedar Grove?

Accepted Answer

Yes. Cedar Grove's Township Engineer requires a permit before any work on a driveway apron, sidewalk, or curb opening. The application must identify the scope of work, location, start and completion dates, property owner, and contractor. The Township Engineer also requires at least 24 hours' notice before any concrete pour on a sidewalk or apron so an inspection can be scheduled. No driveway curb opening in a residential area may exceed 20 feet in width. Roca manages the permit application and coordinates the required inspection as part of the job.

Question 2

Why do retaining walls fail so often on Cedar Grove's hillside lots?

Accepted Answer

The most common cause is inadequate drainage. Cedar Grove's elevated sections — Park Ridge Estates, Hilltop, and the slopes above Fairview Avenue — sit on shallow rock and shale that limits downward water movement, so groundwater and surface runoff tend to build up behind retaining walls. Without gravel backfill and a perforated drain pipe at the footing, hydrostatic pressure increases every wet season and pushes walls outward. Frost compounds the problem in winter, expanding saturated soil against the wall face. A repair that doesn't address drainage is temporary. We rebuild with proper backfill, drain pipe, and weep holes so the wall has a path to shed water.

Question 3

My driveway has been cracking and heaving for years. Does it need full replacement or just patching?

Accepted Answer

It depends on the base condition. Surface cracks and isolated heave sections on an otherwise sound driveway can often be addressed with patching and crack sealing, followed by sealcoating to slow further water infiltration. But if the base has failed — common on driveways from the 1960s and 1970s in Cedar Grove that have never been fully replaced — patching is a short-term fix. We excavate a test area on site to assess base depth and condition before recommending full replacement or an overlay. You get an honest answer, not an automatic upsell.

Question 4

What type of concrete do you use for exterior work in Cedar Grove's climate?

Accepted Answer

For any exterior flatwork — driveways, walkways, patios, or stoops — we pour 4,000 to 4,500 PSI air-entrained concrete with approximately 5 to 7 percent air content. The air entrainment creates microscopic voids that absorb the pressure from freeze-thaw expansion, which is what prevents the surface scaling that shows up on older slabs every spring. We also slope all flatwork away from the structure at roughly a quarter inch per foot and cut control joints at the correct depth and spacing so the slab manages stress predictably over time.