How Much Does Re-Roofing Cost in NJ?

Material choice drives the per-square-foot rate above the labor and tear-off baseline: architectural asphalt runs $6.50 to $11.00 per square foot, metal $9.00 to $16.00 per square foot, and slate $10 to $30 per square foot. Josten Roofing NJ pricing sets the architectural asphalt and metal rates, while NJ roofing guides set the slate range, and each rate reflects the material before the removal and labor lines are added.

Tear-off of the old covering adds a removal line on top of the material rate, at $1 to $3 per square foot for asphalt shingles and $2 to $5 per square foot for heavier slate or tile, per HomeGuide national cost data. A recover skips this removal labor and disposal, which is why an overlay runs lower on the line items even though it carries its own trade-offs.

Labor accounts for roughly 60 to 70 percent of an asphalt-install total, per HomeGuide and Integrity Home Exteriors, so the crew time to strip, prepare the deck, and lay the new cover represents the majority of the figure rather than the shingles themselves. Material lifespan also shapes cost per year of service: 3-tab asphalt lasts 20 years, architectural asphalt 30 years, metal 40 to 80 years, and slate 60 to 150 years, per the InterNACHI life-expectancy chart and the National Slate Association.

New Jersey ranges sit 10 to 40 percent above national figures, per HomeGuide and Integrity Home Exteriors, because of higher regional labor rates and stricter New Jersey code requirements rather than any roofing license. New Jersey issues no roofing license; contractors register as New Jersey Home Improvement Contractors under N.J.S.A. 56:8-136, with the 13VH registration number on the contract and any advertisement per N.J.S.A. 56:8-144.

Code-required line items lift the New Jersey figure in ways a national estimate omits: an ice barrier runs from the eave to a point at least 24 inches inside the exterior wall line, per IRC R905.1.2, and Newark's winter climate, which crosses 32 degrees Fahrenheit repeatedly with an average January low near 25.5 degrees Fahrenheit, per NOAA 1991-2020 normals at Newark Liberty, drives the freeze-thaw stress that makes that ice-and-water shield a real cost, not an upsell.

A complete re-roof of the covering on a detached one- or two-family home is ordinary maintenance under N.J.A.C. 5:23-2.7 and requires no construction permit, which keeps a permit fee off most residential estimates. A commercial re-roof or a structural change to rafters or trusses does require a permit, so the building type, not the dollar amount, determines whether a permit line appears.

An itemized written estimate lists tear-off, deck repair, the ice barrier, underlayment, the cover, disposal, and the permit when one is triggered, so disposal and the code-required ice-and-water shield are not silently excluded. New Jersey requires a written contract for any job over $500 under N.J.A.C. 13:45A-16.2, with scope, total price, and start and completion dates set in writing before work begins.

A documented deck assessment belongs in the estimate because a full tear-off exposes the roof deck for inspection, while a recover hides deck rot and water damage a tear-off would catch, per ARMA and InterNACHI. A spongy or sagging deck signals moisture-rotted sheathing that the tear-off line then captures, so the assessment sets whether deck-repair cost enters the estimate at all.

Two separate warranties belong in the paperwork: the manufacturer material warranty covers factory defects and stays intact when the cover is installed to manufacturer specification, per Owens Corning warranty guidance, and the contractor's written workmanship warranty covers the labor. Confirming both in writing, alongside at least $500,000 per-occurrence commercial general liability coverage under N.J.S.A. 56:8-142, separates a complete estimate from a headline price.