Roof Replacement Cost in NJ (2026): Price per Square and by House Size

NJ roof replacement price per square (2026)

A square is 100 sq ft of roof surface. Prices below are installed prices for a full tear-off replacement, including underlayment, flashing, ventilation, cleanup and disposal.

Prices are for North Jersey in 2026 and assume one layer of old shingles and a sound deck. Extra layers, deck repairs and complex roofs add cost (see below).

Roof cost by house size

House size is a shortcut, not a measurement. A two-story home has roughly half the roof of a ranch with the same floor area, and steep pitches add surface. Use these as a starting point, then get the roof measured.

What changes the price of a new roof

• Roof size and shape. More squares means more material and labor. Hips, valleys and dormers add cutting, flashing and waste.
• Pitch. Steep roofs need harnesses, roof jacks and slower work, so labor goes up. Very low slopes need a membrane instead of shingles.
• Layers to remove. Each extra layer of old shingles adds tear-off labor and disposal weight.
• Deck condition. Soft or rotted sheathing has to be replaced before the new roof goes on. We price it per sheet and only replace what we find.
• Chimneys, skylights and walls. Every place the roof meets something else needs new flashing, and chimneys may need a cricket or repointing.
• Material. Designer shingles, slate and metal cost more up front and last longer. Architectural asphalt is the value choice for most homes.
• Ventilation and ice protection. Adding ridge or intake vents, or extending ice-and-water shield beyond the eaves and valleys, adds cost but prevents the ice dams and heat damage North Jersey roofs see.
• Access and logistics. Tight lots, no driveway for a dumpster, attached homes or multi-family buildings take more planning and labor.

What a complete replacement quote should include

• Full tear-off and disposal
• Deck inspection and sheathing repair
• Ice-and-water shield at eaves and valleys
• Synthetic underlayment
• Drip edge and starter strip
• New flashing and pipe boots
• Ridge or roof ventilation
• Magnetic nail sweep and cleanup

If a quote is much cheaper than others, check which of these are missing. Our 10-year workmanship warranty covers the installation on every roof we replace, on top of the GAF manufacturer warranty.