Two Newark houses on the same block can get very different prices for a new roof, and both prices can be fair. A roof replacement is made of many smaller jobs, and each one changes with the building. This guide walks through what drives the price so you can read a contract with confidence and compare two of them. It doesn't give prices. Those are set by the contractor after looking at the roof.
The Main Factors
| Factor | Why it changes the price |
|---|---|
| Size | More area, more material and labor |
| Pitch | Steep roofs need more safety setup and slower work |
| Layers to remove | Each layer adds tear-off labor and disposal weight |
| Deck repair | Soft or rotted boards and sheathing are replaced as found |
| Material | Shingle grades, flat-roof membranes and slate differ widely |
| Flashing and details | Chimneys, dormers, skylights, valleys, parapets and walls take time |
| Insulation and taper (flat roofs) | Adding or replacing insulation, or correcting slope |
| Access | Tight lots, attached buildings and no driveway for a dumpster |
| Permits and inspections | Required on attached homes and three-family and larger buildings |
| Gutters and edge metal | Replaced with the roof, or kept |
| Ventilation | Adding or correcting attic vents and ridge vents |
| Season and schedule | Weather delays and busy periods after storms |
Pitched Roofs vs. Flat Roofs
On a pitched shingle roof, the big variables are layers, deck condition, steepness and how many chimneys, dormers and valleys there are. On a flat roof, they're the membrane chosen, whether the old roof and insulation come off or can stay, how many drains and scuppers there are, and the parapet flashing. Many Newark two- and three-family houses have both: a flat main roof and a shingled mansard on the front, priced as two parts.
The Hidden Line: The Deck
Nobody knows exactly how much deck needs replacing until the old roof is off. Contracts usually handle this with a unit price, a set amount per sheet of plywood or per foot of board, applied to whatever turns up. When comparing contracts, compare those unit prices as well as the total. A low total with a high unit price for deck repair can end up costing more.
What a Good Contract Shows
- the roofing material by name and type, plus underlayment and ice barrier
- tear-off: how many layers, and disposal included
- deck repair: unit pricing for anything replaced
- flashing: new at walls, chimneys and penetrations, or reused
- gutters, edge metal and ventilation: included or not
- permits: who pulls them and whether the fee is included
- cleanup, including magnetic sweeping for nails
- the payment schedule
- the contractor's New Jersey registration number
Comparing Two Contracts
Put them side by side and go line by line. Differences in price usually come from differences in scope: one includes new flashing and the other reuses old; one removes two layers and the other assumes one; one includes ice barrier at the eaves and the other doesn't. Ask each contractor to explain anything the other included and they didn't.
Things That Rarely Belong in a Price
- payment in full before work starts
- a price that changes if you sign today
- a promise that your insurance will cover it, before the insurer has looked
Paying for a New Roof
Payment schedules are usually a deposit, a payment at a stage of the work and the balance on completion. Avoid paying in full up front. If insurance is involved, payments may come in parts, and lenders are sometimes named on checks. If you're financing the work, read the terms carefully and compare them with what the contractor offers. Ask for receipts for every payment, and keep them with the contract.
Timing and Price
Roofing demand rises after big storms and in the busy building months, and contractors' schedules fill up. Planning a replacement before the roof is actively leaking gives you time to compare contractors and pick a good weather window. Waiting until a leak forces the decision usually means less choice, plus interior damage to repair on top of the roof.
Questions
Can a roofer price the job from a phone call?
Because size, layers, deck condition and details can only be judged by looking at the roof. A phone call can describe the job; a visit prices it.
Is the cheapest contract the best value?
Only if it includes the same work. Compare the scope first, then the price.
Does a permit add much to the cost?
There's a fee and sometimes inspection time. On buildings that need one, it's a normal part of the job.
Around Newark
The same factors apply in Vailsburg, Weequahic, Bloomfield and Belleville. More on the work: roof replacement.
Repair or Replace? How Roofers Make the Call
The factors that tip a roof one way or the other.
Roof Claims in New Jersey After Wind and Storms
How a storm roof claim usually works, step by step.