Roof Warranties in New Jersey: Manufacturer vs. Workmanship
A new roof usually comes with a warranty, and often two. But many homeowners don't learn what their roof warranty covers until they need it. By then, a missed sign-up deadline or an attic airflow problem can leave them with no coverage at all. A few questions up front can prevent that.
This guide explains the two main kinds of roof warranties and what can cancel them. It covers what New Jersey law says about your warranty papers. It also explains what happens when you sell your home, and what to ask before you sign. Keep it handy when you compare quotes.
Two Kinds of Roof Warranty, Two Different Promises
The Manufacturer Warranty
This comes from the company that made the shingles. It covers flaws in the product itself. Coverage often shrinks over time, and the cost of labor may not be included. Many makers also sell better plans, but some are only offered through roofers they've approved.
The Workmanship Warranty
This comes from the roofer who put the roof on. It covers mistakes in the work, like a bad flashing joint or the wrong nail pattern. Terms vary a lot from one roofer to the next. Get the length and what it covers in writing.
What New Jersey Law Says About Warranty Paperwork
Under the state's home improvement rules, your roofer must give you copies of the maker's warranties. You should get them when you sign or when the product goes on. If you didn't get them, ask. Our guide to hiring a roofer in NJ covers what else your contract must include. Ocean County's consumer affairs office also advises getting every warranty and guarantee in writing, with the brand or grade of materials named in the contract.
What Can Void a Shingle Warranty
Not Following the Installation Instructions
Shingle makers print step-by-step install rules. They can deny a claim if the roof wasn't put on that way. That includes the nail pattern and extra steps for windy areas, which matters at the Jersey Shore.
Poor Attic Ventilation
Most shingle makers require good attic airflow. A trade report from the Journal of Light Construction notes that, with few exceptions, putting shingles on an unvented roof deck will void the warranty. A town's approval doesn't override the maker's rules.
Later Changes to the Roof
Cutting new holes for vents, skylights, or solar mounts can affect coverage near those spots. If you add solar later, make sure the mounts are sealed well. Our solar panel detach and reset page explains how panels come off and go back on during roof work.
Damage From Cleaning or Neglect
Pressure washing can strip the gritty top layer off shingles. Damage like that, or from clogged gutters and standing water, may not be covered. Regular roof maintenance helps you catch small problems before they turn into a claim.
Registration and Selling Your Home
Some Warranties Must Be Registered
Better warranty plans often must be signed up for within a set time after the roof goes on. Ask whether your roofer does this or whether it's your job. Keep the proof.
Transfers Have Rules
Many maker warranties can pass to a new owner only once. One major shingle maker, for example, needs the new owner to tell it in writing within one year of the sale. If you're selling, our pre-sale roof inspection page explains how to get your roof records in order.
Questions to Ask Before You Sign
Which manufacturer warranty comes with these materials, and for how long?
Who registers it, and by when?
How long is your workmanship warranty, and what does it cover?
Can either warranty transfer if I sell the house?
Who do I call if I need to make a claim?
Will the contract name the brand and grade of the materials?
Frequently Asked Questions
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A manufacturer warranty covers defects in the roofing materials. A workmanship warranty comes from the roofer and covers mistakes in the installation. Most new roofs come with some version of both.
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Yes. New Jersey's home improvement rules require contractors to give homeowners copies of all manufacturer warranties, either when the contract is signed or when the product is installed.
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Yes. Most shingle makers require proper attic ventilation, and installing shingles on an unvented roof deck will void most warranties.
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Often, but with limits. Many manufacturer warranties transfer only once, and the new owner may need to notify the maker in writing within a set time.
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Yes. G.R.M Roofing offers free roof inspections and written estimates across Ocean County. Call (609) 389-2485 to book.
The Bottom Line
A roof warranty is only as good as the paperwork and the installation behind it. Know which warranty covers materials and which covers labor, make sure it's registered, and keep copies with your home records. In New Jersey, your contractor must give you the manufacturer warranties, so ask if you didn't get them. Before you sign, get the workmanship terms in writing too. Call G.R.M Roofing at (609) 389-2485 for a free inspection and a written estimate.
