A roof warranty comes in two very different parts, and knowing the difference protects your home. The manufacturer warranty covers the shingles and materials themselves, while the workmanship warranty covers the labor that put them on your house. You need both to be truly protected, and here in the Norwin area we see plenty of homeowners who only found out the hard way that they had one and not the other.
At Bella Construction & Development Inc., we have been installing roofs across Irwin, Westmoreland County, and the greater Pittsburgh area since 1995. Over those years we have read a lot of fine print, filed a lot of claims, and helped a lot of neighbors understand what their coverage actually says. Here is the honest version.
The Two Warranties on Every Roof
Think of your new roof as a partnership between two companies. The shingle manufacturer makes the product. The contractor installs it. Each one stands behind a different piece of the job, and that is why there are two warranties.
Manufacturer (Material) Warranty
The manufacturer warranty protects you against defects in the shingles and roofing components. If the product itself fails early because something was wrong with how it was made, the manufacturer covers it. Most quality asphalt shingles today carry what is marketed as a “lifetime” limited warranty, but that word deserves a closer look.
A basic material warranty is often prorated. That means the full replacement value only applies for the first several years, usually around ten. After that, the coverage drops steadily each year based on the age of the roof. So a defect that shows up in year twenty might only return a small fraction of the material cost, and it almost never covers the labor to tear off and reinstall.
Workmanship (Labor) Warranty
The workmanship warranty comes from the contractor, not the manufacturer. It covers mistakes in the installation itself, things like improper nailing, poor flashing, or a leak around a valley or chimney. This matters enormously, because the truth is that most roof failures are not caused by bad shingles. They are caused by bad installation.
A material warranty does you no good if the leak came from a flashing detail that was rushed. That is workmanship, and only a workmanship warranty covers it. When you compare contractors, ask how long their labor warranty runs and get it in writing. A company that has been around since 1995 can actually stand behind a long labor promise, while a business that may not exist next year cannot.
What Owens Corning Platinum Preferred Adds
This is where the two warranties can come together into something much stronger. Bella Construction is an Owens Corning Platinum Preferred contractor, which is the top tier of their contractor network. Fewer than a small percentage of roofing contractors nationwide earn that status, and it changes what the manufacturer is willing to promise on your home.
Because we hold Platinum Preferred status, we can offer upgraded system warranties that go well beyond the standard shingle coverage. When you install a full Owens Corning roofing system with a qualified contractor, the manufacturer can cover both the materials and the workmanship for an extended period, and the material coverage can be non-prorated for a set number of years rather than dropping in value right away. In plain terms, that means if there is a covered problem, the fix is more likely to include the labor, not just a partial refund on shingles.
You can read more about that top tier certification and what it means for your project on our page explaining the Owens Corning Platinum Preferred designation. The short version is that the strongest warranties in roofing are only available through contractors who have earned the manufacturer’s trust, and that trust is earned over years of proper installations and satisfied customers.
Transferability: Why It Matters When You Sell
Here is a detail that often gets overlooked until it is time to sell the house. Many roof warranties are transferable, meaning the coverage can pass to the next owner. A transferable warranty is a real selling point, because a buyer knows the roof is still protected.
The catch is in the rules. Some warranties allow only one transfer, and only within a certain window, often the first ten years, and sometimes there is a small transfer fee and a form that must be filed on time. If you miss the window or skip the paperwork, the coverage can drop to a lower level or disappear for the new owner. If you are buying or selling a home in Irwin or anywhere across Westmoreland County, ask for the original warranty documents and confirm the roof was installed by a certified contractor, because that is what unlocks the better transferable terms.
Reading the Fine Print Without Losing Your Mind
Warranties are long documents, but a few things trip people up more than others. Watch for these.
- Proration schedules that reduce the payout as the roof ages.
- Exclusions for storm damage, which is usually a homeowners insurance matter, not a warranty matter.
- Ventilation requirements, since poor attic ventilation can actually void coverage.
- Registration deadlines, because some manufacturers require you to register the roof within a set number of days.
- The difference between “lifetime” and the number of years of full, non-prorated value.
Proper ventilation is one of the most common reasons a claim gets denied, which is why we take it seriously on every job. If you want to understand how airflow protects both your energy bill and your warranty, our team can walk you through it during a visit. You can also see the full scope of what we install and how we back it on our main roofing services page.
For an independent take on how these documents work, the Federal Trade Commission publishes clear consumer guidance on warranties and your rights. It is a helpful, neutral resource when you want to double check what a company tells you.
The Bottom Line for Norwin Area Homeowners
A roof is one of the largest investments you will make in your home, and the warranty is a big part of what you are actually buying. Do not settle for a strong material warranty paired with a weak or nonexistent labor warranty. Look for a contractor who offers both, who is certified to unlock the manufacturer’s best coverage, and who has a long local track record so the promise still means something in fifteen years.
That combination of manufacturer backing and contractor accountability is exactly what we have built our reputation on since 1995, and it is reflected in our BBB A+ rating and our 4.7 star average from more than 900 Google reviews.
Frequently Asked Questions
What is the difference between a manufacturer and a workmanship warranty?
The manufacturer warranty covers defects in the shingles and materials themselves, while the workmanship warranty covers mistakes made during installation. Most roof leaks come from installation errors, so the workmanship warranty is often the one that actually protects you. You want both on your home.
Does a lifetime roof warranty really last a lifetime?
Not in the way most people expect. A “lifetime” limited warranty usually offers full value for the first ten years or so, then prorates downward based on the age of the roof. The best non-prorated coverage comes through certified contractors who can offer upgraded system warranties.
Can I transfer my roof warranty to a new owner?
Often yes, but the rules are strict. Many warranties allow one transfer within the first ten years, sometimes with a small fee and a required form. Keep your original documents and confirm the transfer deadline before selling your home.
What can void my roof warranty?
The most common culprits are poor attic ventilation, unapproved repairs or layovers by another contractor, and failing to register the roof on time. Storm damage is usually handled through insurance rather than the warranty. Following the manufacturer’s requirements keeps your coverage intact.
Let Us Take a Look
If you are not sure what your current roof is covered for, or you want a new roof backed by the strongest warranties in the business, we are happy to help. Call Bella Construction & Development Inc. at 724.515.5163 for a free, no pressure roof inspection. We are right here at 10561 Center Hwy, Irwin, PA 15642, and we would be glad to explain your options in plain language.