A roof warranty sounds like peace of mind. Most homeowners never read theirs until something goes wrong. By then it is too late to change the terms. A little understanding up front saves a lot of frustration later.
Two warranties, not one
Every roof job really comes with two kinds of coverage. They protect against different things, and the difference is worth knowing.
The manufacturer warranty
This covers the shingles themselves. If the material is defective, the manufacturer stands behind it. Companies like GAF back their shingles for decades. What it does not cover is a bad install. If the shingles were laid wrong, that is not a material defect.
The workmanship warranty
This covers the install. If the crew made a mistake, the contractor makes it right. Here is the part most people miss. The large majority of roof failures come from installation, not defective shingles. That makes the workmanship warranty the one that protects you most.
A strong manufacturer warranty on a poor install is not worth much. The material may be fine while the roof still leaks. The crew that puts it on matters as much as the box it came in. We cover this in more depth in our guide to roof warranties.
What voids your coverage
Warranties come with conditions. Break them and the coverage can disappear. The common ones:
- Poor attic ventilation, which many warranties require
- A second roof layered over the old one, which can void manufacturer coverage
- Unpermitted or unlicensed work
- Neglecting basic maintenance and inspections
- Repairs done by an uncertified contractor
That ventilation requirement catches a lot of people. If your attic runs hot and the airflow is poor, the manufacturer may point to it when a claim comes in. It is one more reason ridge vents and attic airflow is not optional.
What to ask before the job
Before any crew starts, get the terms in writing. Ask two simple questions. What does the manufacturer warranty cover, and what does the workmanship warranty cover? Get both answers on paper. A contractor who stands behind the work will not hesitate.
In New Jersey, it also pays to confirm the work meets local code. The NJ Division of Codes and Standards sets the standards, and a proper permit keeps your coverage intact.
Certified work you can hold us to
We are a GAF-certified contractor and we back our installs. We put the terms in front of you before the first shingle goes on. That is how it has worked here since 1973.
Questions about your roof’s warranty? Call (908) 774-9229 and we will walk you through it.
