Quick Answer
A new roof is a big investment. Most homeowners know they should ask about the shingle warranty, but the warranty that often matters most after the job is done is the wor
A new roof is a big investment. Most homeowners know they should ask about the shingle warranty, but the warranty that often matters most after the job is done is the workmanship warranty.
Here is the simple version: a manufacturer warranty usually deals with the roofing products. A workmanship warranty deals with how the roof was installed. If shingles, flashing, ventilation, underlayment, or details were installed incorrectly, that is usually a workmanship issue, not a shingle defect.
That distinction matters. A roof can use great products and still leak if the installation is sloppy. In Utah, where roofs deal with snow, ice dams, heat, wind, and big temperature swings, installation details are not something you want to gamble with.
TLDR: What Is a Roof Workmanship Warranty?
A workmanship warranty is the roofing contractor’s promise to stand behind the installation of your roof. It helps protect you if a leak or roof problem is caused by the way the roof was installed.
For Utah homeowners, a good workmanship warranty matters because many roof problems come from installation details, not just bad shingles. Common problem areas include flashing, valleys, pipe boots, ridge ventilation, drip edge, underlayment, ice and water barrier, and roof-to-wall transitions.
IWC Roofing offers a 20-year workmanship warranty and typically installs Owens Corning Duration shingles with Owens Corning accessories so the roof is treated as a full system, not a pile of mismatched parts.
Workmanship Warranty vs. Manufacturer Warranty
Roof warranties can get confusing because people use the word “warranty” like it means one thing. It usually does not.
There are two main warranty categories homeowners should understand:
Manufacturer Warranty
A manufacturer warranty is tied to the roofing products. That usually means shingles and eligible roofing system components. Depending on the warranty level, it may cover manufacturer defects and certain costs related to replacing defective materials.
Owens Corning explains that roofing warranties can include standard product warranties and extended warranty protection options, and that Platinum or Preferred Contractors are the roofing professionals authorized to install roofs eligible for those extended warranty options.
Workmanship Warranty
A workmanship warranty is tied to the installation. It is the contractor’s warranty on their labor and installation practices.
That means it may apply when the issue is caused by installation work, such as:
- Improper flashing details
- Incorrect nailing
- Poor valley installation
- Bad pipe boot installation
- Poor roof-to-wall details
- Ventilation mistakes
- Underlayment or ice and water barrier problems
- Ridge cap or starter issues
- Leaks caused by installation errors
A manufacturer may make a great product, but they are not automatically responsible for every installation mistake a contractor makes. That is why the workmanship warranty matters.
Why Workmanship Warranties Matter So Much in Utah
Utah roofs have a tough job. Along the Wasatch Front and upper half of the state, roofs deal with hot summers, cold winters, snow, wind, ice, UV exposure, and freeze-thaw cycles.
The most common Utah roof problems we see are ice damming, under-ventilation, and wear and tear that went unaddressed too long. All three can get worse when the roof was not installed properly.
For example, if a roof is under-ventilated, the attic can hold too much heat and moisture. In the winter, that can contribute to ice damming. If the ice and water barrier is thin, missing, or not installed where it should be, melting snow can work its way into vulnerable areas. If flashing is sloppy, water can sneak in around walls, chimneys, and transitions.
That is why a roof should be installed as a full system. Shingles matter, but so do the parts most homeowners never see.
What Does a Workmanship Warranty Usually Cover?
Every contractor’s warranty is different, so homeowners should always ask for the warranty in writing. Generally speaking, a workmanship warranty is meant to cover issues caused by the contractor’s installation work.
Examples may include leaks or failures caused by improper installation of:
- Flashing
- Underlayment
- Ice and water barrier
- Pipe boots
- Ridge cap
- Starter shingles
- Drip edge
- Ventilation components
- Valleys
- Shingles
- Roof-to-wall transitions
The key phrase is “caused by improper installation.” That is different from storm damage, falling tree limbs, homeowner modifications, neglected maintenance, or damage caused by someone else working on the roof later.
What Is Usually Not Covered by a Workmanship Warranty?
A workmanship warranty is not a magic shield for everything that could happen to a roof.
Most workmanship warranties will not cover things like:
- Hail damage
- Wind damage beyond product or warranty limits
- Tree damage
- Animal damage
- Damage from solar installers, satellite installers, HVAC crews, or other trades
- Homeowner modifications
- Neglected maintenance
- Pre-existing structural issues
- Interior damage not covered by the written warranty
- Product defects that belong under the manufacturer warranty
That does not mean the warranty is not valuable. It just means you need to know what it is actually designed to protect against.
How Long Should a Roofing Workmanship Warranty Be?
You will see a wide range in the roofing industry. Some contractors offer one year. Some offer five. Some offer ten. Some offer longer.
The length matters, but the company behind it matters even more.
A 20-year workmanship warranty from a real local company that uses in-house crews and has a reputation to protect is worth more than a “lifetime warranty” from a storm-chasing company that may be gone before the next winter.
IWC Roofing offers a 20-year workmanship warranty because we want homeowners to feel confident that the installation was done right and that we are willing to stand behind our work.
Why the Company Behind the Warranty Matters
Here is the part nobody loves to talk about: a warranty is only as strong as the company backing it.
If a roofer disappears, changes names, leaves the state, or refuses to answer the phone, the piece of paper does not help much.
That is why homeowners should ask:
- How long has the company been around?
- Are they local to Utah?
- Are they licensed and insured?
- Who is actually installing the roof?
- Do they use in-house crews or subcontract everything?
- Is the workmanship warranty in writing?
- What does it cover?
- What does it exclude?
- What manufacturer warranty will I qualify for?
At IWC Roofing, our Utah work is completed by all in-house crews. That helps with quality control, accountability, and consistency. If there is ever a question about workmanship, homeowners know who did the work and who to call.
How Materials Affect Warranty Coverage
Roofing warranties are not just about labor. The materials and accessories matter too.
A common problem with cheap roof bids is that the roofer may use one brand of shingle, another brand of underlayment, a cheaper ridge cap, and random accessories. That may save a little money upfront, but it can weaken the roof system and may affect warranty eligibility.
IWC most often installs Owens Corning Duration shingles with Owens Corning accessories. That matters because the roof is being installed as a complete system, not just shingles nailed to plywood.
Most IWC customers qualify for a 50-year non-prorated manufacturer warranty that is transferable one time, along with IWC’s 20-year workmanship warranty.
Red Flags With Roofing Warranties
Warranty talk can be a little slippery in roofing, so keep your ears open for these red flags:
- “Lifetime warranty” with no written explanation
- A contractor who will not explain what is covered
- A warranty that only exists verbally
- Mismatched roofing materials that may weaken coverage
- A company with no local history
- A roofer who is not licensed or insured
- A storm chaser pushing urgency after a storm
- A contractor who avoids talking about ventilation, flashing, or ice and water barrier
- A warranty that sounds great but has no clear claim process
If the warranty sounds too good to be true, slow down and ask for the details.
Questions to Ask About a Roof Workmanship Warranty
Before signing a roof contract, ask these questions:
- How long is the workmanship warranty?
- Is it included in writing?
- What installation issues are covered?
- What is excluded?
- Who handles warranty calls?
- Is there a service fee?
- What manufacturer warranty will I receive?
- Are all materials from the same manufacturer system?
- Is the warranty transferable if I sell the home?
- Who is actually installing my roof?
A good roofer should be able to answer those questions clearly. If they act annoyed that you asked, that tells you something too.
Real Utah Example: Repeat Family and Motel Projects
One of the best signs that a warranty and installation process actually mean something is repeat business.
IWC has worked with a family that came back to us for three sibling roof replacements, along with the motel their family owns and operates. That kind of repeat trust does not happen from one slick sales pitch. It happens when the work is done right, the communication is clear, and the company stands behind the project.
A roof warranty matters, but so does the experience before, during, and after the roof is installed.
Frequently Asked Questions
- What is a workmanship warranty on a roof?
- A workmanship warranty is the contractor’s warranty on the installation of the roof. It is meant to protect you if roof problems are caused by installation mistakes.
- Is a workmanship warranty different from a manufacturer warranty?
- Yes. A manufacturer warranty usually covers qualifying product defects. A workmanship warranty covers qualifying installation issues caused by the roofing contractor’s work.
- How long should a roofing workmanship warranty be?
- It varies by contractor. Some roofers offer one to ten years. IWC Roofing offers a 20-year workmanship warranty on qualifying roof replacements.
- Does a workmanship warranty cover storm damage?
- Usually no. Storm damage, hail, falling branches, animal damage, and damage from other trades are typically not workmanship issues. Those may involve insurance or separate repairs.
- Why does installation matter if I buy good shingles?
- Good shingles still need to be installed correctly. Flashing, ventilation, underlayment, ice and water barrier, starter, valleys, and roof details all affect how the roof performs.
- Can mismatched materials affect my roof warranty?
- They can. Many extended manufacturer warranty options depend on using eligible system components and proper installation. That is one reason IWC installs Owens Corning Duration shingles with Owens Corning accessories.
- What workmanship warranty does IWC Roofing offer?
- IWC Roofing offers a 20-year workmanship warranty. Most IWC customers also qualify for a 50-year non-prorated manufacturer warranty that is transferable one time.
- What areas does IWC Roofing serve?
- IWC serves much of the upper half of Utah, with Salt Lake County, Utah County, Davis County, and Weber County being the most common service areas. IWC also serves areas like Park City, Tooele, and surrounding northern Utah communities.