A roofer's certification usually means one thing: the shingle maker has let that company register its enhanced warranties. Programs generally require some training, a test or an inspection of past work, and a sign-up with the maker. It does not mean the roofer is licensed, insured or good at the job, and no maker vouches for the work. The makers say so themselves in their paperwork. Treat a badge as one fact to check, not as a verdict, and verify it with the maker before you rely on it.
This guide explains the common kinds of credential and what each one does and does not prove. It is general information, not legal or insurance advice, and it does not rank any maker or program.
The credentials you will hear about
Three different things share the word "certified."
| Credential | Who earns it | What it generally shows |
|---|---|---|
| Manufacturer installer program | A roofing company | The maker accepted the company into its contractor program. The level decides which warranties it may register. |
| Trade-association membership | A roofing company | The company joined a body such as NRCA. |
| Individual skills certification | One worker | That person passed an exam on installing a roof system. |
The first is the badge on trucks and yard signs. Our guide to shingle makers and their warranty tiers lists the program names for four makers, and this page explains what they mean.
What manufacturer programs generally require
Each maker sets its own rules, and the public pages say less than you might expect. Here is what we could read on October 13, 2026.
- Malarkey says a Certified Pro contractor completed hands-on training led by a Malarkey representative and passed a test. To offer the Pro warranty, the contractor must install a full Secure Choice roof system with at least three Malarkey accessories. A Certified Premium contractor finished advanced training and had its work inspected by Malarkey's technical team, and must install a complete system with at least four accessories to offer the top warranty.
- TAMKO lists four levels in its program, Team TAMKO, Gold, Platinum and Diamond. The page says each level can offer a set list of warranties, with the entry level limited to the standard warranty. It does not list qualification rules, and says the details are in a contractor agreement.
- Owens Corning names Preferred and Platinum Preferred contractors. The Owens Corning pages we could read did not state qualification rules, so we cannot tell you what the levels require.
Other makers also run programs, and their sites refused our requests, so we do not describe their rules. If a roofer claims one of them, ask the maker what the badge requires.
So "programs generally require" training, a test or inspected work, and installing the maker's products as a system. Beyond that, the criteria are the maker's own, and they change.
What a certification gets you: the enhanced warranty
The real benefit is access to warranties the standard shingle warranty does not offer. The Owens Corning Platinum Protection warranty, dated for shingles bought after August 1, 2026, is a clear example. It says:
- The whole roofing system must be installed by a Platinum Preferred Contractor, and that contractor must register the warranty within 60 days of installation.
- Its workmanship terms are valid only if that contractor installs the roof.
- The shingle maker does not cover non-Owens Corning parts such as flashing, fasteners, pipe boots and wood decking.
- For the first two years, a claim from an application error falls to the installing contractor to repair. If that contractor cannot or will not, Owens Corning arranges the repair.
TAMKO's page ties each of its system warranties to the contractor's level in the same way. A roofer without the right level cannot sell you the warranty. Our guide to what a roof warranty covers covers proration, transfers and what voids coverage.
Notice the structure. The warranty makes the maker responsible for products, and the roofer responsible for early workmanship. A certification is the key that unlocks that arrangement. It is not a promise about the crew you get.
What a certification does not prove
| Question | Does a badge answer it? |
|---|---|
| Is the company licensed? | No. A credential is not a license, and the FTC says to confirm a license with your state or county. |
| Is it insured? | No. NRCA says to ask for copies of liability and workers' compensation certificates and to confirm they stay in effect for your job. |
| Is it the maker's employee or agent? | No. TAMKO's program page states its contractors are not employees, agents or representatives of TAMKO. |
| Will the job be done well? | Not guaranteed. The program shows training or a past inspection, not your roof. |
| Is its price fair? | No. Compare estimates yourself. |
Programs also reward sales. TAMKO's page, for example, lists cash-back rewards that rise with the level. A contractor in a program may have a reason to suggest that maker's product, which is normal but worth knowing. Our guide to roofing scams lists the claims that should make you cautious, and our guide to free roof inspections covers the sales visit that often brings a badge up.
Individual certifications and association membership
NRCA, the roofing contractors' trade association, runs ProCertification for individual workers. Its page describes a nationally recognized program for validating roof-system installation knowledge, organized by roof-system type and role, and says a worker applies for a designation and earns certification of that person's skills. The page does not say whether companies can be certified, so a ProCertified crew member does not tell you the company is. NRCA also says that association membership shows a commitment to the industry and professionalism, and recommends checking for it. Membership is not a skills test or a license either.
How to verify a certification
- Ask for the program name and level in writing on the estimate, along with which warranty it lets the roofer register.
- Check with the maker. Use the maker's own contractor locator or ask its customer service whether the company is listed at that level.
- Ask who registers the warranty and when. Owens Corning's document puts the deadline at 60 days.
- Get the warranty document before you sign. Confirm that the estimate names the products the warranty requires.
- Do the regular checks anyway. License, insurance and references come first. Our guide on what to check before you hire a contractor and our questions to ask a roofer cover them.
Frequently asked questions
Does a certified roofer cost more?
We found no neutral source that prices certified roofers against others, so we cannot say. What changes is the warranty you can buy, and that may be part of the price. Compare estimates item by item.
Can any roofer offer an enhanced warranty?
No. The makers' documents tie enhanced warranties to program levels. Owens Corning's Platinum Protection document requires a Platinum Preferred Contractor, and TAMKO's page lists which levels may offer which warranties.
Is a certified roofer licensed?
Not necessarily. A credential is separate from a license. Confirm the license with your state or county, as the FTC advises.
Who fixes a problem if the roofer goes out of business?
It depends on the warranty. In the Owens Corning document, the maker arranges the repair if the contractor cannot or will not do a first-two-years claim. Other warranties differ, so read the one you are offered.
Is a certification the same as a good reputation?
No. Check references and reviews separately, as NRCA and the FTC recommend.
Where this information comes from
HomeAnvil does not rank roofers or makers. Each fact on this page comes from the source named beside it, all read on October 13, 2026:
- Owens Corning, Platinum Protection Limited Lifetime Warranty: the installer requirement, 60-day registration, workmanship terms and the first-two-years obligation. The document covers shingles bought after August 1, 2026.
- TAMKO, the TAMKO Edge contractor program: the four levels, the warranties each may offer, and the statement that contractors are not TAMKO's employees or agents.
- Malarkey Roofing Products, warranties: Certified Pro and Certified Premium training, test and inspection, and accessory counts.
- NRCA, ProCertification: the individual-worker program.
- NRCA, Selecting a contractor: insurance certificates, references and association membership.
- FTC Consumer Advice, How to avoid scams after weather emergencies and natural disasters, September 2025: confirming a license with your state or county, and proof of insurance.
GAF and CertainTeed also run programs. Their sites refused our requests, so this page does not describe their rules. Program terms change, so we will update this page when the makers' documents do.





