Learn how to check if your commercial roof is under warranty. Discover the key documents, warranty types, and who to contact. Roof Nuts helps with claims.

How do I know if my commercial roof is under warranty?

Commercial Roofing FAQs
June 09, 2025•2 min read

How Do I Know If My Commercial Roof Is Under Warranty?

Many Florida business owners aren’t sure if their roof is still covered. Here's how to find out quickly—and what to do if you're unsure.

1. Check Your Installation Paperwork

Start with your original roofing contract or proposal. These often include:

  • Project start and completion dates

  • Warranty type and length

  • Who issued the warranty (roofer and/or manufacturer)

If you can’t find the documents, contact your original roofer or the building owner before you. If Roof Nuts installed it, we can help you locate your records.

2. Identify the Warranty Type

There are typically two types of commercial roofing warranties:

  • Workmanship Warranty
    Provided by the contractor. Covers labor-related issues. Usually 1 to 10 years.

  • Manufacturer’s Warranty
    Covers materials like TPO, metal, or modified bitumen. Often 10 to 30 years depending on system and thickness.

Warranties may also be:

  • NDL (No Dollar Limit): Covers full repair costs

  • Prorated: Coverage decreases over time

3. Look for Warranty Documents from the Manufacturer

Major commercial roofing systems like GAF, Johns Manville, or Carlisle typically issue their own certificate. This includes:

  • Warranty registration number

  • Roof system details

  • Coverage terms

If you don’t have this, the roofing contractor or manufacturer’s rep may be able to retrieve it with your address.

4. Confirm Regular Maintenance Was Performed

Many warranties require:

  • Annual inspections

  • Debris removal

  • Minor repairs

Failure to do this may void the warranty. Roof Nuts offers commercial roof maintenance programs that help keep your warranty valid.

5. Ask Roof Nuts for Help

If you're unsure, call Roof Nuts at 904-694-3426. We help Florida business owners:

  • Review documentation

  • Contact manufacturers

  • File claims for covered damage

  • Maintain warranty compliance

FAQs

How long do commercial roof warranties usually last?
Most last between 10 and 30 years depending on the material and warranty type.

Can a warranty be transferred if I bought the building?
Sometimes. Check the original documents. Some manufacturers allow transfer within a limited time after ownership change.

What voids a commercial roofing warranty?
Typical issues include:

  • Improper repairs

  • Unapproved roof coatings

  • Neglected maintenance

  • Unauthorized penetrations (like satellite dishes or HVAC)

Does insurance cover what warranties don’t?
Not always. Warranties cover defects or workmanship. Insurance covers storm or accidental damage. You may need both.

Need help figuring it out?
Call Roof Nuts today at 904-694-3426 — we’ll guide you through it. Serving Jacksonville, Miami, Tampa, Orlando, and all of Florida.

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