by on December 30, 2023

How long is the warranty on a roof?

Understanding Roof Warranties: A comprehensive guide to navigating manufacturer's and workmanship warranties, including insights into maintenance requirements, exclusions, and the distinction between warranties and insurance considerations. Prioritize informed choices for your roofing project by delving into crucial warranty details before material and contractor selection.

  • Manufacturer's Warranty:
    For a residential roof the manufacturers warranty is generally 30 years which covers defects in the material. This depends on the type of roofing material and must be installed within the manufacturers guidelines. You can get a quality assurance check from roof buddy after installation to check that it has been installed correctly.
  • Workmanship Warranty:
    Roofers will offer a workmanship or installation warranty. This type of warranty covers issues related to the installation of the roof, such as leaks or problems arising from poor workmanship. The length of time is usually 5 years but you can check this with you individual roofer.
  • Maintenance Requirements:
    Many warranties have maintenance requirements that must be met for the warranty to remain valid. For a standard New Zealand residential property this is generally just rain washing.
  • Exclusions and Limitations:
    Warranties often come with exclusions and limitations. It's important to carefully read and understand the terms and conditions of the warranty. Common exclusions may include damage caused by extreme weather events, improper maintenance, or modifications made to the roof without approval.
  • Insurance Considerations:
    Warranties are different from insurance. While warranties cover defects and workmanship issues, insurance may be necessary to cover damage caused by unforeseen events, such as storms or accidents. Verify whether your roofing warranty includes any insurance-related coverage.


Before selecting a roofing material or contractor, carefully review the warranty information provided by the manufacturer and the contractor. Keep records of inspections from Roof Buddy and maintenance activities to ensure compliance with warranty requirements.