Yes — and understanding what your warranty actually covers is one of the most important things you can do before choosing a contractor or a product. Not all warranties are created equal, and the difference between a standard warranty and a quality one is significant.

There are two types of warranty that apply to your roof:

Workmanship Warranty This covers the quality of the installation itself — if something fails because of how the roof was installed rather than the materials, the workmanship warranty is what protects you. Mountain Roofing provides a one-year workmanship warranty on every installation we complete.

Manufacturer Warranty This covers the roofing materials themselves against defects and failure. The strength of a manufacturer warranty depends on two things — the product and the contractor installing it.

As an Owens Corning Preferred Contractor, we’re able to offer the Owens Corning Preferred Warranty — one of the strongest warranties available in residential roofing:

  • 50 years non-prorated on materials — meaning the coverage doesn’t diminish over time the way a prorated warranty does
  • 15 years at 130 MPH wind resistance — particularly meaningful in Montana where wind is one of our biggest weather threats
  • 10 years on workmanship — covered directly by Owens Corning, above and beyond our own workmanship warranty

There’s an important condition attached to the Preferred Warranty — it requires that five Owens Corning components be used in the installation. It’s not enough to install Owens Corning shingles alone. The underlayment, starter strip, ridge cap, and other components must also be Owens Corning products. We spec all five components on every qualifying installation because cutting corners on any one of them voids the warranty you’re paying for.

A few things that void the Owens Corning Preferred Warranty regardless of installation quality:

  • Spray foam insulation in the attic
  • Improper ventilation

If a contractor is offering you an Owens Corning warranty but isn’t a Preferred Contractor, the warranty they can provide is meaningfully less comprehensive. It’s worth asking.