24/7 Emergency Service Available

We Stand Behind Our Work

Every job we complete comes with a warranty – because your peace of mind doesn’t end when our truck leaves your driveway


Solid labor warranty

All service and repair work is backed by a 90-day labor warranty.

If you experience the same issue within 90 days of your original repair, we’ll come back out at no charge. Simple as that.

A few things worth knowing

  • Parts needed during a return visit are a separate chargeable item, even within the warranty period.
  • Unrelated issues are not covered. If we replaced your springs and your opener stops working, those are two different problems, and a standard service call would apply for the new issue.

If you have any doubts, give us a call, and we’ll help you figure out whether your situation is covered.


Long-lasting warranties on parts

All parts we install carry a minimum 1-year warranty, and many parts are covered for longer depending on the manufacturer.

Keep in mind that springs and other high-wear components often carry extended warranties beyond the 1-year minimum. If you’re not sure what that means for your setup, we’re happy to let you know how that applies to your specific repair.


Strong warranties for new garage doors

New garage doors are covered under the manufacturer’s warranty, which varies by brand and product line. Warranty terms will be provided at the time of purchase.

If you experience a warranty issue with your new door, feel free to contact us, and we’ll coordinate directly with the manufacturer on your behalf and help move the issue toward a resolution as efficiently as possible. We’ll never leave you to navigate that process alone.


Reliable warranties for entry doors

Entry door warranties follow the same structure as garage doors—labor is covered for 90 days while parts carry a minimum 1-year warranty.

Our fiberglass entry doors carry a lifetime warranty from the manufacturer, making them one of the most durable and worry-free options we offer.


Robust warranties for home remodeling

All remodeling work completed by the Mammoth Construction team is backed by a 1-year warranty. If you have questions about what is covered, we’ll walk you through the details before work begins.


Have a Warranty Question?

Not sure if your issue is covered? Just reach out—we’re happy to take a look and give you a straight answer right away!

*Warranty terms apply to work performed by Mammoth Door & Construction LLC. Manufacturer warranties are subject to the respective manufacturer’s terms and conditions. Contact us for details specific to your repair or installation.


Thoughtful garage door solutions begin with a simple conversation

Real words, real experiences

The kind of experience people feel comfortable recommending

Service was prompt, and exceptional! Everyone we worked with was helpful and knowledgeable.

Rachel Scott

Allyn was professional, punctual, and highly knowledgeable. He repaired my garage door quickly, and the quality of his work was excellent. His pricing was also very reasonable.

Sunil Kumar

Over the years I have used Mammoth couple of times for our garage doors services. We found they’re very good for their quality workmanship, pricing, and professionalism. Brian has earned our trust at the very first time and would use them and referred their services to friends.

Mainul Noor

Tony came by and fixed the front door. excellent service and great work by office people. would recommend.

Dan Rose

Great service, fast, and fair pricing. Showed up within a few hours and worked a miracle on our door. Really happy.

Jim Shaw