Overview
About Us
This residential contractor is a GAF Factory-Certified Contractor. GAF trains and tests thousands of the best roofers in the country and makes sure they're appropriately licensed and insured so they can offer the best warranties.
*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.
Customer Reviews

"Very happy with Dan and the crew at Guarantee!!"
"Dan and his crew did an excellent job replacing my roofing tiles and gutters after a season of massive Colorado hail storms. He was always there exactly when he said he would be, and the work was efficient, really really nice looking, and cost effective. He did an excellent job dealing with my somewhat difficult insurance company as well. I would absolutely use him again!"
"Guarantee Construction Group replaced my concrete roofing tiles with synthetic composite tiles as the result of hail damage. The crew did an excellent job, and always made certain the work site was picked up at the close of each day. I would highly recommend Guarantee Construction Group."
Awards
Installation Excellence Award
This award is for contractors that consistently install with a very high level of quality and provide their customers the highest protection that GAF offers.
Consumer Protection Excellence Award
This award recognizes those contractors that best protect their clients with system selling and enhanced warranties.
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