A1 Certified Contracting, LLC

4.83 |7 Verified Ratings
Write a Review

A1 Certified Contracting, LLC

4.83 | 7 Verified Ratings
Write a Review


1685 S Colorado Blvd
Denver, CO 80222
Your use of our services is governed by our Terms & Conditions

A1 Certified Contracting, LLC

Roofing experts are at your Service

YOU'VE FOUND A HIGH QUALITY CONTRACTOR FOR YOUR PROJECT! FREE CONSULTATION A1 Certified Contracting has built its high reputation as a leading Roofer in Denver based upon quality workmanship, using best roofing materials, and customer service. We specialize in residential and commercial roofing services. We are a locally owned company with over 25 years experience as Colorado roofing contractors. We serve the roofing needs of the entire Colorado Front Range area with offices in Denver, Colorado Springs, and Northern Colorado. We provide your home or business with superb workmanship, and we can handle any roofing projects in Colorado. A1 Certified Contracting installs and repairs all types of Tile Roofing. Clay tile, ceramic, concrete, and slate tile roofs will last longer, require less maintenance, are more cost effective in the long term, and also a beautiful styling option enhancing your home’s value. SEE OUR WEBSITE FOR MORE INFO! Thank you.


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Service Area

  • Denver
  • Aurora
  • Littleton
  • Westminster
  • Thornton
  • Englewood
  • Arvada
  • Wheat Ridge
  • Broomfield
  • Boulder
  • Brighton
  • Castle Rock
  • Lone Tree
  • Golden
  • Parker
  • Commerce City
  • Evergreen
  • Erie
  • Frederick
  • Firestone
  • Lafayette
  • Bennett
  • Franktown
  • Elizabeth
  • Dupont
  • Eldorado Springs
  • Dacono
  • Henderson
  • Morrison
  • Kittredge
  • Louviers
  • Fort Lupton
  • Indian Hills
  • Hudson
  • Conifer
  • Watkins
  • Louisville
  • Idledale
  • See All >

Services Offered


Areas of Expertise

  • Roofing & Gutters
  • Tile Roofs
  • Leak Repair
  • All types of Roofing
  • Siding

Product Brands Used

  • Allied Construction Industries
  • CertainTeed (Bufftech)
  • Elk Corp
  • GAF
  • Owens Corning
  • Tamko

Quick Facts

Business Hours
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
8:00 AM to 5:00 PM
(Please call to confirm)
  • Small Jobs Welcome
  • Warranty Offered
  • Free Estimates
  • Materials
  • Trip Charge
  • Warranty Description: 5 Year Warranty


In Business Since: 2015
Memberships & Affiliations
  • National Roofing Contractors Association (NRCA)
  • GAF/ELK Master Elite Certified Installer
  • Master Shingle Applicator - Lakewood, CO
  • Hague Certified
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Business Overview

Community Involvement

Former Official Roofing Company of the Denver Broncos

Locally Owned and Operated

How We Got Started

We started in this industry in 1985.

We describe our business as Well established

What separates you from other Roofing Contractors?

We have over 50 years experience in repairing leaks, re-roofs and various construction projects

Free Offer! Get Free Inspection free when you Call or Email us Free Offer!
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Ratings & Reviews
A1 Certified Contracting, LLC

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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4.0   |  
Review by in Denver, CO
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5.0   |  
Review by in Hudson, CO
They were very professional and did what they said they would do, when they said they would do it. The work appears to have been done well. I would definitely use them again.
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5.0   |  
Great initial contact and very knowlegable with this contractor.
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5.0   |  
Review by in Firestone, CO
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5.0   |  
We were informed of what needed to be done to fix the problem. The work was done efficiently and timely.
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5.0   |  
Review by in Broomfield, CO
My roof just got fixed by Jack this afternoon. As for quality, seems great but I guess I won't know for sure till the next storm :). I do like Jack's responsiveness. Also, he is prompt, friendly, careful while working, and everything was done nicely with very reasonable price. He went above and beyond to inform me of other issues (i.e. pest issue) that he noticed while fixing my roof and even took care of some it. I would definitely recommend Jack to others.
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5.0   |  
Review by
Project: Install or Repair a Roof
Nice communication between customer and company. Exceptional. the steps were well documented,informed prior to work done, informed well while in process excellent executed which allowed me to plan and executed my labor in the process. The main contacts in that company were fantastic to work with. I got excellent product chosen by me with upgrades of what was above and beyond quoted the price was below estimate our pocket I would highly recommend them.
Showing 1-7 of 7
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  1. Verify Trade License
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  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
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  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
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