Welcome to A1 Contracting, Inc
Specializing in Roofing Services, Gutter Services, Siding Services, and More
Serving Denver and the Surrounding Areas
Why Choose Us?
- Local, Multi-Generational Family Owned Business
- More Than 55 Years Of Hands-On Experience
- A+ BBB Rating
- Experienced With A Variety Of Materials
- Reputation Based On Services, Safety, And Quality
- Both Residential And Commercial Services
- Devoted To Customer Experience
- FREE Consultations
Give us a call today
Don’t forget to inquire about our 5% off Veteran Discount or our Current Offer for a $500 gift card for a signed contract for a complete re-roof! Ask your A1 professional for more details.
Roofing Services
Is your roof in tip-top shape? A damaged or leaking roof can cause big problems if you do not fix it. Our team has you covered. From roof repair to replacement, we make sure the roof over your home or business is leak-free, well-built, and attractive—adding value to your property. If you think your roof has sustained damage or it may be nearing the end of its life, reach out to our residential and commercial roofing company for a free inspection and estimate. If working with an insurance company, we will be there to help walk you through the entire process, such as filing any necessary supplements, from start to finish.
We specialize in:
- Roofing repairs and maintenance
- Roof leaks
- Roofing installation and replacements
- Roof inspections and consultations
- Siding installation and replacement
- Residential and commercial services
- And much more



Gutter Services
Eventually, your home’s exterior gutter system is going to need repair or replacement. The good news is that we are here when you need us. When it comes to gutter services, you can rest assured that we will make sure they are appealing and effective. We specialize in:
- Gutter installation
- Gutter replacements
- Variety of gutter options
- Gutter maintenance and repairs
- Gutter inspection and consultation
- Gutter cleaning
- Seamless gutters
- Gutter trucks for 5 & 6" gutters
- Leaf guard installation
- And much more
Our team takes pride in the exceptional work and friendly customer service we provide. Additionally, we take great care to communicate with you in a professional manner, keeping you informed of our progress. It does not matter if you come to us for gutter installation or gutter replacements, we always focus on service, safety, and superior quality work.

What Our Customers Say
"Nate and his crew did an excellent job replacing our roof. Nate communicates timely and answered all my questions. His crew did a very professional job and worked very hard to do a great job. We also had some additional gutter work done. We are very happy with all their work and would recommend calling Nate for any roofing needs."