Meet the Team

Free Roof Inspection

ACI Roofing and Exteriors offers a free, comprehensive roof inspection service to identify any and all roofing problems.  Schedule your free roof inspection today!

Shawn Gaffney

Shawn Gaffney

Owner, ACI Roofing and Exteriors
(636) 386-4827‬

Meet Shawn Gaffney, the heart and soul behind ACI Roofing and Exteriors. Shawn’s journey began with service to his country in the U.S. Marine Corps, where he honed values of integrity, honesty, and commitment. Over two decades ago, he brought these principles to the roofing industry, founding ACI Roofing and Exteriors on the bedrock of Midwest values.

As both the owner and a Sales Representative, Shawn infuses every aspect of ACI with his commitment to fairness and providing excellent service paired with exceptional products. His belief in developing solid business relationships is evident in the enduring success of ACI. Whether you’re facing the need for roof installations, repairs, or exterior enhancements, Shawn ensures that every customer experiences the highest level of professionalism and honesty.

Shawn’s leadership extends beyond the office as he actively participates in project oversight. Client reviews consistently highlight the professionalism and courtesy of Shawn and his team. From addressing fire damage to meticulous installations and roof replacements, Shawn’s dedication to quality and customer satisfaction is unwavering. ACI’s meticulous attention to detail, commitment to thorough roof inspections, and seamless coordination with Real Estate and Insurance companies are testaments to Shawn’s vision for excellence.

What Customers Say About
Shawn and ACI

I received three bids to strip the old roof and replace it at my home, ACI Exteriors was the successful contractor, they were not the least expensive but the quality of the materials and the integrity and professional knowledge from the owner Shawn Gaffney got them job. Value is the intersection of quality and cost, ACI provided excellent value. My neighbor commented to me how meticulous the staff was in cleaning the work site, after two months I have yet to find a single nail or other debris. ACI, in my opinion is worth consideration for your roofing project, you will be well satisfied.

Verne F, HomeAdvisor Review

Shawn and his guys were so professional and courteous. One of our garages caught fire, it & our back deck completely burned to the ground, this also melted the back of house, which has a large stained glass window. They called a professional stained glass removal & repair company before they even started to assess if any damage had been done. They completed our siding in a timely manner and they did quality work. Our home looks beautiful!! Shaun was always available to answer questions and address concerns from start to finish. I would highly recommend this company.

Christina S, Google Review

I work with Shawn Gaffney for a roof replacement. He was very professional, one time and a man of his word. The customer service was excellent. His crew did an awesome job and the finish product looks great. I could not have welcomed a better experience than what I received from Shawn and his roofing crew.

You guys are awesome and I appreciate your good work and professionalism. I highly recommend ACI.

Pam R, HomeAdvisor Review

We had a serious problem in our attic and needed specific ventilation on the roof in order to resolve it. Shawn came over and looked at it and I explained the attic situation. He understood exactly what we needed, ACI came and installed a new roof with ventilation and we are very satisfied and they did a fine job.

Doug  R, HomeAdvisor Review

Had our roof replaced after hail damage and there were lots of roofers wanting the business. Very grateful to have selected ACI Exteriors as they did all the things they said in the time they said. Very professional and the roof looks fabulous!

Patsy H, Google Review

GAF Golden Pledge® Warranty

Golden Pledge® Limited Warranty from ACI Roofing and Exteriors

Introducing the Golden Pledge® Limited Warranty, available through ACI Roofing and Exteriors, the first and oldest GAF Master Elite® Contractor. This warranty ensures protection against installation errors, manufacturing defects, wind damage, and blue-green algae growth for commercial and multi-family properties.

To qualify for the Golden Pledge Warranty, it is necessary for your Master Elite Contractor to utilize a GAF shingle in addition to incorporating five GAF products into the roofing project. We are proud to share that 95% of the shingles we install are the renowned GAF Timberline HDZ architectural shingles. These shingles provide exceptional durability, reliability, and aesthetic appeal, making them an excellent choice for your roofing needs.

When you choose ACI Roofing and Exteriors, you benefit from the comprehensive coverage of the Golden Pledge® Limited Warranty and gain confidence in the exceptional performance of GAF Timberline HDZ architectural shingles. We are committed to providing superior protection and long-term satisfaction for your commercial or multi-family property.

Contact ACI Roofing and Exteriors today to learn more about the Golden Pledge® Limited Warranty, our extensive range of GAF shingles, and how our expertise can safeguard your valuable property. Trust the leading industry experts who prioritize quality, durability, and your peace of mind.

Roofs for Troops from ACI Roofing and Exteriors

Exclusive Deal for our Brave U.S. Military Troops!

ACI Roofing and Exteriors has an exclusive offer just for you. When you install a qualifying GAF roofing system on your U.S. residence and purchase an Enhanced Warranty, you can receive a $250 rebate. This special opportunity is available to active members, honorably discharged veterans, and retirees of the U.S. military who are legal residents of the country.

To be eligible for the rebate, your GAF roofing system must include GAF asphaltic roofing shingles and a specific number of qualifying GAF accessory products. These accessories encompass ridge cap shingles, attic ventilation, starter strip shingles, roof deck protection, and leak barrier. At ACI Roofing and Exteriors, we take pride in installing the renowned GAF Timberline HDZ shingles in the majority of our projects. 

Don’t miss out on this limited-time offer! Secure your home with a top-quality GAF roofing system and take advantage of the $250 rebate exclusively for U.S. Military Troops. ACI Roofing and Exteriors is dedicated to serving our military community, and we are honored to provide this special benefit to you. Claim your GAF Roofs for Troops rebate today and ensure your home receives the protection it deserves.

Roofs for Troops from ACI Roofing and Exteriors

Proud Member of WSCC

ACI Roofing and Exteriors Western St. Charles County Chamber of Commerce Member

ACI Roofing and Exteriors has joined the Western St. Charles County Chamber of Commerce! This is more than a membership; it’s a commitment to excellence in roofing and a dedication to our vibrant community.

What Sets ACI Apart?
With a legacy of 20+ years, ACI Roofing and Exteriors stands out in the roofing industry. We don’t just fix roofs; we elevate them to withstand time and weather. As Chamber of Commerce members, we bring a promise of top-tier service backed by quality inspections, premium materials, and a team of seasoned professionals.

Beyond Roofs: Trusted Insurance Experts
Your home deserves the best, and so do you. At ACI, we’re not just roofing experts; we’re insurance specialists. Our team is here to ensure your peace of mind, handling everything from inspections to repairs with utmost care.

Featured Project Involvements

Video Gallery

Historical Roof Makeover

FREE Home Assessment After a Storm

Completed Roof through Insurance

GAF Timberline Shingles Colors

Awards Received

BBB A+ Rating
GAF Master Elite Logo
HomeAdvisor Elite Service
ACI Roofing and Exteriors Western St. Charles County Chamber of Commerce Member

Before and After Roof Replacement

The ACI Difference

ACI 20 Years in Business

Over 20 years of excellence

If you’re in the market for a new roof, you want to work with a contractor you can trust to do the job right. That’s why ACI Roofing and Exteriors is proud to be among the top 2% of roofing contractors in North America. We’ve achieved this lofty goal by going through the process of becoming GAF Master Elite certified. As the leading manufacturer of roofing and waterproofing materials in America, GAF products can be found on 1 in 4 roofs across the country. The Master Elite Certification is GAF’s factory certification program that provides ongoing training to roofing contractors, ensuring that they have the skills and knowledge needed to provide quality workmanship. With this highly prestigious award, you can rest assured that your roof will be completed professionally and to the highest standards. So when it comes to finding a roofing contractor you can trust, ACI Roofing and Exteriors is the clear choice.

Insurance Claim Assistance

If a storm has damaged your home, it’s essential to take the proper steps to ensure that your insurance claim is filed correctly. Many homeowners try to deal with their insurance company on their own, but this can be a complex and time-consuming process. It’s important to have a professional roofing contractor on your side who can help you through the process and avoid common mistakes. At ACI Roofing and Exteriors, we have a system in place that will help you get the highest possible settlement from your insurance company. We work with all insurance carriers and are recommended by many popular insurance agencies in the Metro St. Louis area.

Roofing Insurance Claims Assistance - ACI Exteriors
GAF Master Elite Certified

First and Oldest Master Elite Installer in St. Louis

If you’re in the market for a new roof, you want to work with a contractor you can trust to do the job right. That’s why ACI Roofing and Exteriors is proud to be among the top 2% of roofing contractors in North America. We’ve achieved this lofty goal by going through the process of becoming GAF Master Elite certified. As the leading manufacturer of roofing and waterproofing materials in America, GAF products can be found on 1 in 4 roofs across the country. The Master Elite Certification is GAF’s factory certification program that provides ongoing training to roofing contractors, ensuring that they have the skills and knowledge needed to provide quality workmanship. With this highly prestigious award, you can rest assured that your roof will be completed professionally and to the highest standards. So when it comes to finding a roofing contractor you can trust, ACI Roofing and Exteriors is the clear choice.

Lifetime Warranty

When it comes to your roof, you want to be sure you have a product that will last. With our GAF Lifetime Shingles, you can rest assured knowing that your roof will be protected for a lifetime. Plus, with non-prorated coverage for the first 10 years, you’ll have peace of mind in case any problems arise.

GAF Warranty

The ACI Office Team

Shawn Gaffney

Shawn Gaffney

Owner

Laura Okeefe

Laura Okeefe

Office Manager

Amy Smith

Amy Smith

Project Manager

Curt Darabcsek

Curt Darabcsek

Manager

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Quality – Integrity – Value