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ACI Exteriors

Since 2001, ACI Exteriors, has been serving residential and commercial properties in St. Louis and all surrounding communities with their roofing, siding, window, and gutter needs. This business is built around “Quality, Integrity, and Value”; three ideals that, Owner, Shawn Gaffney and his experienced staff live up to with every project!

Owner Shawn Gaffney served in the U.S. Marine Corps before opening his own business over 20 years ago. He has built his business on his Midwest values, integrity, and honesty. He believes in being fair, providing excellent service with an exceptional product, and developing solid business relationships.

We understand that installation and repairs performed on roofs, siding, windows, and gutters, are generally a substantial investment.

When these needs arise, you need to know you are working with a
reputable company in whom you can trust to do an exceptional job and at a reasonable price!

Signs of damaged roofing or gutter systems often go unnoticed, which can lead to serious problems, even to the interior of the home. 

High winds, rain, or snow can cause damage to roofs, gutters, and siding.

 ACI Exteriors is an experienced, professional company who provides thorough roof inspection.  

We work with Real Estate and Insurance companies, meet with the Insurance adjusters, and provide a FREE No Obligation estimate.

As the first and oldest Master Elite Certified Contractor in the area, ACI Exteriors provides a 50-year shingle warranty and up to a 30-year warranty on workmanship and labor.

ACI Exteriors has earned the Certification of being a GAF “Certified Master Elite” Roofer! Due to the stringent standards; only 1% of all roofing companies locally, and 3% nationally have achieved this status!

Over 100 5-Star rated reviews! 1st & oldest GAF Master Elite Certified* Installer in


1456 Triad Center Dr. Suite B
Saint Peters



Monday           7:00AM-10PM

Tuesday           7:00AM-10PM

Wednesday     7:00AM-10PM

Thursday         7:00AM-10PM

Friday               7:00AM-10PM

Saturday          7:00AM-10PM  

Sunday             7:00AM-10PM


© 2021 ACI Exteriors All Rights Reserved. 1456 Triad Center Drive, Saint Peter, Missouri 63376.