We are a family owed roofing company in O'Fallon, IL. 1st Source Contractors is a full-service construction company that can handle all of your roof, siding, gutter and window needs. We have an A+ rating with the BBB. Throughout the years, our focus has always remained the same and that is to, "To deliver the best product and customer service to each of our customers at all times."
Our Project Showcase
Our Awards & Certifications
GAF Master Elite® Certification
Because of stringent GAF standards, less than 2% of all roofing contractors have qualified as a Master Elite® Contractor! Learn More
TRAINING EXCELLENCE AWARD
Signifies that this contractor has been awarded GAF’s Training Excellence Award. Indicates that the contractor has demonstrated an exceptional commitment to ongoing technical training and continuous improvement — for superior roof installation.
Signifies that this contractor is a member of the National Roofing Contractors Association. Membership gives this contractor access to industry-leading training, safety, and installation materials.
Verified Customer reviews
Average Customer Rating-test
(based on 39 Homeowner Reviews)
"PROFESSIONAL & KNOWLEDGEABLE CONTRACTOR"
- T.G., Millstadt IL, Jun 20, 2019
"Totally professional and Sean went out of his way to ensure our roofing needs were met as expected."