Contact Us Contact Armstrong Roofing in San Mateo, FL Serving Putnam, St. Johns, Clay, Flagler Counties & Beyond Armstrong Roofing, Inc. provides a wide range of commercial and residential roofing services in San Mateo, FL and across Putnam, Clay, Flagler, and St. Johns County communities. Our company has been family-owned and operated for three generations. Since our beginning, we have been committed to excellence in customer service and quality workmanship. Please check out the photo galleries below for examples of our past commercial and residential roofing work. For more information about Armstrong Roofing, Inc our services, or to request a free estimate, please contact us today at (386) 325-2023.