Dawson Roofing From minor repairs to total replacement, make Dawson Roofing your quality contractor for a beautiful, long-lasting roof. Committed to excellent workmanship and installation, our business depends on your satisfaction. As specialists in residential and commercial roofing, we serve Missouri and Illinois. We’re fully insured, carrying both public liability and workman’s compensation coverage. We back our work with a list of satisfied customers in your area. And we guarantee your job will be started in two to three weeks under normal conditions. We perform work continuously until the job is completed, weather permitting.