Local Roofing Company in Edwardsville IL & St Louis MO Areas. Treehouse Roofing is a leading and reputable roofing company based in the Edwardsville/Glen Carbon IL area and St. Louis MO. Ever since we opened for business, taken a comprehensive approach to project management, providing our clients with a wide range of services to cover their needs. Get in touch today to learn more about what we can offer you and to receive your free estimate.