TMJ Construction Services based in Ames, Iowa recently opened a 2nd location - TMJ Roofing Services at 2120 SE 44th Ct. in Grimes. TMJ is a family-owned exterior contractor that uses only quality products for your home. From your roof and gutters, to siding our exterior specialists will help you protect your most valuable investments. Call our office at 515-965-9865 for an free estimate today!