© J.D. Rock Custom Home Improvements 2011 - Frederick, MD. J.D. Rock Custom Home Improvements Contact us directly with any questions you may have while we finish reloading our website. Main: 301-788-8972 Email: info@jdrock.com Call today for a free estimate: 301-788-8972 or email: info@jdrock.com MHIC# 123100 - Fully Insured