RJ Grimes has been improving the value of homes throughout Maryland and Southern Pennsylvania for a quarter of a century. As a locally-owned and operated home improvement contractor, RJ Grimes is a fully bonded, insured, and MHIC-licensed contractor (MHIC #87834). We take pride in our solid record of providing residential roofing, siding, window, and gutter installations and repairs. We believe that your home deserves a commitment by our entire staff to deliver the highest quality workmanship and the finest materials. We are proud of our consistent A+ rating with the Better Business Bureau (BBB) and Angie’s List.