DeRossi Classic Home Specialists in Londonderry, NH serves Residential, Light Commercial customers. We offer services in Replacement Windows , Vinyl Siding and Roofing. We specialize in Vinyl Replacement Windows, Wood Replacement Windows, Doors, Vinyl Siding, Shutters, Gutters, Roofing. We are proud to have the following certifications and affiliations - Certainteed "Shingle Master" Certification, Certainteed Siding Master , Harvey Window Preferred Dealer, We are also fully Insured, with over 35 years industry experience.