Hanover Hill Siding and Window provides the highest quality vinyl siding products, vinyl replacement windows and roofing services to home and business owners throughout southern New Hampshire. Expert craftsmanship and continuing customer service set Hanover Hill apart from all other dealers in the Bedford, Londonderry, and Goffstown area. At Hanover Hill Siding and Window, we design and build decks, porches additions and more to improve the value & enjoyment of your home.