A1 is a leading NJ contractor proudly serving the northern NJ area. We provide quality and honest roofing, chimney, gutter, masonry and siding services all across the northern NJ area. Our service area includes Bergen, Morris, Passaic, Essex, Union and Hudson County NJ. We offer a multitude of services to keep your chimney, masonry, roof and home exterior in good repair all year long. Trust our professional technicians to provide friendly, competent service while restoring your home.