Vacuum Service Contractor. RK Hydro-Vac, Inc. has been in business since 1981 providing top-quality, professional, roof prep for industrial and commercial flat roof contractors. We utilize our Dry-Vac, Wet-Vac, Ballast Removal and Ballasting systems to optimize your project results. We are capable of handling unique work requirements (ie: building heights, high profile projects, set up areas, work hours). We have built a team that is beyond compare, call us for your next project.