A-1 Roofing’s Kangaroof is one of the top tier Maryland Roofing Companies serving the Columbia Md, Ellicott City Md ,Elkridge Md, Baltimore Md, and Washington D.C. markets. Our roofers specialize in asphalt Architectural shingles for pitched / slanted roofs, natural white single ply PVC membrane for residential and commercial flat roofs and TPO membrane for Residential and commercial flat roofs along with roof restoration for metal roofs and flat roofs. We are a roofing contractor that is proficient at dealing with storm damage, roof repair and roof replacements as well as installing or upgrading gutters and down spouts. We also provide services for various other kinds of services that tie into the roof. We also do siding projects.