A corrugated metal roof shingle provided with flashing of asphalt felt associated with the courses of overlapping shingles so that any water which blows under the shingles will drain out over a lower shingle. The shingles and flashing are arranged so that the nails which secure the shingles in place pass not only through the shingles but also through three layers of asphalt felt. The corrugation of the shingle provides maximum rigidity, hail resistance and ventilation under the shingle. The shingles have a shallow channel along one side edge thereof facing outwardly or upwardly and the lower edge thereof is inturned at a shallow angle with the shingles being provided in any suitable color, etch finished or the like with the structure of the shingle enabling ease of application and low manufacturing cost as well as being highly resistant to wind and easy to cut on an angle to fit a roof valley, hips, openings and the like with the fireproof characteristics of the shingles enabling a lower insurance rate thus not only providing a roof which is economical but also one which is long lasting and durable and impervious to deleterious effects of climatic conditions.