2. What is the predominant material in the roof of the dwelling?[] 1 Sheets of concrete, bovedilla [type of vault], with or without tilesSheets of zinc, fibro cement, aluminum, asphalt tiles, tiles over framework:[] 2 With a flat roof[] 3 Without a flat roof[] 4 Straw[] 5 Tin and other waste material[] 6 Other (specify) ____