covering materials [1]
Materials covering a surface, usually for the purpose of protecting or decorating it.
asphalt shingle 
Roof-covering material, made with a framework (fiberglass, felt) coated with bitumen and covered with fine aggregate.
tar paper 
Paper usually stapled directly to the roof or exterior walls, under the covering, in order to enhance impermeability.
tile 
Hard surface, usually made of baked molded clay, used as a covering for roofs.