A cement-based tile formed from a mixture comprising: a cement in the range of about 0.1 to 88% by wet weight percent; a secondary material in the range of about 0.1 to 50% by wet weight percent, the secondary material comprising limestone, sand, silica sand, gypsum, silica fume, fumed silica, Plaster of Paris, calcium carbonate, fly ash, slag, rock, or a combination thereof; a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent, the reinforcement fiber comprising cellulose fiber, glass fiber, plastic fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, homopolymer acrylic fiber, alkali-resistant fiber, or a combination thereof; a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent; a water in the range of 10 to 60% of a total wet material weight; and wherein the mixture is extruded or molded to form the cement-based tile.

A glass roof shingle includes a shingle cover layer made of a glass. A shingle base layer is disposed underneath the shingle cover layer. The shingle base layer and shingle cover layer define a cavity. A seal area formed between the shingle base layer and shingle cover layer and around the cavity controls ingress of moisture into the cavity. A photovoltaic module may be disposed within the cavity.

A glass roof shingle includes a shingle cover layer made of a glass. A shingle base layer is disposed underneath the shingle cover layer. The shingle base layer and shingle cover layer define a cavity. A seal area formed between the shingle base layer and shingle cover layer and around the cavity controls ingress of moisture into the cavity. A photovoltaic module may be disposed within the cavity.

Compositions comprising asphalt and corn oil are provided, as are the shingles made using the compositions, methods for making the compositions, and methods for making the shingles. The compositions comprise mixtures of asphalt and corn oil, and the mixtures are oxidized to attain desirable properties.

Compositions comprising asphalt and corn oil are provided, as are the shingles made using the compositions, methods for making the compositions, and methods for making the shingles. The compositions comprise mixtures of asphalt and corn oil, and the mixtures are oxidized to attain desirable properties.

A porcelain roof tile installing system that comprises: a roof tile having a porcelain body provided with an attachment hole; a nail for being inserted into the attachment hole of the roof tile thereby installing the roof tile to a roof structure; a nail gun for pushing the nail into the attachment hole; wherein the nail gun has a centering element configured to be coupled with the attachment hole.

A porcelain roof tile installing system that comprises: a roof tile having a porcelain body provided with an attachment hole; a nail for being inserted into the attachment hole of the roof tile thereby installing the roof tile to a roof structure; a nail gun for pushing the nail into the attachment hole; wherein the nail gun has a centering element configured to be coupled with the attachment hole.

A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 m or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 m or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

A glass roof shingle includes a shingle cover layer made of a glass. A shingle base layer is disposed underneath the shingle cover layer. The shingle base layer and shingle cover layer define a cavity. A seal area formed between the shingle base layer and shingle cover layer and around the cavity controls ingress of moisture into the cavity. A photovoltaic module may be disposed within the cavity.