A glazing unit is provided for producing an aesthetically pleasing effect. The glazing unit may include at least one polymer with a first structured surface to which a photonic structure is applied. The surface can reflect a first partial spectrum of incident electromagnetic radiation, and can transmit a second partial spectrum of incident electromagnetic radiation. A reflected proportion corresponds to a higher harmonic and is in a visible spectral range.

A system for mounting glass roof tiles on a roof construction includes a roof batten, an S-shaped bracket defining a first U-shaped portion and a second U-shaped portion, a sealing plate and two glass roof tiles arranged side by side along a first longitudinal direction defined by the roof batten. The first U-shaped portion of the bracket is clamped onto the roof batten and retained in relation thereto solely by means of friction and gravity. An end portion of the sealing plate and a lower end portion of each of the glass roof tiles are snugly fit into the second U-shaped portion of the bracket. The glass roof tiles can be mounted on the roof construction in an easy and fast manner without the use of fastening means or tools.

A system for mounting glass roof tiles on a roof construction includes a roof batten, an S-shaped bracket defining a first U-shaped portion and a second U-shaped portion, a sealing plate and two glass roof tiles arranged side by side along a first longitudinal direction defined by the roof batten. The first U-shaped portion of the bracket is clamped onto the roof batten and retained in relation thereto solely by means of friction and gravity. An end portion of the sealing plate and a lower end portion of each of the glass roof tiles are snugly fit into the second U-shaped portion of the bracket. The glass roof tiles can be mounted on the roof construction in an easy and fast manner without the use of fastening means or tools.

A process for preparing roofing granules includes forming kaolin clay into green granules and sintering the green granules at a temperature of at least 900 degrees Celsius to cure the green granules until the crystalline content of the sintered granules is at least ten percent as determined by x-ray diffraction.

A process for preparing roofing granules includes forming kaolin clay into green granules and sintering the green granules at a temperature of at least 900 degrees Celsius to cure the green granules until the crystalline content of the sintered granules is at least ten percent as determined by x-ray diffraction.

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 roof ridge or hip covering element comprising a first flat body, a second flat body, and a flexible sheet for joining together the first and second flat body.

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 process for preparing roofing granules includes forming kaolin clay into green granules and sintering the green granules at a temperature of at least 900 degrees Celsius to cure the green granules until the crystalline content of the sintered granules is at least ten percent as determined by x-ray diffraction.