Plurality of granules comprising a ceramic core having an outer surface and a shell on and surrounding the core, wherein the shell comprises ceramic particles bound together with an inorganic binder, the inorganic binder comprising reaction product of at least alkali silicate and hardener, wherein the ceramic particles are present as greater than 50 percent by weight of the shell of the respective granule, based on the total weight of the shell of the respective granule, wherein the shell of each granule has a total porosity in a range from greater than 0 to 60 percent by volume, based on the total volume of the shell of the respective granule, wherein the shell of each granule has a volume of at least 40 volume percent, based on the total volume of the respective granule, and wherein the granules have a minimum Total Solar Reflectance of at least 0.7. The granules are useful, for example, as roofing granules.

Embodiments may include a coated granule for roofing systems. The coated granule may include an aluminum silicate granule and a coating disposed on the aluminum silicate granule. The coating may include a copolymer and a siloxane-based or a silane-based compound. The copolymer may be a cationic fluorinated (meth)acrylic copolymer. The aluminum silicate granule may have a particle size in a range from 0.2 mm to 2.4 mm. The aluminum silicate granule may have a 65% or greater reflectivity. The coated granule may repel oil and maintain its reflectivity better than with other techniques.

An inverted roof membrane assembly comprising: a) a waterproofing membrane suitable for direct or indirect mounting on top of a roof decking, b) at least one layer of the polymer foam insulation board directly or indirectly on top of a), c) a flame-resistant fabric shield directly or indirectly on top of b), said flame-resistant fabric shield having a water vapor permeability of 1.0 perm or greater; and d) a ballast layer directly or indirectly on top of c).

A plurality of granules comprising ceramic particles bound together with an inorganic binder, the inorganic binder comprising reaction product of at least alkali silicate and hardener, wherein the ceramic particles are present as at least 50 percent by weight of each granule, based on the total weight of the respective granule, wherein each granule has a total porosity in a range from greater than 0 to 50 percent by volume, based on the total volume of the respective granule, and wherein the granule has a minimum Total Solar Reflectance of at least 0.7. The granules are useful, for example, as roofing granules.

Plurality of granules comprising a ceramic core having an outer surface and a shell on and surrounding the core, wherein the shell comprises at least first concentric layers, wherein the first layer comprises first ceramic particles bound together with a first inorganic binder, wherein the first inorganic binder comprises reaction product of at least alkali silicate and hardener, wherein the shell of each granule collectively has a volume of at least 40 volume percent, based on the total volume of the respective granule, and wherein the granules have a minimum Total Solar Reflectance of at least 0.7. The granules are useful, for example, as roofing granules.

A method is provided for forming an adhered membrane roof system. The method comprises applying a bond adhesive to a substrate on a roof to form an adhesive layer and applying a membrane directly to the adhesive layer. The bond adhesive includes a polymer having a silicon-containing hydrolyzable terminal group.

A solar heat-reflective roofing product includes a base sheet, and solar heat-reflective roofing granules on top of the base sheet. The granules have a base particle with a flake-like geometry covered by a uniform coating layer. The coating layer has a thickness of at least one mil and includes a coating binder and at least one solar heat-reflective pigment. The solar heat-reflective pigment provides a solar heat reflectance of greater than 70 percent to the granules and the roofing product. Roofing products including roofing shingles and roofing membranes are described.

Photocatalytic roofing granules include a binder and inert mineral particles, with photocatalytic particles dispersed in the binder.

Embodiments may include a coated granule for roofing systems. The coated granule may include an aluminum silicate granule and a coating disposed on the aluminum silicate granule. The coating may include a copolymer and a siloxane-based or a silane-based compound. The copolymer may be a cationic fluorinated (meth)acrylic copolymer. The aluminum silicate granule may have a particle size in a range from 0.2 mm to 2.4 mm. The aluminum silicate granule may have a 65% or greater reflectivity. The coated granule may repel oil and maintain its reflectivity better than with other techniques.

The invention relates to ceramic granules with a high UV opacity and high solar reflectance, which is produced by forming a calcined clay mineral powder into green body and re-calcining, featured with a water absorption of 15-35%; 97% crystalline content and 90-100% UV opacity. The invention further relates to a method for preparing ceramic granules with a high UV opacity and high solar reflectance and the use thereof for reflectance-improving application on building surface for the purpose of energy conservation.