Mineral-surfaced roofing shingles with increased solar heat reflectance, and process for producing same
An infrared-reflective material is applied directly to the bituminous surface of a roofing product to increase the solar heat reflectance of the product, even when deep-tone roofing granules are used to color the product. The infrared-reflective material can be applied as a powder or in a carrier fluid or film, and can be applied along with infrared-reflective roofing granules.
1. An infrared-reflective roofing product comprising:
(a) a fibrous web coated with a bituminous coating forming a bitumen-coated web,
(b) a coating of at least one powder of an infrared-reflective material applied to the bitumen-coated web, and
(c) roofing granules adhering to the bitumen-coated web.
2. An infrared-reflective roofing product according to claim 1 wherein the roofing granules comprise infrared-reflective roofing granules.
3. An infrared-reflective roofing product according to claim 1 wherein the at least one powder is selected from the group consisting of titanium dioxide pigments, nickel titanate pigments, chrome titanate pigments, nano-TiO 2 particles, light-interference platelet pigments, pearlescent pigments, metal-oxide coated substrate pigments, iron oxide yellow pigments, iron titanium oxides, metal flakes, silica encapsulated metal flakes, light-scattering pigments, and mirrorized fillers.
4. An infrared-reflective roofing product according to claim 1 having an L* value of less than 60 and a solar heat reflectance of greater than 25 percent.
5. An infrared-reflective product comprising:
(a) a fibrous web coated with a bituminous coating forming a bitumen-coated web,
(b) a coating material including a carrier and at least one powder of an infrared-reflective material applied to the bitumen-coated web, and
(c) roofing granules adhering to the bitumen-coated web.
6. An infrared-reflective roofing-product according to claim 5 wherein the roofing granules comprise infrared-reflective roofing granules.
7. An infrared-reflective roofing product according to claim 5 wherein the at least one powder is selected from the group consisting of titanium dioxide pigments, nickel titanate pigments, chrome titanate pigments, nano-TiO 2 particles, light-interference platelet pigments, pearlescent pigments, metal-oxide coated substrate pigments, iron oxide yellow pigments, iron titanium oxides, metal flakes, silica encapsulated metal flakes, light-scattering pigments, and mirrorized fillers.
8. An infrared-reflective roofing product according to claim 5 having an L* value of less than 55 and a solar heat reflectance of greater than 25 percent.
9. An infrared-reflective roofing product comprising:
(a) a fibrous web coated with a bituminous coating forming a bitumen-coated web,
(b) a coating film including a film carrier and at least one powder of an infrared-reflective material applied to the bitumen-coated web, and
(c) roofing granules adhering to the bitumen-coated web.
10. An infrared-reflective roofing product according to claim 9 wherein the roofing granules comprise infrared-reflective roofing granules.
11. An infrared-reflective roofing product according to claim 9 wherein the at least one powder is selected from the group consisting of titanium dioxide pigments, nickel titanate pigments, chrome titanate pigments, nano-TiO 2 particles, light-interference platelet pigments, pearlescent pigments, metal-oxide coated substrate pigments, iron oxide yellow pigments, iron titanium oxides, metal flakes, silica encapsulated metal flakes, light-scattering pigments, and mirrorized fillers.
12. An infrared-reflective roofing product according to claim 9 having an L* value of less than 60 and a solar heat reflectance of greater than 25 percent.
13. An infrared-reflective product comprising:
(a) a fibrous web coated with a bituminous coating forming a bitumen-coated web,
(b) a coating web including a web carrier, at least one powder of an infrared-reflective material and roofing granules, the coating web adhering to the bitumen-coated web.
14. An infrared-reflective roofing product according to claim 13 wherein the roofing granules comprise infrared-reflective roofing granules.
15. An infrared-reflective roofing product according to claim 13 wherein the at least one powder is selected from the group consisting of titanium dioxide pigments, nickel titanate pigments, chrome titanate pigments, nano-TiO 2 particles, light-interference platelet pigments, pearlescent pigments, metal-oxide coated substrate pigments, iron oxide yellow pigments, iron titanium oxides, metal flakes, silica encapsulated metal flakes, light-scattering pigments, and mirrorized fillers.
16. An infrared-reflective roofing product according to claim 13 having an L* value of less than 60 and a solar heat reflectance of greater than 25 percent.
17. An infrared-reflective roofing product comprising:
(a) a fibrous web coated with a bituminous coating forming a bitumen-coated web,
(b) roofing granules applied to the bitumen-coated web to form an intermediate product, and
(c) a coating film including a film carrier and at least one powder of an infrared-reflective material adhering to the intermediate product.
18. An infrared-reflective roofing product according to claim 17 wherein the roofing granules comprise infrared-reflective roofing granules.
19. An infrared-reflective roofing product according to claim 17 wherein the at least one powder is selected from the group consisting of titanium dioxide pigments, nickel titanate pigments, chrome titanate pigments, nano-TiO 2 particles, light-interference platelet pigments, pearlescent pigments, metal-oxide coated substrate pigments, iron oxide yellow pigments, iron titanium oxides, metal flakes, silica encapsulated metal flakes, light-scattering pigments, and mirrorized fillers.
20. An infrared-reflective roofing product according to claim 17 having an L* value of less than 60 and a solar heat reflectance of greater than 25 percent.