US 12,448,775 B2
Insulating radiant barrier factory bonded to cellulosic substrate
Jeffrey Yelle, Hendersonville, TN (US)
Assigned to LOUISIANA-PACIFIC CORP., Nashville, TN (US)
Filed by LOUISIANA-PACIFIC CORPORATION, Nashville, TN (US)
Filed on Mar. 2, 2022, as Appl. No. 17/685,075.
Claims priority of provisional application 63/155,345, filed on Mar. 2, 2021.
Prior Publication US 2022/0282489 A1, Sep. 8, 2022
Int. Cl. E04D 3/35 (2006.01); B05D 1/02 (2006.01); B05D 1/28 (2006.01); B05D 1/30 (2006.01); B05D 7/06 (2006.01); C09D 5/00 (2006.01); C09D 7/65 (2018.01)
CPC E04D 3/351 (2013.01) [B05D 1/02 (2013.01); B05D 1/28 (2013.01); B05D 1/305 (2013.01); B05D 7/06 (2013.01); C09D 5/00 (2013.01); C09D 7/65 (2018.01)] 5 Claims
OG exemplary drawing
 
1. A roof sheathing panel system, comprising:
a core structural layer with an exterior face and an interior face;
a combined insulating radiant-barrier layer covering some or all of the interior face, wherein the insulating radiant-barrier layer comprises a mixture of a radiant barrier paint with low thermal emissivity and a granulated insulated material comprising one or more of cork, aerogel, perlite, expanded polystyrene, extruded polystyrene, poly-iso insulation, or combinations thereof, and said radiant barrier paint comprising aluminum or copper;
a roofing underlayment on the exterior surface of the core structural layer;
a plurality of roofing shingles on the roofing underlayment;
wherein said granulated insulating material has a thermal conductivity at or below 0.05 W/m·K; and
wherein the combined insulating radiant-barrier layer has an emissivity value of from 0.10 to 0.25.