Patent ID: 8268737

Claim:
An insulation board having a non-elastic core and having at least one surface thereof bonded to an uncoated surface of a facer, wherein the insulation board has a thickness which is within the range of 0.2 inches to about 6 inches, wherein the non-elastic core is comprised of a foamed polymer selected from the group consisting of foamed polyurethane modified polyisocyanurate and foamed phenol-formaldehyde, wherein the facer is manufactured by a process comprising (1) applying a monomeric composition to a fiber mat, wherein the fiber mat is a non-asphaltic, non-cellulosic fiber mat, and wherein the monomeric composition is comprised of a monomer and a filler, wherein the monomer is selected from the group consisting of acrylate monomers and methacrylate monomers, wherein the monomeric composition is void of photoinitiators, wherein the monomeric composition consists substantially of solids, (2) initiating polymerization of the monomer within the monomeric composition by exposing the monomeric composition to an electron beam, and (3) allowing the monomer to polymerize to produce the flexible facer.