New PAC-Shield CV Roof Vent Improves Efficiency, Extends Roof Life Petersen expands it PAC-CLAD line of architectural metal cladding systems with the launch of its new PAC-Shield CV roof venting system. PAC-Shield CV is a ventilated composite insulation panel that includes a 4x8-ft. layer of closed-cell rigid polyisocyanurate, integrated solid wood spacers that create a… The post New PAC-Shield CV Roof Vent Improves Efficiency, Extends Roof Life appeared first on Modular Building Institute.
