Johns Manville CI Max® is a high efficiency rigid foam sheathing designed for exposed interior applications. It is composed of a uniform closed-cell polyisocyanurate foam core bonded on each side to glass-mat-reinforced 1.5 mil embossed aluminum facers. Available in a white or silver finish, CI Max foam sheathing is approved for use without a thermal barrier and provides an attractive and durable interior finish. It is suitable for wall or ceiling applications in residential, commercial, agricultural and industrial buildings. Polyiso provides a continuous layer of insulation to reduce thermal bridging and improve energy efficiency. CI Max foam sheathing passed NFPA 286 Corner Burn Test for walls only or ceiling only without joint treatment, meeting both the International Code Council’s Building Code Section 2603 and Residential Code Section R316. CI Max foam sheathing is produced with an EPA compliant hydrocarbon-based blowing agent which has zero Ozone Depletion Potential (ODP) and virtually no Global Warming Potential (GWP). It meets CFC- and HCFC-free specification requirements. It also meets acceptance criteria for individual VOCs of concern and formaldehyde for school classrooms, private offices, and single family residences. Polyiso is one of North America’s most widely-used insulation products and has been cited by the EPA for its responsible impact on the environment.

CI Max foam sheathing is designed for easy installation where high thermal efficiency is required within both new and retrofit interior construction. It is an excellent interior insulation solution for both residential and Types I–V commercial construction including: masonry or framed walls or ceilings; pre-engineered metal buildings; industrial, agricultural, farm, storage, and parking structures; below-grade basement walls or ceilings; crawlspace walls or ceilings. Follow local building codes for application without a thermal barrier.

CI Max foam sheathing is nonstructural. The walls must be braced in accordance with the requirements of the applicable code. This product is not marketed as a rodent or insect deterrent.