CertainTeed's FlintBoard® ISO Cold is a high-performing insulation board for low-slope roofing applications, engineered with a more durable facer and higher dimensional stability than standard FlintBoard® ISO for use with roofing systems that utilize cold applied adhesive as the membrane bonding agent. FlintBoard® ISO Cold also achieves UL Class A fire rating on combustible deck assemblies without the use of a fire rated slip sheet or gypsum cover board when applied at a thickness of 1" or greater. FlintBoard® roof insulation slows the flow of heat into and out of the building through the roof deck, reducing energy costs for building owners as well as thermal strain to the roof system. Composed of a closed-cell polyisocyanurate foam core, FlintBoard® offers the highest R-value (resistance to heat flow) per inch available and long-term thermal resistance values (LTTR*) from 5.7 to 27, LTTR. FlintBoard® ISO Cold is available in multiple thicknesses ranging from 1" to 4...See More.5", in 4' x 4' or 4'x 8' panels, and can be installed in multiple layers, meeting any R-value project specifications. FlintBoard® ISO Cold is faced on top and bottom surfaces with a coated glass facer, compatible with several insulation adhesives. The facer is white on one side of the board and dark on the other side, allowing the installer to choose which side to install up to control flash-off times in fully adhered applications. FlintBoard® ISO Cold may also be mechanically attached. The product is designed to be easy to install, with a lightweight, rigid construction that makes it simple to handle and position on the roof. FlintBoard® ISO Cold is primarily manufactured with a 20-psi formulate and is also available in 25-psi. This versatile insulation product is engineered for use with built-up and modified asphalt roof systems, single-ply systems and coal tar. Reach out to your local CertainTeed Territory Manager to request a sample and demonstration of FlintBoard® ISO Cold. *LTTR is the industry standard method for calculating the 15-year time-weighted average for roof insulation. See Less