CertainTeed FlintBoard® CV Polyisocyanurate Roof Insulation is a rigid board insulation specifically for use over sloped unventilated roof decks. FlintBoard CV is designed to provide thermally efficient insulation with uniform cross venting that promotes the air circulation required by many shingle manufacturers. FlintBoard CV allows heat to dissipate while providing a nailable surface and efficient insulation in a one-step process.

Technical Information

FlintBoard CV is offered in a variety of thicknesses, and consists of a thermally efficient polyiso insulation board with 1.0", 1.5" or 2.0" ventilation channels separating APA/TECO rated OSB or plywood from the polyiso foam insulation to create a cross ventilating airspace. Flint board CV is made to order in 4' x 8' (1220mm x 2440mm) size panels and in nominal thicknesses of 2.5" to 6.0". Non-standard vent spaces are available on special order.

For additional technical resources please refer to the CertainTeed Commercial Roof Systems Manual.


Before installation begins, the roof deck must be firm, well attached, even, clean and dry.

Do not leave exposed. FlintBoard Crickets is a polyiso organic plastic foam and will burn if exposed to an ignition source of sufficient heat and intensity, or open flame, such as a welder's torch. Do not apply flame directly to FlintBoard roof insulations.

For detailed installation instructions please refer to the CertainTeed Commercial Roof Systems Manual.

For Construction Details and Specs Click Here

Warranty Details

CertainTeed offers three asphaltic low-slope roof system warranty options: Limited Warranty on Materials, Integrity Roof System Limited Warranty, and Integrity Roof System No Dollar Limit (NDL) Limited Warranty. CertainTeed warranty durations are based on a combination of system specification and product selection. Please download an overview of these warranty options for details. Consult with your contractor or CertainTeed Territory Manager to determine which warranty is best for your project.     

CertainTeed offers standard asphaltic low-slope roof system warranty durations between ten and twenty-five years. Additionally, Gold Star Contractors can increase warranty durations by 25% by engaging in an Integrity Maintenance Agreement with their client.

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