CertainTeed FlintBoard® ISO F is a rigid board insulation specifically for single ply roofing systems.

FlintBoard ISO F Polyisocyanurate Roof Insulation features a closed-cell polyiso core bonded on each side to trilaminate foil facers. FlintBoard ISO F is approved for ballasted and mechanically attached single ply.

Technical Information

FlintBoard ISO F is offered in a variety of thicknesses, providing long-term thermal resistance (LTTR) values from 6.7 to 24.6. FlintBoard ISO F is also available in 25-psi formula. Available in 4' x 4' (1220mm x 1220mm) and 4' x 8' (1220mm x 2440mm) panels.

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.

For detailed installation instructions please refer to the CertainTeed FlintBoard product brochure and to the CertainTeed Commercial Roof Systems Manual. Refer also to Technical Bulletin CT-ISO-08-02.

Warranty Details

Please refer to the document provided for all warranty information.

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