FS IBTM (Ignition Barrier)


FS-IB™ Ignition Barrier is a single component, water-based latex coating for use as an ignition barrier over interior Spray Polyurethane Foam (SPF) insulation. FS-IB™ uses intumescent technology to protect SPF from flame source impingement. FS-IB™ is designed specifically as a protective coating over spray foam insulation in non-occupied areas, such as crawl spaces and uninhabited attics in both residential and commercial structures. The product has been tested successfully under the AC 377, Appendix X test method. FS-IB™ is fast drying and easy to use with standard commercial airless spray equipment Where spray foam system is installed within attics or crawl spaces where entry is made only for service of utilities, an ignition barrier must be installed in accordance with IBC Section 2603.4.1.6 and IRC Section R314.5.4, as applicable. The ignition barrier must be installed in a manner so that the foam plastic insulation is not exposed.

IB Documents

Data Sheet


Application Guide

Thermal Barriers & Ignition Barriers-SPFA 126

Testing Matrix


All foams are tested to the AC 377 Appendix X Standard

Foam BrandTypeWet MilsSqft/galSPF Listing
Acme WC50OC6300ER-605
AccuFoam OCOC6300ER-554
Ambit AXI OC 4.1OC5350TBD
BASF EnertiteOC7250ER-3102
Carlisle Sealtite ProOC4400ER-624
Carlisle Sealtite HYOC4400ER-623
Carlisle Sealtite NMOC4400ER-616
Creative PolymersOC6300ER-554
Demilec SealectionOC6300ESR-1172
Icynene ClassicOC6300ESR-1826
Icynene UltraOC6300ESR-1826
Icynene Ultra SelectOC6300ESR-1826
Lapolla FL 450OC6300ESR-4242
Lapolla FL 500OC6300ESR-1148
PCC ProdexOC5350ESR-4003
Polygreen SolutionsOC6300ER-606
SES EasySealOC4400ER-492
SWD QS106OC6300CCRR-1011
SWD QS108OC6300CCRR-1051
SWD QS108YMOC6300CCRR-1051
Victory OneStrokeOC6300ER-599
XtremeSeal 0.5 OC4400ER-538

Recommended Equipment

Dynamic              At The Gun          Tip Size

3000 PSI2000 PSI.025-.033

Airless Sprayers

GracoUltra Max II 795/1095
TitanImpact 840/1140
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