Introduction
FS-IB Ignition Barrier Coating is a single-component, water-based latex treatment 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 in both residential and commercial structures. This ignition barrier coating 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. 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. Flame Seal IB is available in Standard White, Platinum Gray, or Black.
FS-IB Documents
Data Sheet
SDS Application Guide
Evaluation Report ER-600
Thermal Barriers & Ignition Barriers-SPFA 126
Testing Matrix
Tested in accordance with the Modified NFPA 286 AC 377 Appendix X.
Updated (10-19-2020)
Foam Brand | Type | Wet Mils | Sqft/gal | SPF Listing |
Acme WC50 | OC | 6 | 300 | ER-605 |
AccuFoam OC | OC | 6 | 300 | ER-554 |
Ambit AXI OC 4.1 | OC | 5 | 350 | TBD |
AmbiSeal 5.0 | OC | 5 | 350 | TBD |
BASF ENERTITE G | OC | 7 | 250 | ESR-3102 |
BASF ENERTITE NM | OC | 7 | 250 | ESR-3102 |
BASF SPRAYTITE 158 | CC | 8 | 200 | ESR-2642 |
BASF SPRAYTITE Comfort | CC | 8 | 200 | ESR-2642 |
BASF SPRAYTITE Comfort Plus | CC | 8 | 200 | ESR-2642 |
BASF SPRAYTITE LWP-L | CC | 8 | 200 | ESR-2642 |
BASF SPRAYTITE SP | CC | 8 | 200 | ESR-2642 |
Carlisle Foamsulate 50 | OC | 4 | 400 | ER-321 |
Carlisle Foamsulate HY | OC | 4 | 400 | ER-540 |
Carlisle Sealtite Pro | OC | 4 | 400 | ER-624 |
Carlisle Sealtite HY | OC | 4 | 400 | ER-623 |
Carlisle Sealtite NM | OC | 4 | 400 | ER-616 |
Creative Polymers Airlok.45 | OC | 6 | 300 | ER-554 |
Demilec Sealection | OC | 6 | 300 | ESR-1172 |
EnergyOne EOA500 | OC | 4 | 400 | ESR-3686 |
Icynene Classic | OC | 6 | 300 | ESR-1826 |
Icynene Ultra | OC | 6 | 300 | ESR-1826 |
Icynene Ultra Select | OC | 6 | 300 | ESR-1826 |
Lapolla FL 450 | OC | 6 | 300 | ESR-4242 |
Lapolla FL 500 | OC | 6 | 300 | ESR-1148 |
PCC Prodex | OC | 5 | 350 | ESR-4003 |
Polygreen Solutions | OC | 6 | 300 | ER-606 |
Sustainable Polymers OC.5 | OC | 4 | 300 | ER-513 |
SWD QS106 | OC | 6 | 300 | CCRR-1011 |
SWD QS108 | OC | 6 | 300 | CCRR-1051 |
SWD QS108YM | OC | 6 | 300 | CCRR-1051 |
Victory OneStroke | OC | 6 | 300 | ER-599 |
Victory VPC-50 | OC | 4 | 400 | ER-674 |
XtremeSeal 0.5 | OC | 4 | 400 | ER-538 |
Application
The standard recommended application method for FS-IB Ignition Barrier Coating is an airless spray equipment. Small jobs or touchups may be performed by roller, or brush. FS-IB must be applied to surfaces free of dirt, grease, loose particles, and any foreign matter. Thorough mixing is required prior to application. Coverage rates may vary depending on SPF density, brand, and testing results. Please seek proper application coverage specs from either the SPF manufacture or a Flame Seal Testing Matrix.

Recommended Equipment
Dynamic At The Gun Tip Size
3000 PSI | 2000 PSI | .025-.033 |
Airless Sprayers
Graco | Ultra Max II 795/1095 |
Titan | Impact 840/1140 |