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.

Online Store

IB Documents

Data Sheet


Application Guide

Testing Matrix


All foams are tested to the AC 377 Standard.

Foam Brands                                                                             Foam Types    Wet Mills     Coverage Rate (Per Gal)

Accella BaysealOpen Cell8200 sq.ft.
Acme Urethanes WC-50Open Cell6300 sq.ft.
BASF EnertiteOpen Cell7250 sq.ft.
Creative Polymers Airlok 45Open Cell6300 sq.ft.
Demilec Sealection 500Open Cell6300 sq.ft.
Lapolla FL500 Open Cell6300 sq.ft.
PCC ProdexOpen Cell5350 sq ft.
Polygreen Solutions Green Seal 44Open Cell6300 sq.ft.
SES 0.5Open Cell4400 sq.ft.
SWD Quik Shield 106Open Cell6300 sq.ft.
SWD Quik Shield 108Open Cell6300 sq.ft.
Victory Polymers VPC OnestrokeOpen Cell6300 sq.ft.


Recommended Equipment

Dynamic              At The Gun          Tip Size

3000 PSI

2000 PSI


Airless Sprayers


Ultra Max II 795/1095


Impact 840/1140



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