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.

How to Buy?

Buy Now!

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.

For the application instructions please visit https://flameseal.com/training/

Recommended Equipment

Dynamic              At The Gun          Tip Size

3000 PSI

2000 PSI


Airless Sprayers


Ultra Max II 795/1095


Impact 840/1140


When To Spray An Ignition Barrier?

If a home has spray foam insulation in an attic or crawl space, the building code requires using materials or assemblies that offer some fire resistance but not as much as is required for a thermal barrier. If you have spray foam insulation in an attic, for example, it’s probably already separated from the living space by a thermal barrier. Most ceilings are made of 1/2″ drywall. But the spray foam is still exposed to the attic and needs an ignition barrier.


Back to top

$(.header-leather-concentrate).backstretch([ "http://dl.dropbox.com/u/515046/www/outside.jpg" , "http://dl.dropbox.com/u/515046/www/garfield-interior.jpg" , "http://dl.dropbox.com/u/515046/www/cheers.jpg" ], {duration: 3000, fade: 750});