STI is the global leader in developing perimeter fire barrier systems for sealing the void area between a fire-rated floor and non-rated exterior wall.
Perimeter fire barrier systems are tested according to ASTM E2307, "Standard Test Method for Determining Fire Resistance of Perimeter Fire Barriers Using Intermediate-Scale, Multi-Story Test Apparatus (ISMA)". Perimeter fire barriers consist of the assemblage of materials installed into the void area between a fire-rated floor and non-fire-rated exterior wall or curtain wall.
Building codes, such as the IBC, require such systems to be tested according to ASTM E2307.
The ISMA structure is a two-story furnace that subjects a perimeter fire barrier system to fire exposure from two sides simultaneously. It is intended to simulate a building fire where a fire induced window break occurs and the flame plume escapes to impinge directly on the exterior of the curtain wall.
UL is the undisputed authority for curtain wall perimeter fire barrier testing. With more than 100 years of experience testing for fire resistance, UL offers easy code acceptance by AHJs, building owners, and architects.
STI is the leader in offering UL Certified solutions for perimeter fire barriers. With 106 individual tested and UL Certified solutions for a multitude of different façade types, STI has more testing than all other listed manufacturers combined at UL.
STI offers the most comprehensive and complete testing package. Façade types include:
STI manufactures two grades of elastomeric firestop coatings:
SpecSeal® AS200 Elastomeric Spray is a non-halogenated latex-based, highly elastomeric coating designed to provide passive smoke and fire protection in construction joints.
SpecSeal® Series FT Fast Tack Firestop Spray, an advanced hybrid polymer coating designed for use in inclement weather such as impending rain showers or cold weather.
In the absence of a clear test standard, STI worked in conjunction with UL to devise a methodology to evaluate curtain wall connection protection. The investigation included a series of fire tests to evaluate the connection protection concept and compare it to traditional fire protection materials, including spray-applied fire-resistive materials (SFRM), which resulted in the establishment of the XHDI category for “Accessories for Perimeter Fire Systems” and the publication of specific systems within the XHDG category, that include STI’s connection protection systems. For more information on Connection Protection click here.
SpecSeal® AS200 Elastomeric Spray is a latex-based elastomeric firestop spray for construction joints and perimeter fire barrier applications. AS200 cures to form a durable seal that resists the passage of the products of combustion while accommodating for high dynamic joint movement.
FastTack® Firestop Spray is the ultimate in weather resistant firestop sprays. FastTack®’s hybrid copolymer formula was developed to counter the stalling effects of weather while providing unmatched washout resistance and the industry’s fastest tack free times. FastTack® outperforms and outlasts all competing firestop coatings providing the most versatile protection on the market.
SpecSeal® Connection Protection is the go to solution for protecting underside mounted mullion brackets in curtain wall construction. Custom sized to your style of bracket, Connection Protection installs quickly with common job site tools. SpecSeal® Connection Protection is the only proven method for protecting exposed mullion mounting brackets, ensuring their integrity and performance under fire exposure.
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Did you know that many specifications for firestopping reference older fire test standards or obsolete products?
Let our firestop experts assist by reviewing your firestop specifications and making appropriate recommendations. STI provides this service free of charge.