Product manufacturer

HILTI

Product Category

Firestop and Smoke Seals

HILTI Firestop and Smoke Seals Firestop Joint Spray CFS-SP WB

A firestop smoke seal is a passive fire protection material used to block the passage of flames, smoke, and gases through openings and gaps in fire-rated walls, floors, and doors

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Complete Technical Specifications for HILTI Firestop Joint Spray CFS-SP WB

PropertyValueUnit
Product NameFirestop Joint Spray CFS-SP WB
product descriptionA sprayable fire-rated mastic for construction joints where maximum movement is required.
Product FeaturesSprayable or applied by brush, Maximum flexibility, meets 500 cycle requirements (Class II and III Approval) (ASTM E 1966 and UL 2079), Compatible with Graco Ultra Max II 595 or 695 sprayers for faster installation, Contains no halogens, solvents, or asbestos, Water-based formulation — easy cleanup, High elasticity — movement capability up to 50%, Excellent sprayability and low slump, California State Fire Marshal approval for joints
Installation InstructionsRefer to Hilti literature or third-party listings for complete installation details.
Density10.8lb/gal
ColourRed, white, gray
Packaging5-gallon
Storage Temperature35°F to 95°F°C
Shelf Life12 months
Application Temperature39°F to 104°F
Temperature Resistance40°F to 176°F
ConsistencySprayable liquid
Chemical BasisAcrylic water-based dispersion
Tack-Free Time3 hrs @ 73°F, 50% RH%
Curing Time24 hrs @ 73°F, 50% RH for ¼"depth
Volume Shrinkage51.1%
Water TightnessYes
pH Valu8–9
Movement CapabilityUp to 50%
PaintableYes
Seismic ResistantYes
Mold & Mildew (ASTM G21-90)0 — No growth
Air Leakage (UL 2079 L-Rating)Ambient: <1 CFM/Lin Ft, 400°F: <1 CFM/Lin Ft
Surface Burning (ASTM E84)Flame Spread: 5, Smoke Developed: 0
Surface Burning (CAN/ULC-S102)Flame Spread: 5, Smoke Developed:1 0
STC Rating (ASTM E90-89)59
Tested In Accordance WithUL 2079, ASTM E1966, ASTM E84, ASTM E2837, UL 1479, ASTM E814, ASTM E2037, ASTM E1999, ASTM E1354, CAN/ULC-S115

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