Firestop Intumescent Sealant

BOSS® 816 Intumescent Firestop Sealant 

FEATURES 

• Bonds quickly with excellent adhesion
• Mildew Resistant
• Remains flexible
• VOC compliant
• Excellent freeze/thaw properties
• Safe to use and handle
• Water based and paintable
• 12 month shelf life 

BOSS® 816 UL Classified Intumescent Firestop Sealant is a fire rated, general purpose sealant for use on through-penetrations and construction joints. It is a single component, non-sag, water based sealant and smoke seal  that is easy to apply and clean up. BOSS® 816 will prevent the spread of toxic gases, water, smoke and fire through joint openings and through penetrations. BOSS® 816 is suitable for adhesion to almost any surface and remains flexible, making it ideal for both horizontal and vertical joints, subject to vibration or dynamic movement. It bonds quickly, has excellent adhesion and is non-toxic. BOSS® 816 is protected against mold growth with a combination of biocides in both wet and dry stages. It has been tested to the following specifications: UL 1479 (ASTM E-814), UL 2079 (ASTM E-1966), ASTM E-84 (0-flame, 0-smoke), ASTM E-90 (STC 53)