Specified Technologies WF305 Intumescent Firestop Caulk, 5 gal Pail

Protect mission-critical systems and building occupants with Specified Technologies WF305 Intumescent Firestop Caulk — a contractor-grade firestop caulk engineered for wood-frame construction and cable penetrations. This latex-based firestop caulk expands up to four times its original volume when exposed to heat, sealing openings around combustible and non-combustible penetrants to preserve compartmentation and reduce smoke and flame spread. Tested to ASTM E814/UL1479 for up to 3 hours, WF305 helps you meet code requirements and maintain the continuity of security, surveillance and monitoring systems during a fire event. The red, water-cleanable formula applies smoothly with standard caulking guns and comes in a 5 gal pail to speed large installations and minimize reloading. Environmentally friendly and installer-focused, WF305 keeps projects on schedule while providing durable, long-term protection for cable and conduit penetrations in walls and floor-ceiling assemblies. Specify Specified Technologies WF305 for reliable, code-compliant firestop solutions — ideal for CCTV, access control, network cabling and other low-voltage penetrations; order a pail for your next installation.

• Provides reliable fire containment to protect critical infrastructure such as security, surveillance and monitoring cabling
• Intumescent formula expands up to four times to seal gaps and maintain firestop integrity under heat
• Tested for up to 3 hours per ASTM E814/UL1479 to help meet code and inspection requirements
• Latex-based, environmentally friendly formulation that’s easy to tool and cleans up with water
• Supplied in a contractor-friendly 5 gal pail for rapid application and reduced jobsite downtime