White Lightning W44017010 Fire Stop Caulk 10 Oz Red

Product Description

The WHITE LIGHTNING W44017010 is a red acrylic latex fire stop caulk formulated for sealing penetrations and gaps where fire resistance is required. Dispensed from a standard 10 oz cartridge, it applies with any conventional caulk gun and is rated to ASTM E-136 for fire stopping performance. The acrylic latex base allows the cured bead to be painted over once set. With a minimum application temperature of 40 degrees F, it suits most indoor job-site conditions and can be used on metal and wood substrates. Licensed contractors and building inspectors frequently specify compliant fire stop sealants for code-required assemblies in commercial and residential construction.

This caulk is intended for indoor use in fire stopping applications where penetrations through rated wall or floor assemblies must be sealed. It adheres to metal and wood, making it suitable for sealing around conduit, pipe, and framing penetrations in fire-rated partitions. The paintable formula allows finish coats to be applied after the sealant has cured, keeping the assembly compliant and visually consistent with the surrounding surface.

Key Features

• ASTM E-136 rated for fire stopping performance in rated assemblies
• Acrylic latex formula is paintable after curing
• Adheres to metal and wood substrates
• Red color provides visual identification of fire stop installations
• Minimum application temperature of 40 degrees F for broad indoor usability
• Standard 10 oz cartridge compatible with conventional caulk guns

Compatibility

Designed for indoor fire stopping applications on metal and wood substrates in residential and commercial rated wall and floor assemblies.

Installation Notes

Installation of fire stop sealants in rated assemblies is typically performed by licensed contractors and must comply with applicable building codes and the requirements of the rated assembly design. Power down or de-energize any electrical systems in the work area before sealing penetrations around conduit or wiring. Clean and dry all substrate surfaces before applying the sealant to ensure proper adhesion. Allow the caulk to fully cure before applying paint or closing the assembly.