L H Dottie Co MC150 Fire Stop Caulking Compound

Product Description

The L H DOTTIE CO MC150 is a red fire stop caulking compound designed to seal penetrations in fire-rated assemblies. It is applied around pipes, conduit, cables, and other pass-through penetrations in walls, floors, and ceilings where a fire-rated barrier must be maintained. The red color provides visual confirmation of application and helps inspectors verify coverage. Licensed electricians, plumbers, and fire-stop specialty contractors typically install this product as part of code-required passive fire protection systems.

This compound is suited for commercial and residential construction and renovation projects where building codes require fire-rated penetration seals. It is commonly used in multi-unit residential buildings, commercial tenant improvements, and any structure subject to IBC or local fire code requirements for compartmentalization. Each unit is sold individually and applied by hand or caulking gun to fill annular spaces around penetrating items.

Key Features

• Red color provides visible indication of applied fire stop material for inspection purposes
• Formulated to seal penetrations in fire-rated wall and floor assemblies
• Suitable for use around pipes, conduit, and cable pass-throughs
• Sold as a single unit for flexible quantity purchasing

Compatibility

Designed as an OEM-style fire stop caulking compound for use in fire-rated penetration applications in commercial and residential construction assemblies.

Installation Notes

Installation of fire stop materials should be performed by a qualified contractor familiar with passive fire protection requirements under the applicable building and fire codes. Clean and dry the penetration area before applying the compound, and follow the manufacturer datasheet for minimum fill depth and curing time. Do not cover or close the assembly until the compound has fully cured and the installation has been inspected if required by the authority having jurisdiction.