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Fire Rated 4-Hour Mortar Firestop UL1479 ASTM-E-814
FlameShieldä fire rated mortar firestop is easy to mix and use, and is ideal for irregular holes and defects.
This is a lightweight mortar compound that is designed to prevent the spread of fire from one compartment to another where services penetrate fire rated walls and floors.
FlameShield Mortar consists of a specially blended powder, supplied in easy to handle bags. When mixed with water, it forms a trowable or pourable mixture that is easy to install.
When exposed to the heat of a fire, the excellent thermal insulation properties provides an effective barrier, preventing the passage of fire and smoke. Unlike sand and cement mortars or concrete, the special formulation resists shrinkage, cracking, and does not spall.
During the curing process, this mortar slightly expands ensuring that an excellent seal is made even in irregular openings.