Firestop mortar, starts as a powder, is mixed with water, forms cement stone, dries hard, is often leavened with lightweight aggregates, such as perlite or vermiculite and pigmented to distinguish it from generic materials in an effort to prevent unlawful substitution and to enable verification of bounding.

Firestopped cable tray penetration. The cables and the tray are penetrants.

Cable tray cross barrier firestop test, full scale wall, in Germany as per DIN4102.

Firestop mortars are most typically used to firestop large openings in walls and floors required to have a fire-resistance rating. They are passive fire protection items subject to stringent bounding. Firestop mortars most often exhibit densities near 1kg/L. This makes the product easy enough to handle, yet heavy enough to absorb a lot of heat from penetrants, to keep the unexposed side of the assembly cool. A firestop is a passive fire protection system of various components used to seal openings in fire-resistance rated wall and/or floor assemblies through bounding. ... Mortar has several meanings: A mortar is a military weapon into which is dropped a mortar shell, which is then fired in a high ballistic trajectory. ... Powder is a substance that has been crushed into very fine grains. ... Impact of a drop of water. ... Expanded Perlite Perlite is an amorphous volcanic glass that has a relatively high water content. ... Vermiculite is a natural mineral which expands with the application of heat. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A firestop is a passive fire protection system of various components used to seal openings in fire-resistance rated wall and/or floor assemblies through bounding. ... A penetrant is the cause for a service penetration firestop. ... A firestop is a passive fire protection system of various components used to seal openings in fire-resistance rated wall and/or floor assemblies through bounding. ... International time/temperature curves used to run commercial furnaces for testing the Fire-resistance rating of passive fire protection systems, such as firestops, fire doors, wall and floor assemblies, etc. ... Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent [1] cable coating. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... In physics, heat, symbolized by Q, is defined as energy in transit. ... A penetrant is the cause for a service penetration firestop. ...

Firestop mortars differ in formula and properties from most other cementitious substances and cannot be substituted with generic mortars without violating bounding requirements.

See also

• Mortar
• Perlite
• Vermiculite
• Cement
• Firestop
• Passive fire protection
• Bounding
• Penetrant
• Fire-resistance rating

Mortar has several meanings: A mortar is a military weapon into which is dropped a mortar shell, which is then fired in a high ballistic trajectory. ... Expanded Perlite Perlite is an amorphous volcanic glass that has a relatively high water content. ... Vermiculite is a natural mineral which expands with the application of heat. ... Cement is a material used for bonding other materials together, and as a binder in concrete. ... A firestop is a passive fire protection system of various components used to seal openings in fire-resistance rated wall and/or floor assemblies through bounding. ... Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent [1] cable coating. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A penetrant is the cause for a service penetration firestop. ... International time/temperature curves used to run commercial furnaces for testing the Fire-resistance rating of passive fire protection systems, such as firestops, fire doors, wall and floor assemblies, etc. ...

External links

• Article on firestop mortars